Senior Backend Engineer - Ledger-Scale FinTech

Affirm is seeking a Senior Backend Architect to set technical strategy for a high-scale ledger platform. You will collaborate with product, design, and analytics to ensure sustainability, manage risks, and drive critical features across this remote-first team. With 8+ years in backend systems and experience in AWS, MySQL, Spark, and Kubernetes, you will own operations, write high-quality code, and guide others. This role emphasizes ownership, architecture, and cross-team impact.