WEX is transforming into a data-driven enterprise through its modern Data-as-a-Service (DaaS) platform. At the core of this strategy is a need for world-class technical leadership-engineers who can see across domains, design foundational systems, and set the architectural direction for years to come. As a Principal Staff Software Engineer, you will play a pivotal role in shaping WEX's DaaS platform end-to-end. You will drive the unification of data acquisition, semantic modeling, and data products, ensuring they operate together as a coherent, scalable, and trusted foundation for analytics, AI, and customer-facing experiences. This is not just a technical role-it is a platform architect and multiplier role, where you'll be responsible for defining cross-cutting patterns, guiding teams across domains, and raising the technical bar across WEX's data ecosystem. If you're motivated by solving platform problems at global scale, influencing enterprise direction, and leaving behind systems that endure, this is your role.