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Senior Software Engineer, Backend (Fraud Decisioning)

📍 Location
canada
⏰ Job Type
Full-time
📅 Posted
March 23, 2026

About the Role

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.

We are looking for a Senior Software Engineer to lead projects and initiatives on the Fraud Decisioning team. You’ll be responsible for building tools and systems that empower Affirm fraud fighting capabilities, work with cross-functional teams to adopt and monitor those and use analytics and data driven decisions to further improve the performance and quality of fraud deciders. Our mission is to drive growth while protecting Affirm, buyers, and merchants. We achieve this by leveraging data to evaluate risk at critical points in the user journey, adapting to the ever-changing fraud landscape, and by introducing new fraud-fighting capabilities..

What You’ll Do

  • Work across the org to plan and execute large, cross-functional initiatives, including: project definition, technic...
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