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Echo Base is a private holding company pursuing special situation control investments in the digital assets space. Its global crypto team possesses deep experience in both the scaling of new ventures and the restructuring of complex assets. Echo Base seeks to leverage operational and technical synergies across its portfolio companies to drive innovation. Est. 2025.

The Front-end Developer is responsible for leading the design and development of user-facing applications that support Echo Base’s global P2P marketplace. This role requires deep expertise in frontend technologies, experience managing small but high-performing teams, and a hands-on approach to development. You’ll work closely with product managers, backend developers, mobile teams, and blockchain engineers to deliver high-quality, scalable, and secure web solutions.

What will you do:

• Lead the development of web-based applications using React, Typescript, and related technologies.
• Collaborate with cross-functional teams to define, design, and deliver new features aligned with the product roadmap.
• Implement best practices for frontend development, including code reviews, testing, and performance optimization.
• Mentor and guide team members, fostering a collaborative and innovative environment.
• Ensure seamless integration with backend APIs and other services, maintaining high standards for user experience.
• Manage technical debt while prioritizing scalable architecture and maintainable code.
• Build and maintain reusable components, libraries, and patterns to accelerate development across teams.
• Debug and resolve complex technical issues, ensuring the stability and performance of Echo Base’s platform.
• Collaborate with QA and DevOps teams to streamline CI/CD pipelines and improve testing coverage.
• Work with UX/UI designers to deliver pixel-perfect interfaces that meet design requirements.

Who you are:

• A hands-on leader who thrives in fast-paced environments.
• An advocate for clean code, modular design, and performance optimization.
• A collaborative communicator who enjoys solving complex challenges with cross-functional teams.
• Passionate about cryptocurrency, fintech, and the power of peer-to-peer technology.

What we are looking for:

• 5+ years of frontend development experience, including team leadership.
• Proven experience with React, Typescript, JavaScript ES6+, and state management libraries (e.g., Redux, MobX).
• Experience with integration and development of RESTful APIs.
• Expertise in optimizing frontend performance and debugging complex web applications.
• Experience with Git and CI/CD pipelines.
• Knowledge of deployment strategies and tools like GitLab CI.
• Familiarity with modern testing frameworks (e.g., Jest, Cypress).
• A solid understanding of testing strategies for frontend code.

Recommended Skills:

• Experience with mobile-friendly web development and responsive design.
• Knowledge of Web3.js or similar libraries for blockchain integration.
• Familiarity with analytics and user behavior tracking tools.
• Experience working in fintech or cryptocurrency platforms.

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WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: Senior Software Engineer plays a key role in the design, development/configuration, unit testing, installation, and ongoing maintenance of Zinnia software platforms. Works with stakeholders to develop solutions and/or products that fulfill the needs of Zinnia’s internal stakeholders and clients. Those solutions and/or products help Zinnia and it's clients to be more efficient and provide better service to end customers. SSE interacts directly with project managers and business stakeholders and may periodically interact directly with Zinnia’s clients. Will facilitate, Architect, and enable junior team members by acting as a mentor for soft skills and/or technical subject matter experts. WHAT YOU’LL DO:

Work as part of a global, cross-functional team to develop innovative software for Zinnia’s stakeholders. Contribute to projects by creating well-designed, customized, testable, and efficient code for Life & Annuity Exchange platforms. Assist our teams in providing ongoing support, troubleshooting, improvements, or custom enhancements to existing Life & Annuity Exchange platforms. Flexibility to support the challenging development and delivery needs of Zinnia Collaborate with our global teams, internal stakeholders, and customers. Act as a mentor and technology expert for team members and conduct technical reviews. Architect, Design, develop and validate various requirements for the Zinnia platforms Ability to work in a fast-paced environment, recognize and react to changing business needs and effectively prioritize tasks Must be self-motivated and able to work independently and in conjunction with team members and business units. Enthusiasm and flexibility to work on a variety of projects

WHAT YOU’LL NEED:

10-14 years of expertise in Microsoft .NET technologies with end to end project life cycle experience using Agile methodologies Architecting, designing, developing, and delivering tasks using C#/.Net, ASP.Net, MVC, Dot Net Core, Web API, Micro Services, utilizing Visual Studio IDE, SSRS, SOAP, XML, GitHub Understanding of advanced design patterns, API-first design, and SOLID principles Effective communication, interpersonal, and critical thinking skills. Ability to work as part of a cross-functional, global team. Fluent client communication, Issue management, deployment, and delivery support. Experience in WebAPI, XML, JQuery/HTML/CSS. Experience with relational databases such as SQL Server SQL Server 2014/2019+ Knowledge of cloud platforms i.e. AWS Team coordination, analytical skill, self-learning, Communication, Technical documentation, system analysis

Good to have:

Working experience on enterprise-level applications/products Working experience in React, TypeScript Insurance/financial services (Life and Annuity) industry knowledge Experience with Web-based software as a service (SaaS) application

WHAT’S IN IT FOR YOU? Zinnia offers excellent career progression and competitive compensation. We offer great benefits, including health/dental insurance, parental leave, profit sharing, PF, incentive/bonus opportunity, tuition reimbursement, and so much more. We’re looking for the best and brightest innovators in the industry to join our team. At Zinnia, you collaborate with smart, creative professionals who are dedicated to delivering cutting-edge technologies, deeper data insights, and enhanced services to transform how insurance is done. Visit our website at www.zinnia.com for more information. Apply by completing the online application on the careers section of our website. We are an Equal Opportunity employer committed to a diverse workforce. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability.

