About Role

Navan has transformed the corporate travel, payment, and expense landscape by consistently prioritizing user needs. As a Senior Full Stack Engineer, you’ll help build the next generation of our data-driven platform that powers global business travel and expense management. Our team owns the systems that integrate data at scale, deliver reporting capabilities, and connect seamlessly across multiple lines of business.

This is a high-impact leadership role where you’ll work on mission-critical systems, from intuitive user interfaces to the backend services that process large volumes of data. You’ll collaborate closely with a talented team of engineers, product managers, and designers to identify customer needs and build innovative, scalable solutions to solve them.

What You’ll Do

• Design, Build, and Evolve: Design, build, and evolve the core backend and frontend of our platform, ensuring our services are scalable, reliable, and maintainable.
• Build Data-Driven Services: Build scalable APIs and data services that manage high volumes of data, power reporting features, and enable seamless integrations.
• Own Features End-to-End: Take technical ownership of a problem domain, facilitating the design, development, and launch of key features and microservices that have a direct impact on our users.
• Collaborate Across Teams: Work cross-functionally with various engineering, product, and design teams to deliver complex, cross-domain features in a collaborative environment.
• Drive the Vision: Partner with engineering and product leadership to identify, plan, and execute the long-term technical vision for your domain and be a subject matter expert.
• Champion Best Practices: Contribute to a culture of technical excellence by writing high-quality, well-tested code, mentoring other engineers, and advocating for best practices in testing, monitoring, and operational reliability.

What We’re Looking For

• 5+ years of experience in software development, building systems for SaaS products or consumer-facing web applications in a fast-paced environment.
• Proven experience with backend development using Java and Spring Boot, with hands-on experience with databases (SQL and/or NoSQL), data modeling, and query optimization.
• At least 2 years of hands-on experience in frontend development using modern frameworks like Angular, React, or Vue, along with TypeScript.
• Experience designing and implementing scalable applications using microservices, distributed systems, and event-driven architectures on cloud platforms like AWS.
• Demonstrated experience with and a strong passion for web accessibility (A11y) and localization (l10n) best practices to serve a global user base.
• Demonstrates strong ownership and a collaborative mindset, with clear communication skills and a proven ability to ship production-quality code equipped with robust testing, monitoring, and documentation.
• A passion for investigating and solving challenging problems and a willingness to learn and utilize new tools and technologies.
• Ability to effectively leverage AI development tools (such as GitHub Copilot, CodeGPT, Claude, and Cursor) to accelerate development and innovate on engineering workflows while maintaining high standards for code quality.
• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field—or equivalent hands-on experience.

Bonus Points For

• Familiarity with data pipelines, reporting systems, or travel industry concepts (e.g., bookings, inventory, integrations).
• Experience working with design systems or contributing to shared UI component libraries.