About Symbiotic

At Symbiotic, we are building a permissionless shared security primitive that empowers network builders to shape and personalise their unique restaking implementation. Our goal is to minimise risks while maximising freedom for all you wonderful builders of crypto infrastructure networks. We have a robust developer-centric proposition and we can’t wait to share it with everyone.

You can find more information about what we’re building and how we’re doing it in our docs.

Our People

We’re a tight-knit team of experienced individuals at the forefront of crypto infrastructure. Our backgrounds range from security auditing and smart contract development to node operation, and we’re supported by Paradigm and CyberFund.

We’re on the hunt for talented professionals to join our mission and strengthen our awesome team.

The Role

We are currently searching for a Senior Golang Engineer who will play a pivotal role in development of the off-chain part of the project.

What you’ll do

• Participate in all phases of backend development, including requirements analysis, software design, implementation, documentation, and unit testing.
• Communicate effectively with the team and company partners.
• Integrate new features into the existing codebase.
• Contribute to the estimation, planning, and execution of projects, features, and integrations.
• Review code written by other team members.

Who you are

• Experienced in building web applications with Golang and using Goroutines for concurrency
• Comfortable working with PostgreSQL via the pq library
• Skilled in both relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) databases
• Able to design and optimize scalable database schemas
• Proficient with Docker and familiar with GitHub CI/CD and basic Kubernetes
• Confident using Git for version control (branching, merging, pull requests)
• Writes solid unit and integration tests using Go or similar frameworks
• Understands and applies web security best practices
• Organized and collaborative, with experience using tools like ClickUp for project Management

About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. 

Our Engineering team built the world’s largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy.

We are looking for an experienced Software Engineer to join our Cloud Browser Isolation/ Data Path Team. Reporting to the Senior Manager, Software Development Engineering, based in Madrid, you will be working remotely and you'll be responsible for:

Owning the definition, design, implementation, testing, delivery, monitoring, and reliability of multiple core components to ensure optimal browser streaming experiences for customers. Collaborating with stakeholders to analyze requirements and develop scalable, secure, and extensible technical solutions for cloud applications. Writing high-quality, testable, maintainable, and secure code, while integrating appropriate tests into CI/CD pipelines for reliable deployments. Fostering team growth through mentoring and knowledge sharing, maintaining a focus on continuous learning and improvement. Taking full ownership of deployed services, including on-call responsibilities, to ensure reliability and minimize production incidents.

What We Are Looking For (Minimum Qualifications):

6+ years of professional experience in software engineering, with at least 3 years dedicated to developing applications for Linux and cloud-based, high-traffic systems. Strong coding skills in C++. API & HTTP Knowledge: In-depth knowledge of RESTful APIs with a solid understanding of the HTTP protocol and request/response lifecycle. Familiarity with technologies such as gRPC or WebSockets. Strong grasp of system design principles, programming fundamentals, and experience with microservice-based and distributed architectures.

What Will Make You Stand Out (Preferred Qualifications):

Proficiency in computer graphics libraries (e.g., OpenGL, Vulkan), GPU driver development, Chromium rendering, browser engines, and modern web technologies such as WebAudio, WebGL, or WebAssembly. Expertise in media streaming technologies, low-level networking protocols (TCP, UDP), containerization tools (Docker, Kubernetes), and strong coding skills in Rust. Familiarity with automation tools for code quality, testing, and CI/CD pipelines to optimize development and deployment processes.

LI-MM8#LI-REMOTEAt Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. Our Engineering team built the world’s largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy. We are looking for an experienced Manager, Software Development Engineering skilled in the DevOps space. You would be reporting to the Director of Software Engineering and your responsibilities will include:

Leading the DevSecOps team, you will oversee operations for multiple development teams, hands-on responsibilities and guiding a team of engineers by distributing tasks, tracking progress, and facilitating their success   Spearheading the development of internal product tools using AI/ML, MLOps and Code LLM functionalities Owning the end-to-end process for Open-Source License Governance and Vulnerability assessment in software applications developed by several other teams, using tools like Blackduck or Snyk integrated in the CI pipelines Managing the Infrastructure: Responsible for administration & maintenance of source control management systems, such as GitLab, GitHub, BitBucket  Nexus, CI/CD systems, Artefact management repositories, test beds etc Integrating SAST, DAST or IaC, tools into the CI / CD pipelines

What We're Looking for (Minimum Qualifications)

Bachelor's Degree in Engineering, CS, MIS, or related field along with 8+ years of hands-on experience in app development, build & release management and setting up CI/CD pipelines 2 years of Team Lead experience managing various tools required in the software lifecycle, Scripting in shell, Python, Groovy or Programming knowledge on Java / C /C++ with Unix / Linux systems expertise  Experience in domains like Application Security, API Security, DevSecOps , Devops and AI/ML is preferred Excellent leadership skills with a track record of managing high-performing teams with strong presentation and communication skills Good understanding of the principles and best practices of Software Configuration Management (SCM) in Agile, scrum, and Waterfall methodologies

What Will Make You Stand Out (Preferred Qualifications)

Experience writing and developing yaml based CI/CD Pipelines using GitLab, GitHub and knowledge of build tools like makefiles/gradle/npm/maven etc Experience with Networking, Load Balancers, Firewalls, Web Security Experience with AI and ML tools in day to day DevSecOps activities

LI-AC10#LI-HybridAt Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. 

Our Engineering team built the world’s largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy.

We are looking for an experienced Software Engineer to join our Cloud Browser Isolation Product Team. Reporting to the Senior Manager, Software Development Engineering, based in Madrid, you will be working remotely and you'll be responsible for:

Owning the definition, design, implementation, testing, delivery, monitoring, and reliability of multiple core components to ensure optimal browser streaming experiences for customers. Collaborating with stakeholders to analyze requirements and develop scalable, secure, and extensible technical solutions for cloud applications. Writing high-quality, testable, maintainable, and secure code, while integrating appropriate tests into CI/CD pipelines for reliable deployments. Fostering team growth through mentoring and knowledge sharing, maintaining a focus on continuous learning and improvement. Taking full ownership of deployed services, including on-call responsibilities, to ensure reliability and minimize production incidents.

What We Are Looking For (Minimum Qualifications):

6+ years of professional experience in developing applications for Linux and high-traffic cloud-based systems, with advanced expertise in C++. Proven experience in implementing and maintaining features in Chromium, including contributions at various layers such as content, browser, core, compositor, and networking. Strong understanding of modern web programming concepts and languages, such as JavaScript, TypeScript, or similar technologies. Familiarity with networking technologies like gRPC and WebSockets, with hands-on implementation expertise in robust communication architectures. Extensive experience with software quality automation tools, testing frameworks, and CI/CD pipelines to streamline development and deployment processes.

What Will Make You Stand Out (Preferred Qualifications):

Expertise in protocols such as HTTP/HTTP3, UDP  or other, with a strong understanding of their unique challenges. Proficiency in modern build tools and compilers, including LLVM, Emscripten toolchains, GN, and Bazel, along with experience in cloud platforms and monitoring tools like AWS, Kubernetes, Kibana, Grafana, or Mimir. Bonus: Active contributor to the Chromium open-source project or similar large-scale open-source initiatives.

