About Aztec At Aztec, our goal is to add privacy to Ethereum. In the current public blockchain paradigm, users and entities unknowingly broadcast data in the public, compromising privacy and security to get trustlessness. Not only are unencrypted blockchains inherently privacy-exposing, they require significant redundancy to compute and verify the legitimacy of transactions. Implementing scalable encryption in a public blockchain paradigm requires cutting-edge math and engineering. Thankfully, our team of scientists and engineers invented Plonk, the industry-standard zkSNARK, and Noir, the universal language of zero knowledge. Now, we’re building a first of its kind Layer 2 with private smart contracts. This requires new cryptographic primitives, a zero-knowledge DSL for writing contracts, a privacy-friendly execution environment, a carefully designed set of circuits that prove the validity of the chain to L1, a decentralized block-building and proving mechanism, and a top-tier user and developer experience. And it’s now time to bring it to market. We’ve raised $125 million from industry-leading investors including a16z crypto, Paradigm, Variant, Consensys, and a_capital, and we’re growing quickly.Role Overview As a Front-End Software Engineer at Aztec Labs, you’ll be at the forefront of designing and developing intuitive, high-performance user interfaces for developers and users interacting with our zkApps, wallets, and protocol tools. You will collaborate with design, cryptography, and protocol teams to ensure seamless and secure user experiences in a highly technical, fast-paced environment. This is a unique opportunity to help define the UX of privacy in Web3 and shape how users interact with next-gen decentralized systems. Key Responsibilities

Design, implement, and maintain front-end applications for zk-powered tools and dApps. Initial projects in the first months will be designing and developing the frontends for our showcase payment dApp and sequencer staking bootstrap projects, critical for our mainnet launch this year. Work closely with product managers to align UI/UX with product requirements. Work closely with engineers to integrate aztec.js into the apps and provide critical feedback. Create and translate design mockups and wireframes into pixel-perfect, responsive interfaces. Write modular, testable, and maintainable code using modern JavaScript frameworks. Contribute to UI/UX discussions and drive decisions around user experience best practices. Ensure performance, security, and scalability of all front-end applications.

Required Qualifications

3+ years of experience building production-grade front-end applications. Strong proficiency in TypeScript, JavaScript, React or Svelte, and HTML/CSS. A deep understanding of frontend performance optimization, accessibility, and responsive design. A focused, and minimalist approach to engineering and design, avoiding bloat, and keeping the code easy for everyone to maintain. Strong communication and collaboration skills. You will be expected to develop a deep understanding of the requirements, and can then take the initiative to meet them with minimal management. Passion for blockchain technology and a strong desire to build user-first Web3 applications.

Nice to Have

Experience working with Web3 libraries (e.g., ethers.js, viem, wagmi). Familiarity with zero-knowledge proofs, privacy-preserving technologies, or blockchain protocols. Previous contributions to crypto wallets, block explorers, or dApp front-ends. Understanding of UX design principles and familiarity with Figma or design systems. Experience with end-to-end testing frameworks (e.g., Cypress, Playwright). Exposure to Layer 2 solutions and Ethereum development tools.

What we offer:

A highly competitive compensation package (including equity) Flexible and remote work environment based out of London 25 days holiday + bank holidays annually An opportunity to work at the cutting edge of blockchain with a world class cryptography and engineering team Aztec Labs is an equal opportunity employer and we value creativity, diversity, and intellectual curiosity. If you're passionate about leveraging your creative talents to make a real-world impact, and if you want to be part of a team that's shaping the future of digital privacy, then we would love to hear from you.