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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. Senior Software Engineer (Platform) Job Summary: As a Software Engineer in Platform Engineering, you will play a crucial role in building internal tools and contributing to platform development. This hybrid role combines elements of DevOps, Application Security (AppSec), and Architecture to streamline the development process and improve efficiency. Key Responsibilities: Library and Module Development: - Design and develop abstract libraries and modules to streamline software development processes. - Create reusable images and scaffolding tools to support microservice applications, allowing developers to focus on configuration rather than infrastructure setup. Performance and Efficiency Improvement: - Analyze existing software components to identify areas for performance enhancement using tools like [specify tools if applicable]. - Implement optimizations to improve the efficiency and scalability of software systems. Internal Tooling and Automation: - Develop internal tools that allow developers to deploy environments with simple commands. - Abstract out reusable components from the codebase, making them part of the platform for developers to use as needed. - Standardize common libraries such as logging, observability (tracing), and profiling. - Ensure seamless integration with CI/CD pipelines using tools like Jenkins and GitHub Actions. Module Maintenance and Support: - Maintain and update libraries and modules to meet evolving business needs. - Provide support and documentation for other teams to effectively utilize these resources. Testing and Quality Assurance: - Write comprehensive test cases to ensure the reliability and quality of developed libraries. - Collaborate with QA teams to implement automated testing strategies using frameworks like [specify frameworks if applicable]. Collaboration and Communication: - Work closely with Principal Engineers, architects, and cross-functional teams to understand their requirements and provide tailored solutions. - Gather feedback from developers to continuously improve the "developer experience." Continuous Learning and Improvement: - Stay updated with the latest trends and advancements in software engineering and platform technologies. - Propose and implement innovative solutions to enhance platform capabilities. Qualifications: - Bachelor's degree in Computer Science, Software Engineering, or a related field. - Proven experience as a Software Engineer with a focus on platform engineering. - Strong proficiency in Python, Go, and JavaScript programming languages. - Experience in developing and maintaining software libraries and modules. - Excellent problem-solving skills and attention to detail. - Ability to write clean, maintainable, and well-documented code. - Proficient in writing and executing test cases. Preferred Qualifications: - Experience with version control systems like Git. - Familiarity with CI/CD pipelines and DevOps practices. - Knowledge of containerization technologies such as Docker and Kubernetes. - Experience in working with cloud platforms (e.g., AWS, Google Cloud, Azure). - Understanding of Linux systems. 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.

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We are developing a miniApp in Telegram for exchanging cryptocurrencies for fiat and vice versa. Our service ensures fast, convenient, and secure exchange with minimal fees.

We are currently looking for a Backend Developer (Spring Boot) to continue development and support the project.

What you'll be doing:

• Developing and maintaining the backend for the Telegram miniApp using Spring Boot.
• Integrating with TronGrid (receiving/sending USDT TRC-20).
• Developing and improving the admin panel (user management, orders, exchange rates).
• Creating REST API for the frontend (Vue.js) and integrating with the Telegram bot.
• Optimizing the PostgreSQL database, setting up caching in Redis.
• Implementing secure authentication (JWT, OAuth 2.0).
• Ensuring server stability and fault tolerance.

What we are looking for:

• At least 2 years of experience with Java + Spring Boot.
• Strong knowledge of REST API, PostgreSQL, Redis.
• Ability to work with Docker (basic level required).
• Understanding of authentication principles (JWT/OAuth 2.0).
• Experience integrating external APIs (e.g., payment gateways, crypto APIs).
• Knowledge of multithreading and transaction processing.
• Basic knowledge of RabbitMQ/Kafka (nice to have, but not required).
• Experience with fintech or crypto-related projects is a plus.

What we offer:

• Salary $2500-3000 per month.
• Remote, office, or hybrid work (Czech Republic).
• Flexible working hours (full/part-time, full-time preferred).
• Opportunities for growth in crypto-fintech.
• Long-term collaboration (with potential for salary increases based on performance).

How to apply?

Send your resume + code samples (GitHub, portfolio) to Telegram @xchangio_support or email email

Looking forward to working with you! 🚀

Apply Now:

About Us:

Khantech is an IT startup dedicated to redefining the iGaming experience with cutting-edge technology and creative solutions. We are a team of Engineers, Designers, and gaming enthusiasts working remotely within Europe and Asia or in-house in our UAE/Dubai premises. 

About the product:

https://www.vatanplatform.com

We are looking for a highly skilled Full Stack Blockchain Developer to join our team. The ideal candidate will be proficient in both blockchain development and full-stack web development. You will be responsible for developing decentralized applications (dApps), smart contracts, and the backend and frontend of blockchain-based systems.

Job Responsibilities:

• Design, develop, and deploy smart contracts and decentralized applications (dApps) on various blockchain platforms (Ethereum, Binance Smart Chain, etc.).

• Build and maintain front-end interfaces using modern web technologies (React, Angular, Vue.js, etc.).

• Integrate front-end with back-end APIs, databases, and blockchain solutions.

• Develop and implement secure, scalable, and efficient blockchain-based systems.

• Troubleshoot, debug, and optimize blockchain applications and smart contracts.

• Collaborate with cross-functional teams including product managers, designers, and other developers to define and implement new features.

