We are a small tech company working in a regulated fintech environment and specializing in web3 services, including trading, custody, staking, and blockchain-based solutions tailored for traditional financial and web3 clients. As part of a lean tech team, you will have a significant impact on shaping our platform, solving complex problems, and contributing to the evolution of fintech and blockchain technology. Our tech stack is modern and cloud-native, leveraging Reacton the frontend, Node.js on the backend, and a serverless architecture hosted on AWS (S3, CloudFront, ECS Fargate, Lambda, Redis, RDS with PostgreSQL). We integrate with banks, blockchain explorers, and centralized crypto exchanges via APIs and WebSockets, ensuring robust security, performance, and scalability. Role Overview We are looking for a Full Stack Developer with a passion for fintech and web3 technologies. You will work across the entire stack, building features that enhance our business teams and clients' experience while optimizing for security, performance, and scalability. This is a hands-on role that offers the opportunity to shape our architecture and influence strategic decisions in a fast-paced environment. Responsibilities Design, develop, and maintain scalable and secure web applications using React and Node.js. Collaborate closely with a small, agile team to create features that meet user and business needs. Integrate with third-party APIs, blockchain explorers, and crypto exchanges. Optimize applications for performance, scalability, and security in a serverless AWS environment. Implement and maintain CI/CD pipelines for efficient deployment and testing. Monitor and troubleshoot production issues to ensure high availability and reliability. Stay up-to-date with emerging trends in fintech, blockchain, and web development. Requirements 3+ years of professional experience as a Full Stack Developer. Strong proficiency in React, Node.js, and JavaScript/TypeScript. Hands-on experience with AWS services (e.g., Lambda, ECS Fargate, S3, CloudFront, RDS, Redis). Familiarity with containers (Docker), serverless architecture and microservices. Experience with APIs and WebSockets for real-time data processing. Knowledge of PostgreSQL or other relational databases. Understanding of blockchain technology and web3 concepts. Focus on security best practices in web and cloud applications. Strong problem-solving skills and a proactive attitude. A passion for user experience. English fluent Nice-to-Have Skills Experience working with financial systems or regulated industries. Familiarity with authentication protocols like OAuth or JWT. Python Previous experience in performance tuning and high-concurrency applications. What We Offer Opportunity to work in a cutting-edge fintech environment at the intersection of traditional finance and blockchain. A collaborative and growth-oriented culture within a small, agile team. Flexibility to make a tangible impact on the business and technology stack. Work from Home with regular face-to-face working sessions