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Blockstream was founded in 2014 by Dr. Adam Back and a group of fellow cryptographers and engineers passionate about Bitcoin and its potential to change the future of finance. Focusing on building fundamental Bitcoin infrastructure, Blockstream quickly grew into one of the leading technology power houses of the industry. At Blockstream, we’re building solutions on Bitcoin that will disrupt the existing financial system. We imagine a world where individuals and businesses can easily access a global, permissionless system to secure their money, use it every day, and invest it or put it to work. In pursuit of our expansive vision, we’ve built a full stack of innovative products on top of the Bitcoin protocol, from layer-2 projects like Liquid and Core Lightning, to end-user software and hardware wallets like Green and Jade. Our brand stands for innovation in the Bitcoin community, and we’re growing our team to accelerate the future. Blockstream is looking for Software Engineers to work on our enterprise custody solution. You’ll design and maintain scalable end-to-end systems that serve APIs and SDKs, and work on everything from database architecture to cloud-based deployments.  What You’ll Be Doing (Responsibilities):

Design, develop, and maintain scalable end-to-end systems that serve APIs and SDKs. Full stack software development, from database architecture to cloud-based deployment. Optimize system performance and security to support high-availability applications. Collaborate with cross-functional teams, including front-end developers, product managers, and hardware engineers to deliver seamless solutions. Implement best practices in software development, including CI/CD, automated testing, and code reviews. Research and integrate emerging technologies to enhance security and system efficiency. Troubleshoot and resolve complex software issues in a fast-paced development environment. Mentor junior developers and contribute to team knowledge-sharing efforts.

What We Look For In You (Required Qualifications):

5+ years of experience in full-stack software development, with a focus on backend engineering. Proficiency in backend technologies such as C++, Python, Rust, Node.js or Java. Strong experience in designing and building RESTful APIs and SDKs. Hands-on experience with cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes). Deep understanding of database technologies, including SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis). Familiarity with authentication and security best practices, including OAuth, JWT, encryption, and access control. Experience with CI/CD pipelines, automated testing, and DevOps tools. Strong problem-solving skills and ability to work independently or as part of a team. Excellent communication skills, with the ability to explain technical concepts to non-technical stakeholders.

Nice To Haves (Preferred Qualifications):

Experience with Bitcoin, blockchain technology, or cryptography. Open-source software development experience. Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field (or equivalent experience). Experience with system/software architecture.

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Matter Labs is looking to hire a Staff Engineer (Cryptography) to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Matter Labs - Hyperscaling Ethereum with ZK tech.

The Sui Foundation exists to support the development, growth and adoption of the Sui network. Sui is the first permissionless Layer 1 blockchain designed from the ground up to enable creators and developers to build unique Web3 experiences from gaming to finance.

The Sui Foundation is committed to three decentralization principles; Embrace transparency and level the playing field, Communicate openly to build a culture of trust, and Engage directly with the community.

Mission:

Onboard the next billion users to web3 by supporting the advancement and global adoption of the Sui blockchain.

The Role:

The Developer Relations team engages with the developer community online and in person to provide expert help and guidance in building next-generation Web3 applications on Sui. By talking to the community and understanding developer pain points, the team creates a rapid and positive feedback loop between the developer community and the protocol.

Responsibilities:

• Understand the community's goals, and provide technical expertise and direction to help the developers navigate their journey of building on Sui.

• Create and own the feedback loop between the community and the network.

• Translate developer feedback into meaningful product insights for future product development.

• Develop and deliver remote and in-person training sessions and workshops for new and existing Sui developers.

Requirements:

• Based in Europe.

• 7+ years of Software Engineering or combination of Software and DevRel Engineering experience.

• Strong knowledge of storage protocols, including file- and blob-based solutions, and Web2 and Web3 (e.g. S3, Azure Blob, IPFS, Arweave, Filecoin).

• Strong written and verbal communication skills.

• Strong interest in Web3.

• Good understanding of developer profiles, developer markets and trends within Europe, gained either through developer-facing work experience or personal intuition.

Preferred:

• Home base in or proximity to a strong developer base. Preference for London, Lisbon or Barcelona. Other possibilities include Athens, Warsaw, Budapest, Belgrade and Istanbul.

• Prior DevRel experience, or related developer-facing function (e.g. Solutions Engineering).

• Experience with blockchain, cryptography and/or Web3 engineering.

• Experience with Move and/or Rust programming language(s).

