Senior Software Engineer, Fullstack (Card Acquisition)

<div class="content-intro"><p>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.</p></div><p>Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.</p> <p>&nbsp;</p> <p>Affirm is seeking a Senior Full Stack Software Engineer to join the Acquisition &amp; Onboarding team within the Consumer org. This is a high-impact leadership role for an engineer who can set technical direction, drive architectural decisions, and elevate the quality and velocity of full stack development across mobile, web, and backend systems. The team plays a critical role in shaping the first experience customers have with Affirm—building trust, clarity, and value from the very first interaction. As a Senior Engineer, you will be responsible for defining long-term technical strategy, mentoring senior engineers, and acting as a force multiplier through your technical depth, operational excellence, and ability to navigate ambiguity. You'll work at the intersection of product, design, and engineering to build polished, performant, and accessible user experiences that directly impact conversion, retention, and business growth.</p> <p><strong>What You'll Do</strong><br>&nbsp;</p> <ul> <li>You will be responsible for owning and delivering quarterly goals for your team,