LI-MM8

LI-REMOTEAt Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. Our Engineering team built the world's largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy. We're looking for an experienced Staff Software Engineer to join our End point protection team. Reporting to the Engineering Manager; QA, you'll be responsible for:

Contributing for developing automated function test cases , building test infrastructure for the product needs and mentoring the juniors Developing and maintaining the automation framework. Use in-house and modern tools to enable automation of network security products, scheduling of runs, etc Implementing continuous integration and continuous deployment (CI/CD) pipelines to ensure smooth and efficient automation runs

What We're Looking for (Minimum Qualifications)

6+ years of relevant experience in test automation in a networking and security environment Extensive hands-on experience designing / developing automation frameworks using python Experience in AWS, GCP, Active Directory, VPNs clients Proficient in Network and Security protocols like TCP/IP, IPv4/IPv6, HTTP/HTTPS, SSL/TLS Troubleshooting and analysing the logs using Wireshark/TCP dump

What Will Make You Stand Out (Preferred Qualifications)

System Load and Performance testing knowledge Experience setting testbeds in a Virtualization environment Certification in any of the cloud domain, networking domain and automation domain is a plus

LI-GL2

LI-HybridAt Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

Join the Future of Crypto Investing!

Are you passionate about blockchain, cryptocurrencies, and building revolutionary platforms? CRYLO® is a cutting-edge FinTech startup revolutionizing DeFi with Artificial Intelligence (AI) and Machine Learning (ML) algorithms. We are building a platform that simplifies crypto investing for the masses, from market analysis, to personalized crypto portfolio creation, and fully automated trading.

Join this ambitious team as our Lead Blockchain Developer to shape the future of decentralized finance!You’ll work closely with the CTO, Quant and fontend developers to create an intuitive experience for investors entering the DeFi space.

This is your chance to be part of a startup that’s transforming decentralized finance (DeFi) while working closely with an inspiring team. Join us and help develop the backend of our MVP for the world’s first AI-driven wealth management platform.

Tasks

• Collaborate with the CTO and the development team to design, build, and maintain CRYLO®.
• Integrate multiple APIs, import large data, and build interfaces on the backend.
• Develop, deploy, optimize and manage proxy-server systems, blockchain-based solutions (trading, lending, staking, a.o.), including smart contracts writing, AI and ML algorithms integrations for our backend and use CICD.
• Write clean, efficient, and maintainable code (mainly Phyton), following best practice in blockchain and cloud computing.
• Deliver solutions for the orchestration tasks.
• Create and maintain scalable, secure, high-performing, and high-frequency cloud-based infrastructure.
• Troubleshoot and resolve issues in a fast-paced startup environment.
• Actively contribute to product/tokenization discussions and bring innovative ideas to the table.

Requirements

• A Bachelor’s, Master’s or PHD degree, in computer science from a top university.
• Minimum of 5 years proven expertise as a full-stack blockchain developer.
• Proven experience in blockchain technology and smart contract development in ERC20 standard.
• Experience in API development and large data imports.
• Expertise in Python (3.12) programming.
• Proven experience in docker containerization.
• Experience in SHELL programming.
• Hands-on experience with cloud computing platforms (AWS, Azure, Tencent, a.o.).
• Familiarity with decentralized finance (DeFi), cryptocurrencies, and Web3 ecosystems.
• Strong understanding of database systems (SQL and NoSQL).
• Experience with TypScript, Javascript and front-end frameworks (React).
• Experience with Git, CI/CD pipelines, and agile development methodologies.
• Ability to work in a remote, self-motivated environment and meet tight deadlines.
• Excellent communication skills in English and the ability to collaborate effectively with cross-functional teams.
• Previous experience in startups or entrepreneurial projects.
• Past contributions to DeFi projects, connected in the developer community.
• Experience in the creation and development of algorithms and bots.
• Knowledge of AI/ML algorithms and their application in financial services.
• Applied mathematics and theoretical mathematics.
• ICM/ICPC knowledge.

Benefits

• This is a unique opportunity to be part of a visionary and serious FinTech startup.
• The chance to work closely with industry experts from the very beginning, including the CEO, CPO and CTO, in a collaborative and friendly environment.
• An investment into your future: 1. Repayment for all work completed once we secure funding. 2. Thereafter, a full-time job contract with a competitive salary upon successful MVP delivery and funding. 3. Participation in our incentive program (phantom shares/ tokens) to grow together as the company scales.

If you’re ready to take your blockchain and backend development skills to the next level and be part of a groundbreaking project, we’d love to hear from you!

Please note that we only accept applications directly from individuals and not through staffing firms, and a complete application must include a resume and a list of links to your recent project references.

Apply Now:

Today, more than 20 industries are already being positively shaped by this next generation of apps built on the peaq network. This is an opportunity to join a team of performance-driven entrepreneurs, engineers, and creatives, on a mission to unlock the Age of Abundance.

We’re looking for a skilled and detail-oriented Full Stack Developer to join our tech team and help build products that meet the highest quality standards and contribute to an exceptional user experience.

Responsibilities

• Develop and maintain Web3 applications using Next.js (frontend) and Node.js (backend).

• Build decentralized applications (dApps) that integrate with smart contracts.

• Work with Ethereum, Polygon, and other blockchain networks to interact with smart contracts using Web3.js, Ethers.js, or Viem.

• Implement and integrate ERC-20, ERC-721 (NFTs), and ERC-1155 token standards.

• Optimize frontend and backend performance for scalability, security, and usability.

• Build robust APIs and services using RESTful APIs and GraphQL.

• Collaborate with blockchain engineers, designers, and product teams to create seamless user experiences.

• Write clean, modular, and well-documented code following SOLID principles and Web3 best practices.

• Stay updated with the latest trends in Web3, blockchain development, and smart contract integration.

Basic Qualifications & Requirements

• 3+ years of experience as a Full Stack Developer.

• Proven experience working with JavaScript & TypeScript.

• Some experience working with Next.js, React.js, and Node.js for full stack development.

• Hands-on experience with blockchain and Web3 development.

• Proficiency with Web3.js, Ethers.js, or Viem to interact with smart contracts.

• Understanding of Ethereum Virtual Machine (EVM), Solidity, and smart contract development.

• Experience working with ERC-20 tokens, NFTs (ERC-721, ERC-1155), and DeFi protocols.

• Backend experience with Express.js, Nest.js, or similar frameworks.

• Familiarity with IPFS, The Graph, Moralis, or Alchemy for blockchain data access.

• Strong understanding of security best practices in Web3 applications.

• Experience with databases such as PostgreSQL, MongoDB, or Firebase.

• Version control with Git/GitHub and CI/CD pipelines.

Preferred Skills & Experience

• Experience with Solidity and smart contract development.

• Familiarity with Layer 2 solutions (Arbitrum, Optimism, zkSync, etc.).

• Knowledge of DeFi, DAOs, or NFT marketplaces.

• Understanding of decentralized storage solutions (IPFS, Arweave, Filecoin).

• Experience working with Python for blockchain data processing.

• Cloud services expertise (AWS, GCP, Azure).

Benefits

• Remote first. You’ll be joining a team working from all over the world.

• Flexible working arrangements. Create your own journey with flexible working schedules and locations.

• The opportunity to build and contribute to high-impact projects in a new industry that will positively shape the lives of hundreds of millions of people.

• High growth potential. Room to grow professionally, while learning new skills and working at the cutting edge of the decentralized Machine Economy.

