Senior Fullstack Engineer

We‘re looking for a Senior Fullstack Engineer with a strong Computer Science foundation who can own the full product lifecycle — from system architecture to end-user experience. You‘ll help build real-world web and AI-powered platforms, tackling hard problems around performance, scalability, and reliability.

What You‘ll Do:

Design, build, and operate end-to-end fullstack features (frontend, backend, database, deployment).
Make sound architectural decisions and technical trade-offs grounded in core CS principles.
Uphold code quality through reviews, testing, and clear technical documentation.
Optimize system performance (frontend rendering, API latency, queries, caching).
Collaborate with product, design, and fellow engineers; mentor junior team members.

TECHNICAL REQUIREMENTS

5+ years of software engineering experience, including hands-on fullstack work.
Strong Computer Science fundamentals: data structures & algorithms, database internals, networking, concurrency, and system design.
Frontend: proficient in React and Next.js (SSR/SSG/ISR, App Router, state management, performance tuning).
Backend: strong in at least one production stack. We prefer NestJS/Node.js, Python, or Rust, but are open to any technology if your fundamentals are solid.
Solid experience designing RESTful/GraphQL APIs, working with SQL & NoSQL databases, and applying common architectural patterns.
Comfortable with Git, CI/CD, containerization (Docker), and cloud environments.
Clear technical communication in English (Vietnamese a plus).

Nice to Have

Experience with microservices and message queues (Kafka, RabbitMQ, Redis).
Practical experience applying AI in real products — integrating LLMs, building RAG pipelines, or working with vector databases.
Proficiency using AI-assisted development tools (e.g. Claude Code, Copilot, Cursor) to boost engineering productivity.
Experience with 3D web (Three.js/React Three Fiber) or realtime/WebSocket systems.
Open-source contributions or personal projects that demonstrate technical depth.
Experience mentoring or leading a small team.

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Unique benefits:

Social insurance coverage upon signing your employment contract.
Generous leave policy: 12 annual leave days plus all Vietnamese public holidays.
13th-month salary (applicable from the probationary period).
Company-provided equipment.
Well-stocked pantry: tea, coffee, snacks, microwave, etc.
Engaging company activities: Company trips, team-building events, regular internal events (including live music performances!), and access to company-sponsored badminton courts.

Senior Fullstack Engineer

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TECHNICAL REQUIREMENTS

Nice to Have

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