Lead / Senior Fullstack Engineer

• Own architecture and design decisions on the hardest systems in our portfolio
• Write code, prototype, and debug alongside the teams rather than from a distance
• Review the implementations that carry the most risk, and raise the bar through the work itself
• Find where AI pays off, build it properly, and turn what works into something other teams can reuse
• Work with Tech Leads on scalability, performance, reliability, and technical debt
• Evaluate new technology, prototype it, make a call, and write down the reasoning
• Work with clients and non-engineering stakeholders to turn vague problems into technical direction

• 10+ years building and running production software, and still writing code today
• Depth in system design and architecture: scalability, performance, distributed systems, reliability
• A track record of setting technical direction across several teams, or on one large and long-running program
• Quick to find your way around an unfamiliar codebase. Deep in at least one language and comfortable in several
• Hands-on experience with LLM-based systems. Things you have built, not only read about: AI APIs, prompt and context design, and at least one of agents, RAG, or evaluation
• Judgment about when not to build something, when to pay down debt, and when to say no
• The ability to mentor senior engineers and change their minds without formal authority
• Comfort working directly with clients and non-engineering stakeholders
• A habit of following where the field is going

Nice to have

• Production AI systems at scale: evaluation harnesses, guardrails, cost and latency tuning
• Depth in one of our domains: data platforms, cybersecurity, robotics, enterprise systems
• Internal tooling or platform work that made other teams faster
• Open source contributions, conference talks, or technical writing

🏆 Join Vietnam’s Best IT Company - Gradion Vietnam (formerly NFQ Vietnam) was recognized by ITViec for 8 consecutive years, including 2 successive years as the Winner. Work with some of the best minds in the industry and be part of a company that’s redefining how businesses scale through technology.

🌍 Career Growth & Leadership Development - Work closely with our leadership team, gain mentorship from experienced executives, and have direct exposure to high-level strategic decisions. Your growth is limitless, as long as you’re ready to step up, opportunities will always be there for you.

🚀 AI-First Engineering & Strategic Consulting - Our engineering culture integrates AI as a core driver of design, development, and optimization - not an add-on. As a forward-thinking consultancy, we go beyond traditional engineering, combining technical excellence with a strategic mindset to deliver transformative solutions for ambitious businesses.

💰 Competitive Compensation - We believe great talent deserves great rewards. Expect an attractive salary, performance-based bonuses, and a benefits package that reflects your impact. We value talent over salary budgets - exceptional contributions deserve exceptional rewards.

✨ And Many More Benefits to Explore! But most importantly, a healthy work-life balance and an environment where you can thrive professionally and personally. Including:

• Performance bonus of up to 2 months’ salary.
• Performance review twice a year, so your growth is recognized and rewarded.
• Premium healthcare for you, plus an annual health check.
• 15 days of annual leave.
• Full salary during probation.
• Hybrid working for real flexibility.
• Monthly Happy Hour and Community Tech activities.
• Work on global projects as part of an innovation team that shapes ideas for the hi-tech world.
• Diverse training programs to keep you growing.