Develop and maintain Node.js/Express backend (REST APIs, authentication/authorization, performance optimization).
Design and manage data with MongoDB/Mongoose (schemas, queries, indexing; basic migrations when needed).
Build React/Next.js frontend (SSR/CSR), integrate APIs, manage state with Zustand.
Implement responsive UI using Tailwind CSS following product/UX requirements.
Deliver real-time / data streaming features (preferably via WebSocket/Socket.io).
Support Flutter integration and bug fixing (API integration, business flows, UX improvements).
Work with Git workflows (branches/PRs), conduct code reviews, and maintain API docs and test collections (Bruno/Postman).

1–3+ years of experience (or equivalent personal projects) in web development.
Strong JavaScript (ES6+); TypeScript is a plus.
Hands-on experience with:
- Node.js + Express
- React + Next.js
- MongoDB (preferably Mongoose)
- HTML/CSS, Tailwind CSS
Able to debug end-to-end (UI ↔ API ↔ DB), proactive mindset, good teamwork and communication.
Nice to have: Socket.io/WebSocket, Flutter, Docker, Kubernetes/Helm, Python/AI service integration.

Competitive salary (up to VND 30,000,000/month, based on experience).
Year-end bonus and holiday/Tet incentives according to company policy.
A young, dynamic environment that encourages creativity and career growth.
Ongoing training and development to upskill and stay current with modern technologies.

Junior / Middle Full Stack Developer

Job Description