• A warm and open culture at an international organization with team members from all four corners of the globe.

• An environment that values autonomy, team spirit and open communication.

We look forward to building the future with you.

Apply Now:

About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. Our Engineering team built the world’s largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy. We're looking for an experienced Senior Software Development Engineer to join our Integration team. Reporting to the Manager, Software Engineering you'll be responsible for:

Contributing to the creation and maintenance of integrations between CBI and internal or external products and services, enhancing Zscaler’s offering beyond what a single solution can provide Understanding and contributing to the design and development of services enabling these integrations Being independent and flexible enough to learn and use the right tools for the right tasks Actively seeking to learn and participating in all phases of SDLC: development, testing, deployment, and operations Asking critical questions about presented ideas, and also bringing their own, while being open to constructive criticism regarding those ideas

What We're Looking for (Minimum Qualifications):

2+ years of experience with Go/ Rust/ C/ C++ working on creating and maintaining highly scalable application(s) Solid understanding of HTTP and RPC based protocols Ability to independently create and understand industry standard system design documents Ability to understand and contribute to design and development of services required to enhance CBI’s integrations Independent and flexible enough to learn and use the right tool for the right task

What Will Make You Stand Out (Preferred Qualifications):

Proficient in Node.js Independent to setup/create and maintain CI/CD pipelines

LI-MM8

LI-REMOTEAt Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

Who are we? FalconX is a pioneering team of operators, investors, and builders committed to revolutionizing institutional access to the crypto markets. Operating at the intersection of traditional finance and 
cutting-edge technology, FalconX addresses the industry's foremost challenges: Navigating the digital asset market can be complex and fragmented, with limited products and services that support trading strategies, structures, and liquidity found in conventional financial markets. As a comprehensive solution for all digital asset strategies from start to scale, FalconX operates as the connective tissue empowering clients with seamless navigation through the ever-
evolving cryptocurrency landscape.About The Role: We’re looking for a Senior Trading Systems Developer with strong experience in Java and Rust to architect and build our next-generation Order Management System (OMS) and electronic trading execution platform. This platform will be central to supporting complex electronic trading workflows, such as market making and internalizing flow spanning high- and low-touch desks. You’ll be designing and developing scalable, low-latency components that are resilient under heavy load and tightly integrated with our execution stack and internal trading infrastructure. What You’ll Do

Design and implement a high-performance OMS for institutional trading workflow and EMS for electronic trading strategies and internalization engines. Lead the development of core order lifecycle components: order entry, modification, routing, risk checks, and state management. Build scalable services using Java and Rust, optimized for latency and throughput. Collaborate with strategy developers, product managers, and infrastructure teams to deliver flexible and extensible trading systems. Ensure system resilience, observability, and recovery in distributed, high-availability environments. Integrate with external market venues and internal trading strategies using WebSocket, REST, and FIX APIs. Drive code quality, testability, and production readiness through CI/CD, monitoring, and alerting best practices.

What We’re Looking For

5+ years of experience designing and building distributed trading systems. Expertise in Java and Rust for performance-critical systems. C++ a plus. Experience building or significantly contributing to an Order Management System (OMS) or Execution Management System (EMS). Solid understanding of order state transitions, event-driven architecture, and low-latency system design. Experience with WebSocket, REST, FIX, and OpenSSL at the protocol level. Knowledge of market structure, trading workflows (high- and low-touch), market making, and electronic trading best practices. Experience with high-performance messaging frameworks (e.g., Aeron, Chronicle, ZeroMQ, Kafka). Strong computer science fundamentals in data structures, algorithms, concurrency, and memory management. Familiarity with cloud-native environments, performance tuning, and system observability.

Bonus Points

Prior experience in crypto markets or electronic trading in traditional finance. Experience integrating OMS with strategy containers, risk engines, or smart order routers. Knowledge of FIX protocol nuances and connectivity to major exchanges. Exposure to container orchestration, service mesh, or hybrid deployment architectures. Notice at Collection and Privacy Policy Applicants located in California and/or applying to a role based in California, please refer to our Notice at Collection and Privacy Policy here.   Inclusivity Statement FalconX is committed to building a diverse, inclusive, equitable, and safe workspace for all people. Our roles are intended for people from all walks of life. We encourage all those interested in applying to our organization to submit an application regardless if you are missing some of the listed background requirements, skills, or experiences! As part of our commitment to inclusivity, FalconX would like to acknowledge that the EEOC survey has limited potential responses that you can select. For legal reasons, FalconX must use this language to align with federal requirements, however, we want to ensure that you are able to provide a response to our own voluntary survey questions about your identity that best aligns with your most true self. FalconX is an equal opportunity employer and will not discriminate against an applicant or employee based on race, color, religion, national origin, ancestry, ethnicity, sex (including gender, pregnancy, sexual orientation, and gender identity), age, physical or mental disability, veteran or military status, genetic information, citizenship, or any other legally-recognized protected basis under federal, state, or local law. Applicants with disabilities may be entitled to reasonable accommodation under the Americans with Disabilities Act and other applicable state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on FalconX. Please inform FalconX’s People team at email, if you need assistance with participating in the application process.

Apply Now:

At Hiro, we build developer tools that bring Web3 to Bitcoin. Our suite of tools unlocks the full potential of Bitcoin through smart contracts, digital assets, and decentralized applications. With Hiro tools, developers can test and deploy smart contracts, spin up nodes and other server-side resources for scaling, and more. Building on Bitcoin is hard. Hiro's developer tools make it easier. We’re very proud to say that Hiro has consistently been recognized on Built In’s Best Places to Work list, including 2025’s Best Remote Startups to Work For, Best Startups to Work For in New York City, 50 Best U.S. Startup Companies to Work For, and 100 Best Remote Places to Work. Hiro is funded and backed by more than $75 million from Union Square Ventures, Y Combinator, Lux Capital, Winklevoss Capital, Naval Ravikant, and others. About the Opportunity Hiro is seeking a skilled and enthusiastic Senior Software Engineer to join our API team! If you’re passionate about building and scaling backend systems and APIs that empower developers, this role is for you. Our team thrives on collaboration, innovation, and a shared commitment to our mission. We care deeply about each other, the company, and the Stacks ecosystem, fostering a supportive and inclusive culture. As an API Software Engineer at Hiro, you’ll focus on designing, building, and optimizing the APIs that power our developer platform. In this remote-first role you will collaborate with a talented, distributed team and have broad ownership to implement services that serve our developer community. You’ll tackle challenges in scalability, performance, and security to ensure our APIs are robust and developer-friendly. You’ll work across a modern, open-source tech stack (TypeScript/Node.js, Rust, PostgreSQL, GCP, Kubernetes, etc.), leveraging CI/CD and automation (and even AI-assisted tools) to ship high-quality code efficiently. Join us at a rapidly growing startup where you can innovate freely and help bring the next generation of Web3 applications to Bitcoin. What You’ll Do:

Design, build, and maintain scalable backend services and APIs that drive Hiro’s developer platform (e.g. blockchain data, token metadata, ordinals) on Bitcoin and Stacks. Ensure high performance and reliability of our APIs – you’ll optimize endpoints, databases, and caching to handle increasing load with low latency and high uptime. Collaborate cross-functionally with product managers, frontend engineers, and DevOps to plan and implement new features end-to-end, delivering seamless experiences for developers. Write and automate thorough tests (unit, integration, performance) for your code – we use tools like k6 for load testing and Playwright for end-to-end testing – to ensure every release is of top quality. Participate in code reviews and architecture discussions, contributing to design decisions and championing engineering best practices to continuously improve code quality. Monitor and troubleshoot production systems as needed, debug issues across services and the stack, and implement fixes to maintain the stability and security of our platform. Work across the stack when necessary – primarily on backend APIs, but occasionally diving into frontend code or internal tools – to deliver complete solutions and improve our overall developer experience.