• Stay up-to-date with emerging trends and technologies in blockchain, DeFi, and Web3.

• Ensure compliance with security protocols and best practices.

• Contribute to codebase and manage version control using Git.

Key requirements:

• 3+ years of experience in full-stack development.

• Strong knowledge of cryptographic principles and blockchain architecture.

• Proficient in web technologies (HTML5, CSS3, JavaScript, TypeScript).

• Experience with databases (SQL and NoSQL).

• Knowledge of version control systems like Git.

• Experience with testing frameworks for smart contracts (Truffle, Hardhat, etc.).

• Familiarity with deploying applications on cloud platforms (AWS, GCP, etc.).

• Proven experience working with blockchain technologies (Ethereum, Solana, Binance Smart Chain, etc.).

• Hands-on experience with smart contract development (Solidity, Rust, Vyper, etc.).

• Experience building decentralized applications (dApps) and integrating them with blockchain networks.

• Familiarity with Web3.js, Ethers.js, or similar JavaScript libraries for blockchain interaction.

• Experience with backend development frameworks like Node.js, Express, Django, or Flask.

• Proficiency in front-end technologies such as React.js, Vue.js, or Angular.

Expected Soft skills (3-5 the most important attributes)

• Strong problem-solving and analytical skills.

• Excellent communication and teamwork skills.

• Ability to quickly learn new technologies and adapt to changing environments.

Benefits:

• 🚀Competitive Salary

• 📚Comprehensive Training and Career Development through our talent management program

• 🌐Fully remote or Comfortable office in Dubai, OAE/Erevan, Armenia

• 🏖️Generous Paid Vacation

Apply Now:

Biconomy empowers Web3 developers to build seamless, user-friendly dApps that work effortlessly across multiple blockchains. Our battle-tested modular account and execution stack eliminates traditional UX friction points, helping projects accelerate user adoption while reducing development costs. By processing over 50 million transactions across the 300+ dApps we’ve served, we’re powering the future of onchain economies.

The Role: Innovating at the Intersection of AI and DeFi

We are assembling a world-class team to redefine on-chain analytics using AI Agents & Machine Learning. As a DevOps Engineer, you will build and optimize the AI & ML infrastructure, enabling real-time wallet activity analysis, ML-driven tagging, and PnL insights at scale. You’ll work with Kafka, Snowflake, AWS S3, and high-speed data pipelines to process over 10-15 billion rows of historical data and real-time streaming events, ensuring a scalable, secure, and efficient AI ecosystem.

This is a high-impact role at the core of our AI-driven crypto intelligence platform.

What Will You Be Doing?

Scalable AI & ML Infrastructure

• Design & optimize cloud-native architectures for AI & ML-driven analytics on DeFi transactions.
• Develop and maintain high-performance, distributed computing environments that process billions of on-chain and off-chain events.
• Deploy and manage ML models & AI agents efficiently in Kubernetes (K8s) and other containerized environments.

High-Speed Data Engineering

• Design real-time streaming pipelines using Kafka for high-frequency on-chain transaction ingestion.
• Optimize Snowflake queries & storage solutions to handle large-scale blockchain datasets efficiently.
• Implement ETL/ELT pipelines for structured & unstructured blockchain data aggregation.

Infrastructure Automation & Reliability

• Automate cloud infrastructure using Terraform, Pulumi, or CloudFormation for seamless scaling.
• Enhance security & performance with CI/CD best practices for AI model deployment.
• Implement observability, logging & monitoring with tools like Prometheus, Grafana, and Datadog.

ML & AI Model Deployment

• Streamline model deployment for AI agents that analyze blockchain wallet behavior.
• Build infrastructure to support model training, inference, and real-time decision-making.
• Optimize GPU workloads for AI-driven pattern recognition & risk analysis.

Collaboration Across Teams

• Work alongside AI engineers, blockchain developers, and data scientists to integrate AI-driven insights into DeFi tools.
• Optimize node infrastructure & RPC services for multi-chain DeFi interactions.
• Research and implement best practices in Web3 DevOps, cloud automation, and ML infrastructure.

Requirements:

Core Experience

• 5+ years of DevOps experience, specializing in AI/ML infrastructure & high-scale data pipelines.
• Expertise in AWS, GCP, or Azure, focusing on scalable, event-driven architectures.
• Experience handling Kafka queues, Snowflake databases, and massive-scale data processing.

DevOps & Infrastructure Skills

• CI/CD Automation using GitHub Actions, CircleCI, Jenkins, or ArgoCD.
• Kubernetes & Docker for managing AI workloads and high-performance model inference.
• Infrastructure-as-Code (IaC): Terraform, Pulumi, or CloudFormation.

Data Engineering & AI Model Ops

• Experience with Kafka, Snowflake, and S3 for real-time & historical data processing.
• ML Model Deployment: Knowledge of TensorFlow, PyTorch, or ONNX for AI-based wallet analytics.
• Strong Python & Bash scripting for automation and orchestration.

Security & Reliability

• Security-first mindset: Experience with IAM, firewall management, and Web3 security best practices.
• Observability & Monitoring using Prometheus, Grafana, Datadog, or OpenTelemetry.

Bonus Skills

• Experience with multi-chain blockchain infrastructure (Ethereum, Solana, L2s).
• Knowledge of DeFi protocols, smart contracts, and risk analytics.
• Experience with AI inference at scale (Ray, Triton, Hugging Face Transformers, etc.)