Apply Now:

The Sui Foundation exists to support the development, growth and adoption of the Sui network. Sui is the first permissionless Layer 1 blockchain designed from the ground up to enable creators and developers to build unique Web3 experiences from gaming to finance.

The Sui Foundation is committed to three decentralization principles; Embrace transparency and level the playing field, Communicate openly to build a culture of trust, and Engage directly with the community.

Mission:

Onboard the next billion users to web3 by supporting the advancement and global adoption of the Sui blockchain.

The Role:

The Developer Relations team engages with the developer community online and in person to provide expert help and guidance in building next-generation Web3 applications on Sui. By talking to the community and understanding developer pain points, the team creates a rapid and positive feedback loop between the developer community and the protocol.

Responsibilities:

• Understand the community's goals, and provide technical expertise and direction to help the developers navigate their journey of building on Sui.

• Create and own the feedback loop between the community and the network.

• Translate developer feedback into meaningful product insights for future product development.

• Develop and deliver remote and in-person training sessions and workshops for new and existing Sui developers.

Requirements:

• Based in APAC.

• 7+ years of Software Engineering or combination of Software and DevRel Engineering experience.

• Strong knowledge of storage protocols, including file- and blob-based solutions, and Web2 and Web3 (e.g. S3, Azure Blob, IPFS, Arweave, Filecoin).

• Strong written and verbal communication skills.

• Strong interest in Web3.

• Good understanding of developer profiles, developer markets and trends within Europe, gained either through developer-facing work experience or personal intuition.

Preferred:

• Home base in or proximity to a strong developer base.

• Prior DevRel experience, or related developer-facing function (e.g. Solutions Engineering).

• Experience with blockchain, cryptography and/or Web3 engineering.

• Experience with Move and/or Rust programming language(s).

Apply Now:

DFINITY is seeking a Senior Software Engineer, Backend focused to join our Product Enablement team. We build open-source tools and reusable canisters that simplify workflows and streamline processes for teams building on the Internet Computer blockchain. The Poduct Enablement team is a cross-functional group of engineers on a mission to empower developers by abstracting away operational complexity so they can focus on their business requirements and product features. 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.   What You’ll Work On You’ll help design and implement backend systems that power our internal platform tools and developer-facing products. Our key projects include:

Orbit Platform – a non-custodial digital asset management platform that helps teams securely manage their digital assets   CaLM (Canister Lifecycle Manager) – a build, deploy, and monitoring service for managing the entire lifecycle of IC canisters   Canfund – a library that automates canister cycle management  

You’ll primarily work in Rust, but we expect a willingness to collaborate on TypeScript/Vue-based frontends when needed.   Responsibilities

Design and build robust, secure, and scalable backend systems and services in Rust   Own features end-to-end, from ideation and design to implementation and support   Collaborate with other engineers and stakeholders to define and deliver impactful solutions   Help maintain and improve developer workflows for Internet Computer smart contracts (canisters)   Occasionally contribute to frontend codebases (TypeScript/Vue) and SDKs to support full product delivery Mentor fellow engineers fostering a culture of knowledge sharing and collaboration

  You Might Be a Great Fit If You

Have a solid computer science background (degree or equivalent experience) Have solid experience in backend engineering roles Have Rust skills or are eager to become proficient with it   Have experience building distributed systems, developer tools, or end-user-facing products   Take ownership and thrive in highly autonomous environments   Are comfortable writing clean, maintainable code and enjoy reviewing others’ work   Have an understanding of frontend technologies (JavaScript/TypeScript, Vue/React/etc.) and are open to contributing when needed   Are excited by the potential of the Internet Computer and Web3

  Bonus Points

Experience working with the Internet Computer or other blockchains   Familiarity with service-oriented architecture (SOA) Contributions to open-source projects   Previous experience working on frontend codebases

  More Information About What You Will Be Working On

Internet Computer Orbit Canfund

Try icp.ninja to see how the Internet Computer makes developing and deploying applications a streamlined process.* Please note that this role requires in-office work from our amazing office in Zurich 3 days per week.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:

