Principal Engineer

JOB DESCRIPTION Our Purpose Title and Summary Principal EngineerOverview In the milliseconds between when a card is swiped and an approval is returned, Authorization Decisioning delivers more than 20 market-facing services—including industry leading fraud detection—at global scale. Every day, our platforms apply advanced computational intelligence to billions of transactions worldwide, forming part of the critical financial infrastructure for multiple nation states. As a Principal Software Engineer, you are a technical authority and wayfinder. You provide broad technical leadership across engineering, architecture, product, and operations, shaping the evolution of a highly available, high throughput, globally distributed platform. You are hands-on and influential—experimenting, building, m