What We Offer:

• Flexible Working Hours: Enjoy autonomy over your schedule.
• Generous Vacation Policy: 25 days vacation per year plus public holidays
• Competitive Salary: With regular performance reviews.
• Token Allocation: Be rewarded with tokens as part of our compensation package.
• Growth Opportunities: Be part of an exciting new project with significant career growth potential.
• Innovative Work Culture: Join a team that’s at the cutting edge of Web3, AI, and DeFi, and help shape the future of the digital economy.
• Fun and Engaging Team Activities: Game nights, virtual celebrations, and work retreats to keep things exciting.

At Biconomy, we believe in creating a diverse and inclusive workplace. We are committed to being an equal-opportunity employer, and we do not discriminate based on race, national origin, gender, gender identity, sexual orientation, disability, veteran status, age, or any other legally protected status.

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders.WHO YOU ARE: Sr. Software Engineer I, Tech Lead play a key role in the design, development/configuration, unit testing, installation, and ongoing maintenance of Zinnia software platforms. Zinnia Senior Software Engineers work with stakeholders to develop solutions and/or products that fulfill the needs of Zinnia’s internal stakeholders and clients. Those solutions and/or products help Zinnia and Zinnia clients to be more efficient and provide better service to end customers. Senior Software Engineer interacts directly with project managers and business stakeholders and may periodically interact directly with Zinnia’s clients. Senior Software Engineer will facilitate, lead, and enable junior team members by acting as a mentor for soft skills and/or technical subject matter experts. WHAT YOU’LL DO:

Work as part of a global, cross-functional team to develop innovative software for ZINNIA stakeholders. Contribute to projects by creating well-designed, customized, testable, efficient code for ZINNIA platforms. Assist our teams in providing ongoing support, troubleshooting, improvements, or custom enhancements to existing ZINNIA platforms. Flexibility to support the challenging development and delivery needs of ZINNIA Collaborate with our global teams, internal stakeholders, and customers. Act as a mentor and technology expert for team members and conduct technical reviews. Architect, Design, develop and validate various requirements for the ZINNIA platforms Ability to work in a fast-paced environment, recognize and react to changing business needs and effectively prioritize tasks Must be self-motivated and able to work both independently and in conjunction with team members and business units. Enthusiasm and flexibility to work on a variety of projects.

WHAT YOU’LL NEED:

7-11 years of experience in Backend technology - Java, J2EE, and Spring in the cloud environment (must have).  Experience in NoSQL databases, Event-driven architecture, and Domain-driven design Patience and perseverance to overcome challenges, solve problems, and learn new computer languages and techniques. Excellent work ethic. Ability to work and travel independently. Effective communication, interpersonal, and critical thinking skills. Effective troubleshooting skills. Ability to work as part of a cross-functional, global team.

Qualifications• Should have BTech / BE / MCA / MTech / ME or equivalent qualification from reputed institutes Preferred Skills:

Object Oriented Programming (OOPS) and design patterns Programming using Java 8/J2EE Competence and comfort using multiple frameworks Spring, Spring Boot SOA/Microservice Architecture Knowledge and experience with REST Git, Maven, Docker

WHAT’S IN IT FOR YOU? We’re looking for the best and brightest innovators in the industry to join our team. At Zinnia, you collaborate with smart, creative professionals dedicated to delivering cutting-edge technologies, deeper data insights, and enhanced services to transform how insurance is done. Visit our website at www.zinnia.com for more information. Apply by completing the online application on the careers section of our website. We are an Equal Opportunity employer committed to a diverse workforce. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability.

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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. View all our open positions here: https://www.nethermind.io/open-roles The Nethermind team is seeking a experience Software engineer with a background in confidential computing. We offer a unique opportunity to work on a variety of diverse projects where strong experience, knowledge and understanding of secure computing platforms is a must. The candidate will be working cross-functionally across the company partnering with our product teams to implement solutions in secure environments in a broad array of applications of use cases from AI through to Finance. The role requires a balance of technical expertise, research mindset, as well as practical engineering skills to take innovative ideas into production. How to Know If You're the Right Fit If you're driven by complex challenges and excited by the prospect of working with cutting-edge technologies, this role is for you. We're looking for individuals who are not just engineers but innovators—those who are eager to collaborate with the best minds in the industry and make a significant impact on the future of technology. Why This Role Is Exciting

Work with the Best: Collaborate with some of the brightest engineers and researchers in the industry. Innovative Challenges: Tackle projects that require deep algorithmic thinking and advanced design. Impactful Work: Contribute directly to the development of technologies that push the boundaries of what's possible. Collaborative Environment: Partner with leading developers and researchers shaping the future of decentralized technologies.

Responsibilities:

Collaborating with engineers across the company on all stages of projects, through design, implementation and testing. Partnering with teams across the company from Product through to Engineering to apply your skills to solutions integrating confidential computing. Contribute to product documentation. Maintain, test and release new and existing confidential compute infrastructure.

Skills:

Experienced shipping new products all the way through the product stack. Proficiency with developing in C++. Experience with Rust or JavaScript. Knowledge of Trusted Execution Environments (e.g. SGX, TDX, TrustZone, NVIDIA Confidential Compute). Familiarity with web protocols (HTTP, QUIC). Understanding of the CI/CD developer pipeline and tools (Github, VSCode, Linux).