DFINITY is seeking a Software Engineer, Frontend Focused to join our Product Enablement team. We build open-source tools and reusable canisters that simplify workflows and streamline processes for teams building on the Internet Computer blockchain. The Poduct Enablement team is a cross-functional group of engineers on a mission to empower developers by abstracting away operational complexity so they can focus on their business requirements and product features. 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.   What You’ll Work On You’ll help design and implement backend systems that power our internal platform tools and developer-facing products. Our key projects include:

Orbit Platform – a non-custodial digital asset management platform that helps teams securely manage their digital assets   CaLM (Canister Lifecycle Manager) – a build, deploy, and monitoring service for managing the entire lifecycle of IC canisters   Canfund – a library that automates canister cycle management  

You’ll primarily work in TypeScript and Vue, but we expect a willingness to collaborate on Rust-based backends when needed.   Responsibilities

Build elegant, robust UIs that enhance developer and user experience Own features e2e, from ideation until release, including collaboration with designers Contribute to UI architecture and component libraries used across projects   Collaborate with backend engineers to define seamless APIs and system interactions   Occasionally contribute to backend code (Rust) to support full product delivery  

  You Might Be a Great Fit If You

Have a solid computer science background (degree or equivalent experience) Have solid experience in frontend or full stack engineering roles Have strong proficiency with modern frontend development using JavaScript/TypeScript and frameworks like Vue or React  Take ownership of your work and are comfortable working independently Care deeply about user experience and maintainable code Are curious and comfortable stepping into backend development when needed Are excited by the potential of the Internet Computer and Web3

  Bonus Points

Experience working with the Internet Computer or other blockchains   Familiarity with service-oriented architecture (SOA) Contributions to open-source projects   Previous experience working on frontend codebases

More Information About What You Will Be Working On

Internet Computer Orbit Canfund

Try icp.ninja to see how the Internet Computer makes developing and deploying applications a streamlined process.* Please note that this role requires in-office work from our amazing office in Zurich 3 days per week.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:

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.This role will require being full-time onsite at our Palo Alto office to support collaborative team dynamics and innovative problem-solving. BitGo is looking for a Senior Software Engineer to join our HSM Team and help us build an API-first platform for businesses and developers to launch crypto products. Responsibilities:

Design and build scalable, well abstracted, and robust APIs, libraries, and services to empower our API-first platform Own functionality and scalability features by taking responsibility from inception to deployment and customer integration Expose and document functionality to the UI, third-party developers, and our internal and external tooling Collaborate with cross-functional teams to define, design, and ship new features Write clean, maintainable, and efficient code Ensure the performance, quality, and responsiveness of applications Identify and correct bottlenecks and fix bugs Continuously discover, evaluate, and implement new technologies to maximize development efficiency Participate in code reviews and contribute to a culture of continuous improvement Work closely with product managers, designers, and other engineers to understand and refine product requirements Provide mentorship to your peers in the broader engineering team through code reviews and education on best practices

Skills & Experience:  We are looking for teammates who share and practice our values: open communication, transparency, taking ownership, and a high level of craftsmanship. We are looking for coworkers who share our vision and mission: deliver trust in digital assets.  Required:

Bachelor's or Master's degree in Computer Science, Mathematics, Cryptography, or a related field At least 6 years of proven experience in designing and implementing cryptographic solutions for enterprise-level systems in back-end and/or server-side development Strong understanding of cryptographic algorithms and protocols such as RSA, ECC, AES, and SHA Great at algorithm design, problem solving, and complexity analysis Strong experience with C, C++ or Rust Experience with TypeScript, Node.js, PostgreSQL and MongoDB Strong experience with RESTful API design Experience with microservices and service-oriented architectures Experience with unit and functional testing and debugging Experience in Git/GitHub and branching methodologies, code review tools, CI tools, etc. Ability to move quickly and adjust course as needed in a fast-paced environment Ability to work independently and collaboratively in a team environment.