What We’re Looking For:

5+ years of software development experience building and shipping production applications, with a focus on backend systems or API-driven services. Strong proficiency in TypeScript/Node.js and/or Rust. (Our core services are built with these languages.) You can quickly pick up new languages and technologies as needed. Demonstrated experience designing, building, and scaling web APIs or microservices – you have tackled challenges in system design, performance tuning, and reliability for high-traffic services. Hands-on experience with relational databases, especially PostgreSQL – from data modeling and querying to performance optimization. Familiarity with modern cloud and container infrastructure. You’ve worked with containers/orchestration (Docker, Kubernetes) and deployed services on cloud platforms (we use GCP). Passion for code quality and automation. You write clean, maintainable code and have experience with automated testing and CI/CD pipelines (GitHub Actions or similar) to ensure smooth deployments. Excellent communication and collaboration skills. Comfortable working in a remote, distributed team and coordinating across time zones. Self-driven and ownership-minded. You take initiative, have a bias for action, and can manage projects end-to-end in a fast-paced environment.

We’d Also Like to See:

Blockchain/Web3 experience or interest. Familiarity with decentralized networks, or a keen interest in learning blockchain tech. Experience building developer-focused products. For example, working on developer tools, SDKs, or API platforms – understanding what makes a great developer experience. Exposure to performance tuning and observability. Knowledge of caching (Redis), profiling and optimizing high-traffic systems, and using monitoring/logging tools (Grafana, Prometheus, Loki) to ensure reliability. Infrastructure and DevOps know-how. Familiarity with infrastructure-as-code (Terraform), CI/CD tooling (ArgoCD), and global cloud networking (CDN/DNS/WAF like Cloudflare) is a plus. Open-source contributions or community involvement. Experience contributing to open-source projects or engaging with developer communities.

We’d love to hear from you even if you don’t have experience or interest in every bullet. What We’ll Offer:

Salary Range (regardless of location, benchmarked annually) $150,000 - $200,000. Company equity and Stacks (STX) tokens--STX is the native cryptocurrency of the Stacks network $500/mo co-working space reimbursement $1,200/yr stipend for learning and development $1,000/yr of charity donation matching to an organization of your choosing Daily Lunch Reimbursement (even if you’re remote!) Open Vacation Policy, take the days you need Family-Friendly Health Benefits Free Life and Disability Insurance Health and dependent care (FSA) Up to 16 weeks of paid parental leave Pre-tax commuter benefits 401k with 3% match

Please note that benefits vary by country, the ones shown above are for our full time U.S. based employees. Benefit information for non-US based positions will be provided to individuals who interview for those roles. Due to legal and logistical constraints, we are currently only able to hire candidates residing in the United States, Canada, and select countries in the EU. Hiro is proud to be an equal opportunity employer and deeply cares about building a diverse team. Hiro is committed to building an inclusive environment for people of all backgrounds. We do not discriminate on the basis of race, color, gender, sexual orientation, gender identity or expression, religion, disability, national origin, protected veteran status, age, or any other status protected by law.  

Apply Now:

Who are we? FalconX is a pioneering team of operators, investors, and builders committed to revolutionizing institutional access to the crypto markets. Operating at the intersection of traditional finance and 
cutting-edge technology, FalconX addresses the industry's foremost challenges: Navigating the digital asset market can be complex and fragmented, with limited products and services that support trading strategies, structures, and liquidity found in conventional financial markets. As a comprehensive solution for all digital asset strategies from start to scale, FalconX operates as the connective tissue empowering clients with seamless navigation through the ever-
evolving cryptocurrency landscape.Responsibilities

Be part of a trading systems engineering team, dedicated to building out the core trading platforms. Work closely with cross functional teams to improve the system reliability, scalability and security. Engage in and improve the infrastructure quality supporting the platform. Build and manage systems, infrastructure and applications through automation. Provide operational support to internal teams working on the platform. Work on improvements to bring in high efficiency, reduce latency, deploy systems faster. Practice sustainable incident response and blameless postmortems. Together with your engineering team, you will share an on-call rotation and be an escalation contact for service incidents. Implement and maintain rigorous security best practices across all infrastructure, with a focus on minimizing attack surface and ensuring data integrity. Monitor system health and performance with a keen eye for identifying and resolving issues before they affect trading activity.

 Minimum Qualification

Bachelors with 5+ years of working experience as Site Reliability Engineering (SRE) / Devops Engineer Strong knowledge of Linux system internals (kernels, memory management, file systems & network I/O optimization) as well as bash scripting. Proven expertise optimizing systems for lowest latency performance and productionizing trading systems, from initial concept to full deployment, including on-prem and colocation. Strong working knowledge of network communications fundamentals TCP/IP and UDP Knowledge of FIX protocol, as well as familiarity with low latency multicast with Aeron. Strong skills around observability, debugging and performance tuning, with a willingness to dive-deep to determine the root cause,  Effective communicator, with the ability to explain root causes in plain language, then outline plans and recommendations to remediate and ultimately to execute plans that systematically resolve issues. Demonstrated ability to build tools that enable rapid operational triage; leveraging logs, performance telemetry metrics and traces to make Grafana dashboards (or similar)  Strong experience deploying and managing Cloud infrastructure with providers like AWS, Azure and/or GCP (accounts, profiles, IAM roles, Policies, service classes, instance types, etc.) Strong experience adapting workloads to use Cloud Native technologies, like kubernetes and docker etc. (Dockerfile, docker-compose, helm charts, deploy manifest, ingress wiring, service mesh, etc.) Expertise using devops deployment tooling, like Github Actions, Jenkins, ArgoCD and Ansible. Hands-on experience developing in one or more programming languages: C, C++, Java, Python, or Go. Proficient in utilizing C++ build systems such as CMake and building CI/CD pipelines for trading systems. Working knowledge of key backing services like mysql, PostgresDB, Redis, MongoDB, DynamoDB, Kafka, RabbitMQ, etc.

Preferred Qualification

Extensive experience with DevOps for Deployment automation and App level support, as well as SRE and/or Linux systems Administrator for systems and infrastructure level support. Extensive experience in a Low Latency Electronic trading environment, where high performance is critical at all stages of the infrastructure, network and application design and implementation. Expertise in developing advanced observability capabilities (USE-RED signals, Tracing, front end observability etc) 

Bonus Points:

Experience with hardware acceleration technologies (FPGAs, GPUs, LPU, TPU). Experience with financial data security regulations (PCI DSS, SOC 2). Familiarity with algorithmic trading strategies and quantitative analysis concepts. Notice at Collection and Privacy Policy Applicants located in California and/or applying to a role based in California, please refer to our Notice at Collection and Privacy Policy here.   Inclusivity Statement FalconX is committed to building a diverse, inclusive, equitable, and safe workspace for all people. Our roles are intended for people from all walks of life. We encourage all those interested in applying to our organization to submit an application regardless if you are missing some of the listed background requirements, skills, or experiences! As part of our commitment to inclusivity, FalconX would like to acknowledge that the EEOC survey has limited potential responses that you can select. For legal reasons, FalconX must use this language to align with federal requirements, however, we want to ensure that you are able to provide a response to our own voluntary survey questions about your identity that best aligns with your most true self. FalconX is an equal opportunity employer and will not discriminate against an applicant or employee based on race, color, religion, national origin, ancestry, ethnicity, sex (including gender, pregnancy, sexual orientation, and gender identity), age, physical or mental disability, veteran or military status, genetic information, citizenship, or any other legally-recognized protected basis under federal, state, or local law. Applicants with disabilities may be entitled to reasonable accommodation under the Americans with Disabilities Act and other applicable state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on FalconX. Please inform FalconX’s People team at email, if you need assistance with participating in the application process.

