Staff Software Engineer, Backend (Cost Engineering)

You write and ship real features alongside a team, bugs, interfaces, working product.

📋About the Role

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 owns cost visibility and optimization across Affirm's cloud and AI infrastructure. We're the team that tells the business what it's spending, why it's changing, and what to do about it — from AWS resource wast…