Bùi T.

Java Spring Boot & React/TypeScript developer — I build REST APIs, admin dashboards and web apps, and I fix bugs in existing codebases fast. 3 years of production experience on a large e-commerce platform embedded in 20+ banking apps. SERVICES I OFFER ✅ Bug fixing & debugging — Java/Spring Boot backends, React/TypeScript frontends ✅ REST API development — new endpoints, CRUD, authentication, PostgreSQL database design ✅ Admin dashboards & back-office tools — React, TypeScript, React Admin, data tables, forms ✅ Third-party API integration — shipping, payment, partner APIs, webhooks ✅ Security fixes — XSS and common web vulnerabilities ✅ Code refactoring & maintenance of legacy projects ✅ Docker setup and RabbitMQ message queues for microservices WHAT I'VE DONE ✅ 540+ commits across 23 repositories in a Spring Boot microservices system (RabbitMQ, PostgreSQL, Docker) ✅ Delivered an automated shipping-assignment feature with a carrier API integration, plus a commission management module — 100 merged merge requests in 2 months ✅ Contributed to a partner Open API and to security fixes (XSS) on a platform serving 20+ banking apps ✅ 2 years building a React/TypeScript admin platform for a transport & ticketing system TECH STACK Java • Spring Boot • Microservices • PostgreSQL • RabbitMQ • Docker • React • TypeScript • JavaScript • React Admin • REST APIs • Git HOW I WORK • Clear updates in English, daily if you want • Small, tested changes — I don't break what already works • GMT+7, flexible hours to overlap with your timezone Send me your bug report or project idea — I'll reply within 24 hours with what needs to be done and how long it will take.