Staff Software Engineer, Fullstack (Auth Experiences)

Affirm·Remote Canada·Remote·Posted 12 November 2026

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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. The Auth Experiences team is looking for a passionate Staff Software Engineer to help set technical direction and build the next generation of web and mobile experiences for Affirm customers. Auth Experiences owns key moments in Affirm’s checkout flow, allowing customers to access Affirm's services, while ensuring that fraud is kept to a minimum. Our systems power critical consumer journeys across thousands of merchants and multiple countries. We manage web and mobile experiences, building User Interfaces, as well as backend orchestration layers. We focus heavily on ensuring a great customer experience with high conversion and security. As a staff engineer, you will lead significant technical initiatives, drive the architecture and evolution of the product, and mentor the team to build highly reliable software. What You'll Do · You will be responsible for setting technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects. · You…

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