Sr. Backend Software Engineer, Fraud Risk Platform

Job description

Navan is seeking a Sr. Backend Software Engineer to join our Fraud Strategy team and help build a scalable, extensible risk platform to mitigate fraud across our Travel business. This engineer will be embedded within the business unit and will partner directly with data scientists and fraud strategy leads to create robust, real-time fraud mitigation solutions that protect both Navan and its customers. You will lead the design and development of risk-centric services spanning onboarding, booking, and post-booking activities such as chargebacks and dispute management. Your work will power real-time decision engines, including third-party vendor integrations, feedback loops into machine learning models, and manual review tools that close the fraud detection and prevention lifecycle. This hands-on role requires strong technical depth, the ability to operate independently, and a collaborative mindset to translate business needs into high-reliability applications running at scale in the cloud. What You’ll Do: - Architect and build extensible and scalable microservices to support real-time fraud detection and mitigation across the onboarding and booking flows for the travel customers. - W...