I developed a chip-equipped driving test booking system for a client using NestJS, Next.js 15, Prisma, and PostgreSQL. I implemented real-time slot locking with Redis and Socket.io to prevent double-bookings and race conditions.
At VNA International Technology JSC, I developed a labor safety reporting system that reduced manual reporting time by 30%. I also built RESTful APIs, file-processing workflows, and automated email notifications.
I'm currently maintaining and expanding an affiliate and cashback system co-developed with a Software Engineer. Its features include a cashback pipeline, Telegram and Zalo chatbot integrations, and a custom Chrome Extension.
I also developed real-time multiplayer games and an esports tournament platform, working with React, Node.js, Socket.io, Redis, and PostgreSQL. My projects include automated tournament brackets, synchronized gameplay, and containerized deployments with CI/CD.

