Senior Software Engineer, Backend (ML Feature Platform)
Affirm · Remote US
About this role
**Senior Software Engineer, Backend (ML Feature Platform) — Affirm** ## About Affirm At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. ## Engineering team The Engineering team builds systems that power Affirm’s mission—reliable, performant, and scalable solutions that touch every part of the business. ## About the team: ML Feature Platform ML Feature Platform is one of two teams that compose the ML Platform at Affirm (the other is ML Training & Serving Platform). Together, they create the ML + Data flywheel that empowers Affirm. **Mission:** Grow Affirm’s business by building a delightful, self-serve platform for developing and serving data for machine learning and decisioning. As the feature platform team, you’ll own multiple artifacts that collectively cover end-to-end feature flows, including: - Feature creation, exploration, and serving - Data storage, availability, and visibility - Offline backfilling infrastructure and platform improvements Your work will directly impact the everyday capabilities for MLEs, Analysts, and decisioning teams. As a primary data source for ML and online decisioning, platform performance is critical to Affirm’s availability and latency goals. ## What you’ll do - Own and deliver quarterly goals; lead engineers through ambiguity to solve open-ended problems. - Collaborate with product management, design, and analytics—participate in ideation, articulate technical constraints, and partner on decisions considering risks and trade-offs. - Proactively identify project, process, technology, or business issues; advocate and lead solutions. - Support operations and availability: create/monitor metrics, escalate when needed, and support “keep the lights on” on-call. - Foster quality and ownership: set/improve code review and design standards; advocate beyond your team through writing and tech talks. - Help develop talent through feedback, guidance, and leading by example. ## What we look for - 4+ years designing, developing, and launching backend systems at scale (e.g., Python or Kotlin). - Track record building highly available distributed systems (e.g., AWS, MySQL, Kubernetes). - Experience defining technical plans for significant features/systems with elegant, simple, extensible design; write high-quality code others can easily understand and use. - Ability to make significant changes in a large codebase with tools/practices that enable safe iteration. - Demonstrated ownership of growth—proactively seeking feedback from your team, manager, and stakeholders. - Strong verbal and written communication skills for collaboration with a global engineering team. - Requires either equivalent practical experience or a Bachelor’s degree in a related field. ## Compensation & location - Base Pay Grade: **N** - Equity Grade: **9** - USA base pay range (CA, WA, NY, NJ, CT): **$195,000 – $225,000** / year - USA base pay range (all other U.S. states): **$173,000 – $233,000** / year - **#LI-Remote** ## Remote-first & benefits - Remote-first with flexibility: most roles can be done from within the country of employment; some may require occasional in-person work or onboarding. - Highlights include: 100% subsidized medical coverage, spending stipends, flexible time off, and an ESPP (employee stock purchase plan). *Affirm is committed to an inclusive interview process and accommodations for can
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