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Software Engineer II, Backend (Decisions Orchestration)

Affirm - Remote - Remote - posted 2026-10-06

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Salary: USD 146,000 - 225,000 / annual

Affirm is seeking a Backend Software Engineer II to design and build the next generation of its Checkout Platform. You will work on financial products and features that provide accessibility and flexibility to users, designing and implementing APIs and microservice interfaces to manage transactions. The role involves improving system performance and reliability across the purchasing journey. Key Responsibilities: - Work with technical leaders to design forward-looking solutions that solve large open-ended problems beyond the immediate team - Own components of checkout systems and define their long-term health while improving surrounding systems - Collaborate with engineers across the organization to build the next-generation checkout platform - Learn and improve engineering standards, tooling, and processes across the checkout platform Tech Stack: Python, Kotlin, RPC, Redis, MySQL, AWS, GitHub Requirements: - Proven track record of developing, testing, and shipping high-quality software at scale - Strong ownership mentality; ability to work with product and engineering leaders on detailed project definitions and drive technical decisions - Clear communication skills, both verbal and written, with a tendency toward over-communication - Ability to grow with engineers through sharing learnings and providing peer feedback - Customer-centric mentality with empathy for user experience - Bachelor's degree in a related field or equivalent practical experience

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