Apply Now:

As a Senior Blockchain Engineer, you will be responsible for designing, developing, and optimizing smart contracts and blockchain infrastructure for our platform. You will work closely with the CPO and product teams, and other engineers to deliver innovative and secure solutions within the DeFi ecosystem.

Technical Leadership & Architecture

• Design and optimize blockchain product architecture with a focus on scalability, security, and performance.
• Develop and improve cross-chain interoperability solutions (cross-chain swaps, bridges, and interconnectivity).
• Lead the development, auditing, and integration of smart contracts within decentralized protocols.
• Design and develop efficient algorithms with a focus on gas optimization.
• Conduct technical research, proof-of-concept (PoC) experiments, and implement best practices in blockchain development.

Team Collaboration & Development Process

• Work closely with product and engineering teams to design optimal blockchain solutions.
• Define and implement effective CI/CD processes for blockchain development.
• Perform code reviews, mentor developers, and enforce best practices in blockchain engineering.
• Collaborate with auditors and cross-functional teams to ensure successful product launches.

Technical Excellence & Innovation

• Continuously monitor emerging blockchain, Web3, and crypto technologies.
• Analyze and address potential attack vectors, ensuring security best practices.
• Optimize blockchain infrastructure to improve performance and reduce transaction costs.
• Engage with blockchain communities, contribute to open-source initiatives, and participate in ecosystem discussions.

Experience Required

• 7+ years of software development experience, with at least 3+ years in blockchain engineering.
• Deep understanding of blockchain ecosystems, smart contracts (Solidity, Yul, EVM), and decentralized applications (dApps).
• Hands-on experience with Ethereum, Layer 2 solutions (Optimistic & ZK Rollups), and cross-chain protocols (atomic swaps, bridges, etc.).
• Proven track record in technical leadership, architectural decision-making, and mentoring development teams.
• Strong background in blockchain security and experience with smart contract audits.

Skills

• Proficiency in Solidity, Yul, Rust, TypeScript.
• Experience with smart contract development and deployment frameworks (Foundry, Hardhat).
• Understanding of DeFi protocols, AMMs, liquidity pools, and oracle integrations.
• Expertise in blockchain security principles and smart contract auditing methodologies.
• Experience in building high-performance distributed systems.

Mindset

• “Get Stuff Done” Mentality – ability to execute quickly while maintaining security and quality.
• Strong problem-solving skills and ability to navigate the constant innovations of the crypto market.
• Passion for research, innovation, and staying ahead of blockchain industry trends.
• Commitment to decentralization and open-source development.

Performance Measurement

• Speed and efficiency of feature deployments and updates.
• Code quality and successful security audit results.
• Impact on system architecture and scalability.
• Contribution to team growth and technical expertise.

Why you’ll love working with us

• Join a young, creative team in a fast-paced and supportive environment
• We’re open to new ideas — if you’ve got a vision, pitch it and make it happen
• Enjoy competitive pay that matches your skills and experience
• Be part of a company that’s shaping the future of DeFi
• Take time when you need it — we offer unlimited vacation days
• Get fully compensated for your work gear — we’ll set you up for success
• Travel with us! We host an annual team retreat at a top international location

As DevOps Lead, you will drive our DevOps strategy, ensuring the reliability and scalability of Axelar’s infrastructure. You’ll lead a team of engineers, fostering a culture of automation, continuous improvement, and operational excellence. You’ll work closely with engineering teams to support development and production environments, optimizing deployment pipelines and improving system reliability.

Your responsibilities

• Lead and mentor a team of DevOps engineers, guiding best practices in infrastructure automation, security, and reliability.
• Own and enhance our CI/CD pipelines, ensuring smooth and automated deployments across multiple blockchain ecosystems.
• Improve monitoring, alerting, and observability across the stack using tools like Grafana, Prometheus, and other monitoring solutions.
• Optimize infrastructure for scalability, security, and cost-efficiency, leveraging Kubernetes, Docker, and cloud services like AWS.
• Drive automation initiatives, minimizing manual operations and improving deployment workflows.
• Collaborate with engineering teams to improve DevOps practices, troubleshooting issues and enhancing development workflows.
• Ensure high availability and reliability of our services, proactively identifying and addressing infrastructure bottlenecks.
• Stay ahead of emerging technologies in Web3 DevOps, continuously improving our stack to support blockchain interoperability.

Your profile

• Proven experience in DevOps with a strong background in infrastructure automation, CI/CD, and cloud services.
• Experience leading a DevOps function or team, mentoring engineers, and driving strategic improvements.
• Hands-on expertise in Kubernetes, Docker, and cloud platforms (AWS, GCP, or similar).
• Strong scripting, automation and IaC skills (Bash, Python, Javascript, Terraform, etc.).
• Experience with monitoring and alerting tools (Grafana, Prometheus, ELK, or similar).
• Understanding of blockchain networks, DeFi protocols, or decentralized infrastructure is a plus.
• Self-starter with a problem-solving mindset, thriving in a fast-paced, distributed team.

Why us?

• Autonomous, distributed environment with the opportunity to work collaboratively in a diverse team worldwide.
• The scope to contribute to high-impact work and make a difference in a decentralized protocol.
• The chance to challenge yourself whilst learning heaps of stuff in the process.
• Unlimited time off throughout the year to rest and recharge.
• Competitive compensation with stock options, experiencing growth from the initial phase.

About us

Interop Labs builds interoperability technology.   Interoperability between blockchains is crucial technology infrastructure for the growth of Web3 and the advancement of internet technology as a whole. Interop Labs is the initial developer of Axelar Network - the programmable Web3 interoperability platform, scaling the next generation of internet applications to billions of users. Axelar network’s key attributes are programmability, security and scalability.

Axelar has raised over $100 million from leading VCs including DCVC, Galaxy, Polychain, Dragonfly, Coinbase, and more. Its diverse partner ecosystem spans industry heavyweights such as Ripple, Circle, dYdX, Uniswap, JPMorgan, Deutsche Bank, Microsoft, and others—underscoring Axelar’s unique market position and opportunity in unifying stacks between traditional finance and decentralized ecosystems. Axelar protocol was founded by Sergey Gorbunov (MIT PhD, UWaterloo Professor) and Georgios Vlachos (MIT MSc, Math Gold Medalist), who previously helped to build and launch Algorand.

Apply Now:

Full time - permanent role - Paris or full remote from Western EU - 58-70k€ + shares

We’re looking for a Back-end Engineer at Kiln. We are maintaining about 26 protocols.

