Affirm
Senior Software Engineer, Back-end (Fraud)
Europe
UTC+1 $32k to $132k per year Full time
Senior
- Where you can live
- Remote Poland ยท Remote Spain
- Working hours
- Overlap with UTC+1
- Salary
- USD 32,000 to 48,000 per year
- Posted
- July 20, 2026
Summary from the posting
- You will own and deliver quarterly goals for your team, leading engineers through ambiguity to solve open-ended problems, and ensuring that everyone is supported throughout delivery.
- You will design and implement real-time fraud decisioning services and APIs in Python or Kotlin, extending Affirm's Fraud Decisioning System to markets beyond the US.
- You will build and evolve the platform and tooling that let Affirm launch fraud decisioning in a new country quickly, turning market-by-market setup (rules, models, and vendor configuration) into a repeatable, low-friction path so launches scale sub-linearly with the number of markets.
This is a short summary. The full description, requirements and the application form are on Affirm's own career page.