Preferred:

Familiarity with security best practices and standards, such as ISO 27001, NIST, and FIPS. Experience working in cryptography, with a focus on TSS and MPC. Understanding of and experience working in cryptocurrencies and blockchain or centralized financial industry

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. 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 below are also a part of this role's package.  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; 5 min from Caltrain Free custom lunches, dinners and snacks  Computer equipment and workplace furniture to suit your needs Great colleagues and inspiring startup environment

*Benefits may vary based on location  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.

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What are we all about?

We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems.

Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering.

Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more.

Today, we are a 350+ strong team working remotely across 66+ countries.

Are you the one?

The Role:

We are seeking an Infrastructure Engineer with strong expertise in identity management and system integrations. This role focuses on maintaining our authentication infrastructure, managing integrations, and providing technical support to ensure smooth operations across our engineering organisation.

Primary Responsibilities

• Implement and maintain Okta-based identity management solutions
• Configure and manage integrations between various cloud services and internal applications
• Handle access control and RBAC implementation across our technology stack
• Provide DevOps support and troubleshoot integration issues
• Maintain CI/CD infrastructure and deployment pipelines
• Create clear documentation for processes and integrations

Technical Requirements

Strong understanding of:

• SAML, OAuth, and SSO implementations
• RBAC and access management
• Okta administration and integration patterns
• Cloud IAM (AWS IAM, GCP IAM)

Experience with:

• Infrastructure as Code (Terraform, Ansible)
• CI/CD tools (GitHub Actions)
• Cloud platforms (GCP and/or AWS)
• Basic scripting in Python or Go
• 2-5+ years of infrastructure/DevOps experience

Key Skills

• Strong troubleshooting and problem-solving abilities
• Experience in managing DevOps related requests efficiently
• Clear technical documentation skills
• Effective communication with technical and non-technical stakeholders
• Ability to manage multiple integration projects

Nice to Have

• Blockchain technology exposure
• JFrog Artifactory experience
• Experience with multi-factor authentication implementation
• Knowledge of security best practices

Day-to-Day Activities

• Managing Okta configurations and integrations
• Handling access control and user provisioning
• Supporting teams with authentication and authorization needs
• Implementing and maintaining security standards
• Responding to and resolving DevOps support requests
• Automating routine tasks and workflows

Keep up to date on what we are working on by following us on our social channels:

• Discord
• LinkedIn
• Twitter

POSITION SUMMARYWe are looking for a Senior Python/Golang Developer (Crypto, Blockchain) for a 100% remote, 6 month +, W-2 contract with benefits.Must be a US Citizen or Green Card Holder.  No 3rd Party C2Cs Please. DUTIES AND RESPONSIBILITIES:

Overview: The project will be updating the staking systems to comply with upcoming regulatory changes. This involves updating grpc APIs, modifying airflow jobs to process large amounts of data, and writing SQL queries for data analysis. The team supports this staking products and is the team that processes these requests and distributes these rewards to the end users. There are new regulatory rules coming into effect and this team will need to update our backend systems to conform to those rules Expected to write SQL queries to do calculations on data in a data warehouse. Write SQL queries to do those calculations.  Required Skills:

5+ years of experience Golang 5+ years of experience Python 3+ years of experience SQL Solid understanding of crypto (Blockchain, cryptography, wallets, Ethereum, EVM, etc.) 5+ years of experience in software engineering 5+ years of experience in backend services Strong communication skills Airflow and grpc are a nice to haves

Catalyte provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

Catalyte is working to fill this position ASAP, so please submit your application at your earliest convenience. The hourly rate for this position will be based on the selected candidate's experience level. Our target hourly rate range is $95-95 per hour. Actual compensation is subject to variation due to such factors as education, experience, skillset, and/or location. A full slate of benefits including Healthcare, Vision, Dental, 401K, Life Insurance, Disability, and paid Time-Off (including company-paid holidays, paid sick leave, & PTO) are available to W2 Catalyte employees and additional details can be found at www.catalyte.io. Please use the apply now button to submit your application for consideration.

EXPERIENCE AND QUALIFICATIONS

COMPANY INFORMATION

Click here to access our website for more information about our company.

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