1) Building the product: You’ll be working closely with the Product and Infrastructure teams to plan, architect, and implement our core product. You’ll take part in the construction of the roadmap with the rest of the team. In this role, it includes:

• Development of data aggregators for blockchains

• Development of new Golang microservices within the Kiln stack

• Taking part in automation & deployment processes

• Framework development

2) Owning what you build: As you architect, test, and refine the Kiln platform, you will ensure that our services communicate with each other seamlessly, have minimal downtime, and recover quickly (daytime, no on-calls)

3) Helping grow the Team: Everyone on the early team plays an important role in attracting, closing, and growing other talented team members. You can also mentor or brainstorm with other backend developers.

Our stack

• Mostly in Golang with a bit of JavaScript and TypeScript

• Communication between services is done using HTTP Rest, and most of our databases are backed by PostgreSQL

• Everything runs in Kubernetes on GCP

Preferred experience

Skills & background

• Strong communication skills both in French & English to facilitate the design of scalable architectures with SREs

  • French can be a "nice to have" if you have several professional web3 experiences

• Golang (over 1 year of experience)

• Over 4 years of experience designing, building, and deploying user-facing, infrastructure-related, and/or API-based products (Python, PHP...)

  • Experience coding in JavaScript and TypeScript is a plus

• Experience working with container technologies such as Docker, Kubernetes, and Continuous Integration is a plus

• Familiarity with CGP is a plus

Soft skills

• Curiosity and the ability to dig into a topic and follow through

• Team spirit: discuss, do not try to impose

• Be pragmatic to not over-engineer unnecessarily: startups need to quickly adapt

• Own what is coded and shipped to production

• Trust & clear communication

• Real interest in the blockchain and cryptocurrency space

About Kiln:

Kiln is the leading enterprise-grade rewards platform that enables institutional customers to stake assets and integrate staking & DeFi functionality into their offerings. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management.

With $11+ billion in crypto assets staked through our platform, Kiln has established a strong presence on Ethereum, managing over 4.5% of the network through 50,000+ validators — all with zero slashing events.

Kiln serves more than 140 leading customers, including Binance, BitPanda, Bitgo, Fireblocks, VanEck, and TrustWallet.

Our team of 92 ecosystem enthusiasts brings experience from industry leaders like Google, Circle, Ledger, Chainalysis, and other prominent technology and cryptocurrency companies.

We've raised $30M in total funding from prominent investors including 1kx, Crypto.com, Illuminate Financial, Consensys, Wintermute, Kraken Ventures...

Join Kiln and help us make the web more secure, stable, decentralized, and fair!

How Kiln will support you:

At Kiln, our values drive us: Technical Excellence ensures top security and usability; Innovation-Driven Meritocracy elevates groundbreaking ideas; Trust and Transparency build reliability through open communication; and People First keeps our team and clients at the heart of everything we do.

• A fast-paced, bureaucracy-free work environment

• Equity share options in the business: if Kiln succeeds, we all succeed!

• Competitive salary

• Flexible holiday

• Flexible remote working

• Choose your IT equipment

• Contribution to Internet connexion

• Significant personal development budget (books, training)

• Overseas tech conferences budget

Kiln is an Equal Opportunity Employer

We are committed to fostering an inclusive and diverse workplace where everyone is valued and respected. We welcome applications from all backgrounds, including women or persons with disabilities.

Your interview process

Our thorough process ensures the best fit for both you and Kiln, and we strive to make each step valuable and efficient.

1. Recruiter's discussion (45 min) with Myriam

2. Take-home test (< 3 hours)

3. Technical Interview (90 min)

4. Core Values Interview (45 min)

5. Founders Interview (30 min)

6. Offer!

Your personal information will be securely stored in our Applicant Tracking System (ATS) and will not be shared with external parties. We comply fully with GDPR regulations to protect your data and privacy.

Please note that we do not sponsor visas for persons without work authorization in your location. This role is for full-time employees only (no B2B or contractors). Thank you!

Apply Now:

DFINITY is seeking a Senior Backend Software Engineer to join the team building Caffeine, an innovative AI-driven no-code platform. Caffeine will empower everyday users to design, develop, and deploy software applications on the Internet Computer (IC), a revolutionary decentralized and serverless alternative to traditional cloud compute platforms. Are you new to decentralization or not an expert in blockchain or cryptography? That’s okay! We have some of the world’s foremost experts and they’re excited to share their knowledge. You bring your awesome skills and help us create something amazing.* Please note that this role requires in-office work from our amazing office in San Francisco 3 days per week. What you’ll work on: You’ll own the complete software development lifecycle for key products, including:

Caffeine: A user-friendly tool empowering both technical and non-technical users to create and deploy SaaS applications using natural language prompts ICP Ninja: A web-based IDE designed for new ICP developers, simplifying and accelerating software development and deployment on the Internet Computer CaLM (Canister Lifecycle Manager) – a build, deploy, and monitoring service for managing the entire lifecycle of IC smart contracts 

You’ll primarily work in Rust, TypeScript,Node,js, and other modern backend technologies. Responsibilities:

Develop robust, secure, and scalable backend systems and services using Rust and TypeScript Manage the entire feature lifecycle, from initial concept and design through implementation and ongoing support Collaborate with platform engineering teams to deploy and maintain production services Design and implement CI/CD pipelines for rapid product iteration as user adoption increases Collaborate with other engineers and business stakeholders to define and deliver high-impact solutions Mentor fellow engineers to promote knowledge sharing and teamwork. Contribute to frontend codebases (TypeScript) and SDKs as needed to ensure complete product delivery

You might be a great fit if you:

Possess a strong foundation in computer science (degree or equivalent) Have extensive experience leading full-stack engineering projects Demonstrate strong proficiency in modern backend development languages, including TypeScript, Go, Python, and Rust Have experience designing and building REST APIs for B2B and B2C applications Have a proven track record of building distributed systems, developer tools, or user-facing products Are curious and comfortable contributing to frontend development as needed Can effectively collaborate in a multi-disciplinary team across multiple time zones Exhibit excellent interpersonal and communication skills Are passionate about democratizing software engineering and building a more resilient internet

Bonus Points:

Proven experience developing backend applications using Rust Active contributions to open-source software projects Experience in building products leveraging large language models (LLMs) Familiarity with the Internet Computer or other blockchain technologies

More information about what you'll be working on:

Internet Computer Read about Caffeine in the ICP 2025 Roadmap and watch Where AI Builds to learn more about what this team is working on. Try icp.ninja to see how the Internet Computer makes developing and deploying applications a streamlined process.

Base Salary Range:  $175,000 - $235,000/yr This position can be considered across multiple levels. Total compensation at DFINITY consists of base salary + generous bonus and is determined based on multiple factors including job leveling, areas of expertise, educational background, geographic location and overall experience.   In addition to the cash components of our offers, we have generous benefits including top tier medical, dental, and vision insurance; disability insurance; life insurance; 401(k); flexible PTO policy in addition to paid holidays.About DFINITY and the Internet Computer:

DFINITY is a leading contributor to the Internet Computer Protocol (ICP), with a mission to bring the world's compute onto the secure ICP network. Built on its unique third-generation blockchain technology, ICP enables the development and operation of a new generation of unstoppable, tamper-proof, fully decentralized web applications. Its powerful technology can run entire AI models within smart contracts, representing a major advancement for secure AI. Through seamless integration with Bitcoin, Ethereum, and other networks, ICP facilitates multi-chain operations for digital assets and web3. Join our team of over 250 talented individuals, including world-renowned cryptographers, distributed systems engineers, programming language experts, and industry leaders, who are shaping the future of the internet and web3.