Nice to have:

Understanding of distributed consensus algorithms and cryptography concepts (e.g. Zero-Knowledge). You can think independently, with drive and initiative, even when challenged and under pressure. You can communicate complex concepts and ideas to a broad array of audiences. You have a strong interest in distributed systems, privacy technologies, blockchains and cryptocurrencies. Disclaimer: I hereby consent to my personal information being stored and processed by Demerzel Solutions Limited (t/a Nethermind) (the “Company”) for recruitment purposes in relation to both the selected job role and any other role the Company considers me a qualified candidate for. All data storing and processing by the Company takes place in accordance with the UK GDPR. Kindly refer to our privacy policy for more details. Your consent to share personal information is entirely voluntary, and you may withdraw your consent at any time. Should you have any questions about this process, or wish to withdraw your consent please contact: email Keep up to date on what we are working on by following us on our social channels       Click here to view our Privacy Policy.

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About prePO 🌎

prePO is an investing platform offering tokenized exposure to the top pre-IPO companies like SpaceX and OpenAI.

We live in a world of financial exclusion, where retail investors are systematically barred from participating in private markets (where most wealth is created). Even those who do gain access are stuck with systems that are slow, costly, fragmented, illiquid, capital-inefficient, and restrictive.

prePO changes the game. Our compliant, crypto-abstracted app allows anyone to seamlessly buy, sell, leverage, borrow against, and track pre-IPO positions using tokens backed by real-world holdings—with low fees, no lockups, and instant liquidity—finally making pre-IPO investing efficient and accessible for all.

Come join us in our mission to democratize pre-IPO investing! 🚀

The Dream Team 💫

At prePO, we are building a fully-remote, globally-distributed dream team. Like a professional sports team, we want every player on the field to be a superstar in their position and play extremely effectively with others.

We are also backed by world-class investors (>$4M in funding to date), including Republic Capital, IOSG Ventures, Maven 11, founders from Gnosis, 1inch, Gelato, and many more.

Our Values 💝

At prePO, the following team values describe the people we want to work with (and the people you would want to work with too!):

• Passion: being engaged and enthusiastic about the work, the mission, and making an effective impact on the world.
• Autonomy: being proactive, resourceful, and making decisions in prePO’s best interest.
• Overcommunication: sharing feedback and all relevant information - directly, frequently, clearly and empathetically.
• High Performance: producing high-quality outcomes with speed and consistency, and continuously raising the bar for yourself and others.
• Focus: being laser-focused on high-priority, high-impact tasks that work us towards achieving prePO’s mission.
• Incrementalism: delivering value via incremental iterations.
• Simplicity: seeking out the simplest solutions.
• Innovation: embracing creativity, and leading the industry with forward-thinking ideas.

The Role 💻

prePO is looking for a Senior Frontend Engineer to architect, develop, test, and deploy front-end code for novel DeFi applications.

Candidates should have excellent React proficiency, strong technical leadership, a consistent track record of solving complex engineering problems, and a deep passion for DeFi, crypto and investing.

Our Frontend Tech Stack:

• Core: React, TypeScript, Next.js
• Styling: Tailwind CSS, Radix, shadcn
• Blockchain: Wagmi, Privy
• Tests: Playwright, Vitest w/ React Testing Library
• CI/CD: Vercel, GitHub Actions
• Tooling: Cursor

Skills in DevOps and UI/UX design are a plus.

The Ideal Candidate 🏅

Our ideal candidate will:

• have 5+ years experience as a frontend engineer in engineering-heavy organizations
• write clean, re-usable, reliable and performant React code
• have excellent ‘UI sense’, being able to create beautiful, consistent UI/UX from high-level wireframes
• synchronize smart contract and subgraph data with client-side state
• create functions that write to the blockchain by calling smart contract methods
• extend upon our standard patterns for implementing frontend Web3 functionality
• contribute to high-level decisions about prePO’s front-end architecture
• research new technologies to adopt to improve our product or codebase
• collaborate with product owners, designers, and other developers
• work at an extremely rapid pace with a large amount of ownership and autonomy

Note that we cannot offer visa sponsorships at this time.

Benefits & Perks 🎁

• Fully-remote work with flexible working hours
• Work on the bleeding edge of DeFi and crypto
• Team off-sites and sponsored hackathon trips
• Budget for learning / professional development / subscriptions
• Join a force for good - prePO has made a pledge to dedicate at least 2% of time, product, and profit towards charity

We look forward to your application!

Job Description:

The main objective is to explore the innovation happening in Blockchain technologies and adapt them to business by designing, implementing, and supporting distributed products & Services, through analysis and development of use cases in relation to business solutions’ implementations.

· Design, research, develop, analyze and suggest new concepts as well as strategies.

· Engage stakeholders, clients and partners; internal and external teams to understand product vision, business use cases and design proof-of-concept (POC) and minimal viable products (MVP)

· Own feature implementations and create end-to-end solutions and utilizing libraries / code sources to be used throughout projects implementation

· Be accountable for implementing regulatory minded best practice and processes Interface with communities and contributors to collect and implement feedback across products.

· Develop and implement business services to Og Stack marketplace

· Test various block chain systems and lead technology departments for products,

· Align, understand the technology, and to be able to design and implement jointly core products

· Follow closely with Executive Chairman and Head of Innovation on ideas, discussions and workflows

· Conduct technical training programs, and involve internal Product Dev and Technical Leads

· Manage team members through the process of developing and maintaining solutions.

