Senior Full-Stack Engineer: AI Features & Platform Lead

Navan; United States; On-site; USD 150,000 - 210,000; Full time

Job summary

Navan is seeking a passionate Senior Full-Stack Engineer to lead, design and develop core product features powering our app used by thousands of travelers daily.

You will own AI feature development end-to-end, design scalable backend and frontend systems, and collaborate with product, design, security and SRE teams to deliver high-impact solutions.

The role emphasizes ownership, code quality, and the ability to translate customer needs into reliable, user-friendly experiences.

Qualifications

• 5+ years of professional backend software engineering experience.
• 2+ years frontend with React/TypeScript.
• Hands-on with AI systems and integrating AI agents.
• Experience with microservices, REST/gRPC, and AWS.

Responsibilities

• Own end-to-end AI features from design to deployment.
• Design and evolve core backend and frontend.
• Collaborate with product, design, security, and SRE.
• Advocate clean code, reviews, and architecture consistency.
• Help shape long-term product vision.

Skills

Backend 5y+

Frontend 2y+

AI systems

Microservices

Product mindset

Teamwork

Job description

Navan is seeking a passionate Senior Full-Stack Engineer to lead, design and develop core product features powering our app used by thousands of travelers daily.

You will own AI feature development end-to-end, design scalable backend and frontend systems, and collaborate with product, design, security and SRE teams to deliver high-impact solutions.

The role emphasizes ownership, code quality, and the ability to translate customer needs into reliable, user-friendly experiences.