DFINITY was founded in 2016 by entrepreneur and crypto theoretician, Dominic Williams.All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Apply Now:

About CoW DAO

CoW DAO is on a mission to protect Ethereum users from MEV and optimize trade execution across DeFi. We achieve this through the CoW Protocol, CoW Swap (a leading intent-based DEX aggregator), and the innovative MEV Blocker, which together help secure, aggregate, and route trades for optimal outcomes. We also fund values-aligned projects via the CoW Grants Program.

CoW Protocol is consistently ranked among the top DEX aggregators by monthly volume and is the largest intent-based exchange. Our MEV Blocker protects trades from harmful MEV extraction and is integrated across the Ethereum ecosystem. The CoW AMM is the only live AMM designed to protect liquidity providers from LVR (loss-versus-rebalancing).

With over 100 open-source repositories on GitHub, we’re transparent, community-driven, and deeply committed to the open-source ethos. Our real-time Dune Analytics dashboard showcases billions in cumulative trading volume and a rapidly growing user base. As we continue to scale, CoW DAO remains at the forefront of DeFi innovation, prioritizing security, efficiency, and decentralization.

Learn more

About the role

Location: We are a fully remote team, and although we hire almost globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time

Please note we’re not hiring from the US, Australia, or New Zealand

Position: Full-time contractor

We need a Site Reliability Engineer who’s hungry for impact, loves building things from scratch, and enjoys keeping critical infrastructure running like a well-oiled machine. You’ll be working with a team that values autonomy, ownership, and a growth mindset—if that sounds like you, keep reading! 🚀

What You’ll Do

• Keep things running smoothly – You’ll build, maintain, and optimize our Kubernetes workloads while ensuring scalable, resilient cloud infrastructure using Infrastructure-as-Code
• Build cool stuff – Automate deployments, reduce tech debt, and optimize AWS costs to improve infrastructure efficiency
• Shape the future of DevOps at CoW – Drive CI/CD workflow standards, contribute to platform architecture & security, and enhance on-call and postmortem processes to foster a strong DevOps culture
• Strengthen our blockchain infrastructure – Deploy and manage Ethereum nodes & validators, establish SLAs, and ensure high availability across our network
• Own reliability metrics – Establish SLIs/SLOs for our solver competition, RPCs, and trades; build and manage error budgets with stakeholders
• Lead operational excellence – Rotate with the on-call team, lead blameless retrospectives, and automate runbooks to continuously improve resilience
• Teach and share – We love knowledge sharing! Be ready to collaborate, mentor, and even lead a small presentation for the team
• Automate and optimize – Modify and extend Pulumi configurations for AWS, fine-tune deployments, and continuously improve alerting solutions
• Enhance observability & security – Improve logging architecture, security measures, and database health to ensure reliable infrastructure performance

Our Tech Stack

• Our SRE Stack: AWS, Kubernetes, Pulumi, Flux, Ansible, OpenSearch, Nginx, Prometheus, Grafana, Docker and Linux
• Blockchain Nodes: Erigon, Reth, Nitro

Who You Are

• Kubernetes Mastery – You’ve deployed and maintained production-grade K8s clusters before
• Cloud & DevOps Expertise – Strong experience with AWS, CI/CD, Docker, and Linux
• Blockchain Expertise? Even Better! – Experience running Ethereum nodes (or other blockchain infra) is a plus.
• On-Call Ready – You’re comfortable handling incidents and making sure things don’t break (or fixing them fast if they do!)
• Monitoring Pro – You know your way around Prometheus, Grafana, and Elasticsearch
• Database Knowledge – We use Postgres, but any database experience is a plus
• Coding Background – You’ve written production-level code in Python, Go, Rust, or similar for at least 1-2 years
• Team Player & Communicator – We’re a remote team, so documentation, knowledge sharing, and collaboration are key

What We Can Offer You

• Impact & Ownership – Your work will directly shape the future of DeFi.
• Flexibility – Remote-friendly with the option to join our Lisbon hub
• Token Plan – Be part of our mission and shape the future of CoW DAO
• Team Gatherings – Regular meetups & off-sites retreats to connect IRL.
• Well-being Learning Budget – We support your growth, mental health, active life style
• Hardware Budget – Get the setup you need to Moo 🐮

Ready to Join the Herd?

Hit that apply button and let’s chat! 🚀

Referral Program

Earn 5.000 USDC or USD with the refer-to-earn program. More details here.

Culture

Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!

At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our diverse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.

About the Company:  Shardeum is building a layer 1, EVM-based, linearly scalable, smart contract platform that provides low gas fees forever while maintaining true decentralization and solid security through dynamic state sharding. Shardeum aims to be a chain capable of onboarding over a billion people to the crypto revolution, while also democratizing accessibility to decentralization. Shardeum’s mission is supported by prominent Venture Capitalists in the blockchain space, and we are on track to become one of the most widely used and well known smart contract platforms in blockchain history.We encourage you to browse our website, Whitepaper, Discord and YouTube channel to learn more about the project. You can even try downloading our validator software and joining our Testnet. We encourage people of all backgrounds to apply. Your talent and potential is what matters most to us. Shardeum is committed to creating an inclusive culture.About The Role: The Engineering team at Shardeum is responsible for delivering the Shardeum Mainnet and developing critical components such as the smart contract platform, consensus layer, and protocol layer. As part of this team, the Senior Software Engineer - Testing Tools & Strategy will play a key role in ensuring the quality, reliability, and performance of Shardeum’s decentralized platform through robust test automation, debugging, and validation processes. This role is ideal for engineers who have a passion for test automation, load testing, and identifying root causes of bugs to enhance blockchain performance and scalability. If you’re excited about solving unique challenges in the Web3 space and driving innovation in blockchain testing methodologies, we want to hear from you! What You'll Be Doing:

Analyze bug tickets, debug code, and identify the root cause of errors across the Shardeum platform. Design, develop, and maintain test automation frameworks and reusable test scripts to validate core functionality, including nodes, consensus mechanisms, smart contracts, and blockchain transactions. Utilize cutting edge AI tools to make testing faster and more efficient (Cursor, Github Copilot, Windsurf, Cline, etc..) Develop and execute load testing scripts to validate system performance under high transaction loads and varying node configurations. Create comprehensive test coverage through functional, integration, system, and regression testing while optimizing test suites and identifying performance bottlenecks. Develop end-to-end (E2E) test cases for complex workflows, ensuring reliability of consensus protocols and smart contract execution. Collaborate closely with development teams to integrate testing into CI/CD pipelines, improve testing workflows, and troubleshoot dependency failures. Build and maintain internal tools to improve developer experience, productivity, and test efficiency. Troubleshoot highly complex automated testing failures using industry-standard frameworks and custom tools, working with developers and backend partners to triage issues and improve E2E reliability. Develop monitoring tools and utilities to track blockchain-specific performance metrics and test results. Participate actively in agile ceremonies, including sprint planning, stand-ups, and retrospectives, to drive testing best practices. Continuously research and adopt innovative tools, frameworks, and testing methodologies to improve quality, scalability, and efficiency of testing processes.