Education & Qualifications:

· Master’s degree in computer science,

· Bachelor Degree in Computer Engineering or Computer application

Experience:

· 4 - 10 Years employment Experience working with live projects that are being used by customers

· 2. Training skills with Software Development & Testing

· 3. Data, Information & Technology Architecture

System skills required:

· Experience with building smart contracts

· Data and system integration

· Experience with, JavaScript, Node.JS, Hyper ledger, Ethereum, Corda, Ripple, Indy

· Distributed file systems Security

· Regulatory minded development experience

· Skills set in; DevOps Technology, Docker, Kubernetes, GitLab, GitHub, Jenkins.

· Experience in building data blocking networks

· Implemented or contributing to open-source projects

Apply Now:

• Job Title: Web3 Front-End Developer
• Organization: Kromatika DAO
• Location: Fully Remote

About Us

Kromatika DAO is at the forefront of decentralized finance (DeFi), building innovative and cutting-edge tools for the blockchain ecosystem. Our flagship product, a MetaDEX, revolutionizes trading with features like Aggregated Swaps, Gasless Swaps, Fee-Earning Limit Orders, and Perpetual Trading across multiple chains, including Ethereum, Arbitrum, Polygon, Optimism, and Base.

We are looking for an ambitious and highly skilled Web3 Front-End Developer who is passionate about front-end development and committed to the principles of decentralization. If you thrive in fast-paced, collaborative environments and want to shape the future of DeFi, we’d love to hear from you.

Direct applicants only. We are not engaging with recruiters, headhunters, or agencies for this role.

What You’ll Do

• Front-End Development: Architect, refine, and maintain the UI of our multichain DEX, ensuring a seamless, intuitive, and visually polished user experience.
• User Experience: Design and optimize user interface workflows for advanced DeFi features, including aggregated swaps, limit orders, and gasless transactions.
• Performance & Optimization: Enhance front-end performance, ensuring smooth, responsive interactions across different devices and networks.
• Web3 Integration: Implement and interact with smart contracts using tools like Web3.js and Ethers.js.
• Collaboration: Work closely with senior developers, and blockchain engineers to deliver cutting-edge DeFi solutions.

Required Skills & Qualifications

✅ Technical Skills:

• Front-End Development: 1–4 years of experience in front-end development.
• Languages & Frameworks: Proficiency in TypeScript, React, and CSS.
• Web3 Libraries: Basic understanding of Ethers.js, Web3.js, or similar blockchain tools.
• Git & Version Control: Comfortable with Git-based workflows.
• Blockchain Concepts: Familiarity with wallets, transactions, DEX trading, smart contracts, gas fees and etc.
• UI/UX Awareness: Strong eye for aesthetics, usability, and responsive design.

✅ Soft Skills:

• Self-Motivated: Ability to work independently and take ownership of projects.
• Fast Learner: Quick to adapt to new tools, frameworks, and technologies.
• Strong Communication: Ability to collaborate effectively in a remote and distributed team.
• Attention to Detail: Commitment to writing clean, efficient, and maintainable code.

Nice to Have (Optional):

• ✨ Backend Knowledge: Some exposure to Node.js or Solidity for smart contract development.
• ✨ Extended Blockchain Expertise: Deeper understanding of DeFi protocols, tokenomics, and crypto ecosystems.
• ✨ Advanced Uniswap User: Deeper understanding of Uniswap v3 - Concentrated Liquidity, Univ2 and UniV4.

Why Join Kromatika DAO?

• Work at the cutting edge of DeFi innovation in a rapidly evolving ecosystem.
• Be part of a fully decentralized, remote-first organization.
• Collaborate with a team of top-tier blockchain developers.
• Make a meaningful impact on the future of decentralized trading.
• Fully flexible work schedule – Set your own hours and work at your peak productivity.
• Earn incentives in crypto, with bi-weekly payments to ensure financial flexibility.
• An exclusive gateway to immersive, firsthand expertise in the world of DeFi.

Ready to build the next generation of DeFi? Apply now!

Engineering@Easygo Easygo leads the world in crafting top-tier entertainment experiences. Within our engineering organization, we foster a continuous learning environment, constantly pushing the boundaries of large-scale software design and development. Our culture revolves around fostering growth, nurturing learning, and upholding excellence in engineering, ensuring we consistently set the benchmark for engineering mastery. Who are we? At Easygo we proudly stand as a prominent service provider to a powerhouse of brands within the iGaming industry, including Stake.com, Kick.com and Twist Gaming. Stake is the world's largest crypto casino, and leads the industry with a seamless online casino and sportsbook experience. Level up your online entertainment with Kick.com, the vibrant live-streaming platform, which connects millions of gamers and content creators worldwide. All alongside the innovative game design studio, Twist Gaming, which takes creativity to new heights by crafting cutting-edge and captivating games. Why join us? Are you a passionate and ambitious software engineer ready to dive into an environment that fosters innovation, continuous learning, and professional growth? We're seeking talented individuals who are eager to tackle complex problems, build scalable solutions, and collaborate with some of the finest engineers in the entertainment industry.

