Stavros T.

Fintech Backend Dev | Java, Spring Boot, TypeScript, Payments API

Top Rated developer (100% Job Success) with 5+ years building fintech and payments systems. I specialize in Java (Spring Boot), TypeScript, Node.js, and React/React Native, with hands-on experience delivering production-grade financial applications for clients across Europe. Recent fintech work includes: building payment flows with Google Pay and card processing integrations, developing real-time transaction systems using WebSockets, architecting backend microservices for financial data processing, and delivering full-stack features in security-sensitive, compliance-aware environments. I understand fintech isn't just about code — it's about reliability, auditability, and regulatory constraints. I bring a structured approach to every engagement: clear communication, thorough documentation, and production-ready deliverables that hold up under real-world load. Tech stack: Java (Spring Boot), TypeScript, Node.js, React, React Native, PostgreSQL, REST APIs, WebSockets, microservices, Docker. Available for backend, full-stack, and API integration projects. I work well with both early-stage fintech startups and established financial services teams. Let's build something solid.