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Senior Software Engineer, Backend (Identity Data)

Affirm - Remote - Remote - posted 2026-10-20

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Salary: USD 173,000 - 255,000 / annual

At Affirm, you'll join the Identity Engineering team, which owns the systems responsible for onboarding all consumers and managing their authentication and verification journeys across Affirm's product surfaces. This is a high-impact role focused on building and maintaining high-availability, low-latency systems on critical paths for all of Affirm's products. You will be responsible for owning and delivering quarterly goals for your team, leading engineers through ambiguity to solve open-ended problems, and ensuring everyone is supported throughout delivery. You'll collaborate closely with product management, design, and analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs. Key responsibilities include proactively identifying project, process, technology, or business issues and leading solutions; supporting operations and availability of your team's systems by creating and monitoring metrics, escalating when needed, and supporting on-call efforts; fostering a culture of quality and ownership by setting or improving code review and design standards; and developing talent on your team through feedback, guidance, and leading by example. Affirm is a remote-first company with flexibility built in. Most roles can be done from almost anywhere within the US. New hires will be invited to attend an in-person onboarding experience. Benefits include 100% subsidized medical, dental, and vision coverage for you and dependents; monthly stipends for health, wellness, and tech spending; flexible time off; and an employee stock purchase plan. REQUIREMENTS: - 4+ years of experience designing, developing, and launching backend systems at scale using languages like Python or Kotlin - Track record of developing highly available distributed systems using technologies like AWS, MySQL, and Kubernetes - Experience defining technical plans for significant features or system components with elegant, simple, and extensible designs; ability to write high-quality code easily understood and used by others - Proficiency at making significant changes in large codebases; developed tools and practices enabling safe changes - Demonstrated ownership of your growth, proactively seeking feedback from team, manager, and stakeholders - Strong verbal and written communication skills supporting effective collaboration with global engineering teams - Bachelor's degree in a related field or equivalent practical experience

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