Complex Projects, Creative Solutions: Dive into intricate projects that challenge and push boundaries. Solve complex technical puzzles and craft scalable solutions. Accelerate Your Growth: Access mentorship, training, and hands-on experiences to level up your skills. Learn from industry experts and gain expertise in scaling software. Collaborate with Industry Leaders: Work alongside exceptional engineers, exchanging ideas and driving innovation forward through collaboration. Caring Culture, Career Development: We deeply care about your career. Our culture prioritizes your growth with tailored learning programs and mentorship. Embrace Challenges, Celebrate Success: Take on challenges, learn from failures, and celebrate achievements together. Shape the Future: Your contributions will shape the future of entertainment.

If you're passionate about growth, innovation, and working with the best, we'd love to have you on our team! Key Responsibilities:

Design and implement scalable, high-performance software solutions in alignment with project requirements and company standards. Optimize existing systems for performance, scalability, and reliability, identifying and resolving bottlenecks and inefficiencies. Actively engage in hands-on coding and development, ensuring code quality, scalability, and maintainability. Identify opportunities for improvement and take initiative in technical discussions Independently lead medium-sized projects or components from start to finish. Collaborate effectively with cross-functional teams, communicating technical concepts and project updates. Provide technical leadership, guiding and mentoring junior engineers in the team. Collaborate with stakeholders, product managers, and engineering teams to effectively communicate technical concepts.

Qualifications:

Bachelor's/Master's degree in Computer Science or equivalent practical experience. 4+ years of hands-on experience in software engineering, with a primary focus on Backend development and leaning toward Full-Stack Experience with Node.js, GraphQL, Docker, Cloud services (e.g., AWS, Azure, Google Cloud) and related technologies. Experience with Database technologies such as PostgreSQL, MySQL, Elasticsearch for data storage and management. Experience with Messaging systems such as NATS, Kafka, RabbitMQ, SQS, etc.. Experience with Monitoring and logging tools (e.g., Datadog) Strong understanding of code architecture and design principles. Excellent problem-solving skills and the ability to thrive in a fast-paced, dynamic environment. Positive attitude and eagerness to learn new technologies to grow as a full-stack engineer.

Preferred Qualifications:

Experience with Svelte + SvelteKit or other server-side rendering frameworks (e.g. React + NextJS, Vue + Nuxt, Quasar, etc) Proficiency in JavaScript fundamentals, Design Patterns, Subscriptions (WebSockets, Pub/Sub), TypeScript, GraphQL, Storybook and related technologies. Experience with CI/CD tools (e.g., AWS Code Pipeline, GitHub Actions) for automating the deployment process.

Apply Now:

SORAMITSU is the developer of and major contributor to the open-source blockchain platform Hyperledger Iroha, which is tailored for enterprise and public-sector use. Hyperledger Iroha, a project of Hyperledger Foundation, part of the Linux Foundation, has a permissions system that is scalable and performant.

Utilizing blockchain, SORAMITSU has developed a digital currency for the National Bank of Cambodia, a CBDC Proof-of-Concept with the Bank of the Lao PDR, a closed-loop payment system for the University of Aizu in Japan, an identity verification system prototype for Bank Central Asia in Indonesia, we were finalists in the Monetary Authority of Singapore CBDC Challenge, and are currently participating in Asia-Pacific's first proof-of-concept test of a cross-border, multi-currency security settlement system using distributed ledger technology with the Asian Development Bank. We have also conducted proof-of-concept tests for several major Japanese enterprises, and are active contributors to open source projects, such as Klaytn, South Korea's leading Layer-1 blockchain, KAGOME, the C++ Polkadot Host implementation, the SORA crypto-economic system, the Polkaswap DEX, and the DeFi wallet, Fearless Wallet

Based on these experiences, SORAMITSU aims to deploy cutting-edge technology on a global level in order to expedite financial inclusion and health, mitigate economic inefficiencies, and contribute to the fulfilment of the Sustainable Development Goals.

You can find out more by visiting our homepage at soramitsu.co.jp or check out our Twitter profile.

We are seeking a highly skilled blockchain developer with deep expertise in blockchain technologies and smart contract development, focusing on Solidity, Ethereum, and various Layer 1 and Layer 2 protocols. This role will involve designing, implementing, and optimizing secure and scalable blockchain solutions.

You will be responsible for:

• Develop, deploy, and maintain secure, efficient, and scalable smart contracts on Ethereum and other blockchain networks.
• Architect decentralized systems and define smart contract standards for new projects and features.
• Lead code reviews and provide mentorship to junior and mid-level developers.Optimize smart contract code for gas efficiency, performance, and security.
• Collaborate with cross-functional teams including frontend developers, product managers, and security experts.Identify and mitigate security risks within smart contracts.
• Stay up-to-date with the latest trends, tools, and best practices in Solidity and blockchain development.
• Perform rigorous testing and auditing of contracts, and ensure all code is secure and bug-free.

