Software Engineer / Full Stack Developer
Full Stack Developer (2+ years) focused on Node.js & Go, building high-traffic products (3M+ users), payment integrations, and real-time systems with strong attention to performance, security, and UI/UX.
- 🔭 Currently working at Intelin (ST Group) on system operations and ZMP (Zalo Mini App) product development
- 🌱 Interested in high-performance web apps, real-time systems, and DevOps
- 💼 Open to backend/fullstack opportunities (Node.js / Go / React / Next.js)
- 📫 Reach me at: [email protected]
Jul 2022 - Present · Full-time
- Developed and maintained web & mobile apps serving 3M+ users, focusing on performance and reliability
- Designed & optimized RESTful APIs (Node.js) and Go services, improving response time and throughput
- Built responsive React.js & React Native interfaces for consistent cross-platform UX
- Integrated payment gateways: Momo, ZaloPay, VNPay, ...
- Implemented Zalo OA integrations: notifications, chatbot, login & authentication
- Worked with real-time data, JWT/OAuth2, AES encryption, and deployed services on VPS with PM2, Docker, Grafana (99.99% uptime)
Jun 2021 - Sep 2021 · Internship
- Built local branch management system (inventory, orders, payments) with Node.js / NestJS
- Designed RESTful APIs, optimized PostgreSQL queries (~30% DB load reduction)
- Developed UI with React.js + Tailwind CSS, integrated JWT/OAuth2 auth
- Deployed on AWS using Docker & CI/CD
Frontend
- React, Next.js 14, Tailwind CSS, TypeScript
Backend
- Node.js, Go, NestJS, Express.js
- PostgreSQL, MySQL, MongoDB
DevOps & Tools
- Docker, Kubernetes
- Jenkins, CI/CD
- AWS, GCP
- Custos – Network guardian & malicious protection tool (Windows/Linux, Wails + Go)
- Go Zalo Bot SDK – Go SDK for building Zalo bots (auth, message handling, webhooks, rich media)
- AquilaFCM – Lightweight service for Firebase Cloud Messaging, Dockerized for microservices
- VeloQR – High-performance React QR scanner using WebAssembly + Rust
- Snowflake ID Generator – Node.js library for distributed unique IDs (TypeScript, zero deps)
- Check Domain Status Service – Automated daily domain availability checker with notifications
- Portfolio: https://phamvankhang.name.vn
- Blog: https://vkhangstack.io.vn/
- Email: [email protected]
- LinkedIn: https://www.linkedin.com/in/vkhangstack/
- GitHub: https://github.com/vkhangstack