About Engine

At Engine, we’re transforming business travel into something personalized, rewarding, and simple. For too long, managing travel and spend has been overwhelming and fragmented—we’re here to change that. We believe the future of travel should be seamless and powered by technology that delights customers at every step. That’s why we’re building a platform that brings together corporate travel, a powerful charge card, and modern spend management in one place.

About the Role

We’re looking for a Senior Software Engineer to join our Admin & Travel Policy team—the group that powers the configuration layer B2B admins use to run their travel programs. You’ll drive our migration from a Ruby on Rails monolith (Nexus) to TypeScript microservices. It’s high‑ownership work that impacts cards, flights, hotels, and bookings, requiring close collaboration across verticals and system‑wide architecture. You’ll also help close a real gap in A/B testing and eve...