What We're Looking For:

5+ years of experience in Software Engineering experience with a focus on testing. Proficiency in programming languages like TypeScript/JavaScript and Node.js, with the ability to develop robust and reusable test scripts. Ability/desire to write Unit Tests in TypeScript/JavaScript and Node.js Proven ability to analyze and debug complex codebases, troubleshoot multi-tier web architecture issues, and identify root causes of failures. Experience integrating automated tests into CI/CD workflows (e.g., GitHub Actions, Jenkins). Expertise in defining and implementing release, regression, and smoke testing strategies for large, multi-team applications. Experience with white-box testing methodologies to ensure deep validation of internal components. Strong problem-solving and critical-thinking skills, particularly in analyzing blockchain-specific issues. You have a tester mindset, are curious, and excel at designing innovative and interesting test scenarios. You are creative in applying proven tools/test frameworks as well as crafting new solutions to challenging problems. Knowledge of Agile/Scrum methodologies and the software development lifecycle. Excellent verbal and written communication skills for clear bug reporting and collaboration across teams.

We'd Love If You Have:

Experience with testing decentralized applications (dApps), consensus protocols, or blockchain platforms. Experience in running nodes within blockchain networks and monitoring performance metrics. Familiarity with blockchain tools and frameworks (e.g., Web3.js, Hardhat, Truffle). Hands-on knowledge and experience with AI tools (Cursor, Github Copilot, Windsurf, Cline, etc...), and the ability to demonstrate how you utilize them in your day to day. Contributions to open-source projects related to testing, automation, or blockchain. A passion for emerging technologies, including Web3, AI, and distributed systems. Experience using or contributing to the Shardeum open-source repos. Familiarity with blockchain performance benchmarks and profiling tools. Knowledge of the Bitcoin and Ethereum whitepapers.

We are building the infrastructure for Web 3.0. 

Apply Now:

BitGo is the leading infrastructure provider of digital asset solutions, delivering custody, wallets, staking, trading, financing, and settlement services from regulated cold storage. Since our founding in 2013, we have focused on enabling our clients to securely navigate the digital asset space. With a global presence and multiple Trust companies, BitGo serves thousands of institutions, including many of the industry's top brands, exchanges, and platforms, and millions of retail investors worldwide. As the operational backbone of the digital economy, BitGo handles a significant portion of Bitcoin network transactions and is the largest independent digital asset custodian, and staking provider, in the world. For more information, visit www.bitgo.com. Responsibilities

Lead efforts to improve the developer experience for external clients integrating with BitGo’s APIs. Continuously refine and enhance our API documentation portal to be best-in-class, ensuring clarity, completeness, and ease of use (in collaboration with technical writers). Define and maintain a structured process for API change management, ensuring external developers are informed in advance and minimizing disruption. Establish and enforce best practices for API design, versioning, and deprecation strategies. Maintain and extend the system that derives OpenAPI specifications from service implementations, ensuring accuracy and usability. Own and improve the BitGoJS SDK and BitGo Express, ensuring security, usability, and consistency across integrations. Track user journeys as developers integrate with our API, using data and direct client feedback to identify friction points and propose improvements that reduce time to successful integration. Work closely with engineers, product managers, and developer relations teams to drive alignment on API strategy and enhancements. Implement feedback loops and directly engage with clients (engineers integrating with our API) to improve API usability and onboarding. Drive initiatives to improve API discoverability, consistency, and developer tooling.

Required Qualifications

Deep expertise in API design and management, including REST, OpenAPI, and SDK development. Experience managing API change processes that minimize client disruption and ensure smooth transitions. Strong TypeScript and Node.js expertise, particularly in backend service development. Experience maintaining SDKs and API clients, with a focus on security, usability, and developer experience. Excellent communication and collaboration skills, with a high degree of empathy for external developers. Comfortable talking directly to clients (engineering teams integrating with our API) for feedback and insights.

Preferred Qualifications

Experience working on API developer portals and documentation tooling. Familiarity with tools for generating and maintaining OpenAPI specifications. Strong data analysis skills, with experience tracking user journeys and using data to drive continuous improvement. Background in developer relations, API product management, or related areas. Knowledge of versioning strategies, deprecation policies, and backward compatibility principles. Familiarity with CI/CD workflows and automation tools to improve API deployment processes.

Why Join BitGo? Disrupting an industry takes vision, innovation, passion, technical chops, drive to deliver, collaboration, and execution. Join a team of great people who strive for excellence and personify our corporate values of ownership, craftsmanship, and open communication. We are looking for new colleagues who bring innovative ways of thinking and problem solving, and who want risks to be part of the team that changes the world's financial markets. Here are some of the benefits* of working at BitGo:

Competitive base salary, bonus and stock options 100% company paid health insurance for employee, partner and dependents Up to 4% 401k company match Paid parental leave, Paid vacation Free commuter/parking pass Free custom lunches, dinners and snacks  Computer equipment and workplace furniture to suit your needs Great colleagues and inspiring startup environment

Cryptocurrencies are the most disruptive change the financial services industry has seen in years. Join us and you'll be able to look back and say you were part of the team that transformed investing. Pay Transparency Notice: Depending upon your leveling and location, the compensation for this role averages between $165,000 - $210,000 USD base salary. Equity, an annual performance bonus and the benefits outlined above are also a part of this role's package.

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Apply Now:

VDEX is a fast-growing DeFi startup focused on building a decentralized perpetual exchange. VDEX is backed by Binance Labs and Gate Exchange and passed $10 million in volume last month.

Powered by Virtual Rollups, the VDEX architecture is designed to overcome the performance and cost limitations of traditional blockchain systems by allowing the users to trade with instant finality, ZeroGas fees and omnichain (trade among different chains without requiring any bridge).

VDEX offers competitive salary and generous equity/token.

Level: Mid to Senior

Responsibilities

• Collaborate with senior developers and blockchain engineers to design and develop backend services in Golang for our DeFi platform and improve our frontend in Typescript.
• Maintain and improve existing backend, frontend, and our smart contracts on EVM chains.
• Write clean, efficient, and well-documented code.
• Participate in code reviews and contribute to improving engineering practices.
• Support integration with new features and DeFi protocols.

Requirements

• Solid programming skills in Golang (Go) and Typescript, or willing to learn.
• Understanding of blockchain fundamentals and DeFi concepts like EVM, tokens, yields.
• Strong backend engineering experience, including designing APIs, services, and distributed systems with a focus on reliability and performance.
• Clean code principles: writes well-structured, readable, and testable code, adheres to SOLID principles and practices good software design patterns.
• Previous experience in remote first team, or ability to work independently in a remote-first team.
• Knowledge of basic cryptographic principles and key management.
• Comfortable using Git, Docker, AWS and CI/CD tools.
• Good communication and collaboration skills.
• Self-starter mindset and willingness to learn fast.

Nice to Have

• Understanding of traditional finance concepts like order books, perpetuals and trading concepts.
• Ability to reason in mathematical terms and provide formal arguments of correctness and security of a system.
• Experience working with smart contracts (Solidity).
• Familiarity with Ethereum and etherjs library.
• Contributions to other open-source projects or previous work in DeFi and crypto.
• Understanding of performance tuning, observability, and distributed tracing in backend systems.