> Markdown version of [/jobs/ext/4593032-backend-engineer-card-checkout-python-kotlin-remote](https://www.wearedevelopers.com/jobs/ext/4593032-backend-engineer-card-checkout-python-kotlin-remote). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Engineer - Card Checkout (Python/Kotlin) Remote - **Company:** Affirm, Inc. - **Location:** Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Distributed Systems, Python (Programming Language), MySQL, Software Engineering, Backend, Kotlin, Kubernetes - **Published:** November 6, 2026 - **Apply:** https://www.jobleads.com/es/job/backend-engineer-card-checkout-python-kotlin-remote--spain--e24c4ab9c6e5602ddf65fb02368c3a190 ## About the Role You should have 2+ years of software engineering experience, be proficient in Python or Kotlin, and comfortable with distributed systems using AWS, MySQL and Kubernetes. Visa sponsorship available for candidates based in Spain. ## Description Affirm is looking for a Software Engineer to join the Card Checkout team, building scalable backend systems for the Card products. You will collaborate with product, design and analytics to deliver a seamless checkout experience for users and participate in on-call duties. You should have 2+ years of software engineering experience, be proficient in Python or Kotlin, and comfortable with distributed systems using AWS, MySQL and Kubernetes. Visa sponsorship available for candidates based in Spain.