Senior Software Engineer, Backend (Test Enablers)

Design and build scalable test-enabling platform capabilities—synthetic identities, test data seeding, mocking, deterministic validation workflows, and load testing—to help teams validate changes earlier and reduce expensive end-to-end reliance. Improve reliability and observability of the testing infrastructure used across Affirm, including dashboards, SLOs, alerts, runbooks, and incident readiness. Partner with product engineering and infrastructure teams, lead technical projects end-to-end, and mentor others.