Requirements:

• 3+ years working specifically with Solidity and Ethereum-based development.
• Deep understanding of Ethereum's architecture, smart contracts, and related technologies.
• Proficient in Solidity, Web3.js, and Ethers.js.Experience with deploying and interacting with smart contracts on Ethereum, Binance Smart Chain, or other EVM-compatible blockchains.
• Familiarity with common design patterns (e.g., ERC-20, ERC-721, ERC-1155) and decentralized protocols.Expertise in smart contract security practices, including common vulnerabilities (e.g., reentrancy, overflow/underflow, front-running).
• Knowledge of decentralized finance (DeFi) protocols and their smart contract ecosystems.
• Experience with testing frameworks (e.g., Truffle, Hardhat, Foundry).
• Experience with CI/CD pipelines and blockchain-specific deployment strategies.
• Ability to communicate complex technical concepts effectively to both technical and non-technical stakeholders.
• Strong problem-solving, debugging, and optimization skills.
  Preferred:
• Experience in developing for Layer 2 networks or alternative blockchain protocols (e.g., Optimism, Arbitrum, Polygon).
• Familiarity with cross-chain technologies and bridging protocols.
• Experience with smart contract auditing tools like Slither, MythX, and others
• Experience with Polkadot ecosystem (Rust, Substrate)

General Skills:

• Programming Languages: Solidity, JavaScript, Python, with knowledge of Rust considered a plus.
• Blockchain Platforms: Ethereum, Binance Smart Chain, Polygon, Arbitrum, Optimism, etc.
• Frameworks & Libraries: Truffle, Hardhat, Foundry, Web3.js, Ethers.js.
• Security Best Practices: Smart contract auditing, vulnerability mitigation, best practices for gas optimization.
• Collaboration Tools: Git, GitHub/GitLab, JIRA, Slack, etc.
• Soft Skills: Strong communication in English, problem-solving, and analytical thinking.

Additional Requirements:

• Please include a link to your GitHub profile showcasing examples of your code or repositories where you’ve contributed.

What we offer:

• A relaxed remote-first (work from anywhere) work environment with flexible working hours
• A permanent, full-time role with a rapidly growing international team of professionals
• An educational budget to support your continued growth and development
• Opportunities to attend global meetups and conferences for learning and/or speaking engagements
• An opportunity to be a part of an award-winning team designing a better world through decentralized technologies

This is a remote position. Our distributed team is mostly spread across Europe and Asia. Team meetings are held generally during European working hours, and it is expected that you would adapt if necessary and be available accordingly.

If you have the required qualifications and are passionate about the Web3 industry, we encourage you to apply for this exciting opportunity.

SORAMITSU values diversity and is committed to providing equal opportunities for all applicants and employees. Our employment decisions, such as hiring, promotion, discipline, and termination, are based solely on an individual's qualifications, performance, and business needs. We do not discriminate against anyone on the basis of their race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other protected status under federal, state, or local law.

Apply Now:

Pond is pioneering blockchain’s foundational models by leveraging graph deep learning to predict on-chain behaviors and accelerate the development of AI-powered, crypto-native applications. Its solutions target key sectors including DeFi, social networks, trading, MEV, and security, utilizing an innovative, decentralized AI development process.

The technical team brings extensive expertise from leading graph AI companies such as WeChat, TigerGraph, and Yuga Labs. With a remarkable track record of over 40 publications in prestigious journals and conferences—such as IEEE, Nature, Harvard Business Review, ICML, NeurIPS, CVPR, and PNAS—the team is at the forefront of cutting-edge AI research and application.

Our $7.5M seed round is led by Archetype, with participation from Cyber Fund (Lido founder’s fund, which rarely invests directly, backed Solana pre-seed and Ethereum pre-ICO), Coinbase Ventures, Delphi Digital and Anagram (the fund of Solana’s president and former president of Polychain).

We have a 30+ wide range of angels in DeFi, MEV, social, security, and more including the co-founder of Near, the co-founder of ENS, CTO of Exo Labs, co-founders of Plume Network, COO of Matrixport, the Head of Market Research of Flashbots, the founder of Mamori, the founder of SEDA, former GP of Variant—Spencer Noon, the founder of Zerion, the founder of Nuffle, the founder of OpenGradient, and others.

For more:

• Website
• Twitter

The role:

We are seeking a skilled and passionate Smart Contract Engineer to join our innovative blockchain team. The ideal candidate will have proven experience in developing and deploying smart contracts and be deeply familiar with blockchain technologies. As a Blockchain Smart Contract Engineer, your main task is to develop, test, and maintain smart contracts on different blockchains according to business needs.

Key Responsibilities:

• Design, develop, test, and deploy smart contracts on blockchain platforms such as Ethereum, Base, or Solana.
• Collaborate with the development team to create and implement decentralized applications (DApps).
• Write high-quality, secure, and sustainable code for blockchain applications.
• Perform code reviews and provide constructive feedback to peers.
• Maintain and optimize existing blockchain applications and smart contracts.
• Work closely with project managers and other stakeholders to define and achieve project goals.
• Stay updated with the latest blockchain technologies and cryptographic methods.
• Contribute to the architecture and design decisions for blockchain systems.

Required Skills and Qualifications:

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• 2+ years of experience in blockchain development.
• Strong proficiency in Solidity and other smart contract languages.
• Experience with blockchain development frameworks and tools (e.g., Truffle, Hardhat, Remix).
• Understanding of consensus algorithms and blockchain protocols.
• Knowledge of front-end technologies (e.g., HTML, CSS, JavaScript) for DApp integration.
• Experience with version control systems, preferably Git.
• Excellent problem-solving skills and ability to work under pressure.

Preferred Skills:

• Familiar with Solidity language, and preferably have some understanding of Rust.
• Familiarity with off-chain storage solutions and integrations (IPFS, The Graph).
• Understanding of Layer 2 scaling solutions (e.g., Optimism, Arbitrum).
• Contributions to open-source blockchain projects.
• Prior experience in a fintech environment.