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Staff Software Engineer, Backend (Card)

Affirm
Full-time
Remote Spain Full-time Posted Aug 5, 2026

About this role

Job title: Staff Software Engineer, Backend (Card)

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.

We are reinventing credit cards entirely. We are working directly with card issues to change how credit is used throughout the world, creating new types of cards that work for both their everyday lives and large purchases with extremely straightforward, flexible terms. You will be the lead engineer for our EU teams. You will be responsible for architecture across cards and relationships with our EU counterparts. You'll work across stacks and across the company, working both in just-in-time transaction processing that has to take place in milliseconds, along with our ledgering and reconciliation systems in post-transaction processing.

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