Fraud Strategy Decision Scientist

Navan is expanding its Fraud Risk Management organization to build world-class fraud prevention and detection capabilities across our travel and expense platforms. We are seeking a Fraud Strategy Decision Scientist to lead data-driven fraud strategy initiatives focused on machine learning features, rules development, and scalable fraud controls.

This role is ideal for a Fraud Strategy Decision Scientist who blends strong data science intuition with practical fraud rule design, understands how models and rules work together in production, and can partner deeply with Product, Engineering, and Fraud Operations to reduce fraud losses while enabling business growth.

You will play a critical role in shaping Navan’s end-to-end fraud strategy, translating advanced analytics and ML outputs into actionable rules, thresholds, workflows, and policy decisions across expense card issuing, payments, onboarding, and travel fraud.

What You’ll Do

• Own and drive fraud strategy for key risk areas across travel and expense, balancing fraud loss reduction with customer experience.
• Design and evolve fraud rules, thresholds,