Sr. Fullstack Engineer

Navan has transformed the corporate travel, payment, and expense landscape by consistently prioritizing user needs. As a Senior Fullstack Engineer in the Flights group, you’ll play an essential part in building and scaling the next-generation flight platform, Navan’s flagship product that drives global business growth. This is a high-scale, complex environment where your work will impact customers worldwide. You’ll solve challenging problems, collaborate with engineers, product managers, and designers across the globe, and contribute to a platform trusted by major enterprises. What You'll Do Build at Scale: Design and develop robust, high-performance features across the entire stack—from intuitive frontend interfaces to the core services that support our global customer base. Solve Complex Problems: Apply deep technical expertise to address large-scale engineering challenges, ensuring seamless data flow between complex backend systems and responsive user interfaces. Deliver End-to-End Solutions: Take full ownership of features—from UI/UX implementation and API design to deployment and operational support—ensuring exceptional quality and value for users. Collaborate Across Teams: Work effectively as part of a global, cross-functional team, partnering with designers to translate wireframes into reality and backend peers to define scalable contracts. Contribute to Engineering Culture: Champion best practices in code quality, frontend performance, scalability, and testing across the full stack, fostering a culture of technical excellence. Learn and Grow: Stay engaged with new technologies and industry trends, bringing a growth mindset and a passion for delivering elegant solutions to complex problems. What We're Looking For 4-6 years of experience building and scaling complex systems in fast-paced, high-growth, or large-scale environments. Strong hands-on experience with modern frontend frameworks (specifically React or Angular ) and a solid backend foundation. Proficiency in Java and Spring Boot , with a solid understanding of JVM performance and optimization. Strong experience with distributed systems, microservices, and RESTful API design, including practical expertise with AWS or other cloud platforms. Experience building consumer-facing products with a focus on web performance, accessibility, and sleek user experiences. A record of delivering production-quality, maintainable code, and supporting features post-release through monitoring and troubleshooting.