Senior Software Engineer, Back-end (Fraud)

Backend engineering on real-time fraud decisioning at a buy-now-pay-later lender, extending its decisioning system beyond the US into Canada, the UK and Australia and building the platform that makes each new market a repeatable setup rather than a bespoke one. Python or Kotlin, remote from Spain. The posting is unusually direct about method: every engineer builds with tools like Claude Code, most pull requests are co-authored with AI, and fluency in directing it and owning the result is a stated core expectation.