Build AI platform services at Affirm using Python or Kotlin, designing reliable backend systems for production workloads at scale. Work remotely within your home country. As a Senior Backend Software Engineer, you will own technical decisions across the AI Platform team. You will build governed interfaces for models, tools, and agents while supporting identity, reliability, security, and cost attribution. The work spans gateway, runtime, and evaluation services. Key Responsibilities:
Plan and own AI Platform projects from design through on-call Build gateway, runtime, and evaluation services Implement identity, quota, routing, caching, and failover controls Monitor systems through metrics, alerting, runbooks, and on-call Mentor engineers and improve design, coding, and testing practices Requirements:
Four-plus years designing backend systems at scale Production experience with LLMs, agents, or AI frameworks Proficiency making significant changes in large codebases Experience with AWS, MySQL, and Kubernetes Bachelor’s degree or equivalent practical experience Apply backend engineering, AI workload, and distributed systems expertise to Affirm’s governed AI Platform infrastructure.
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Senior AI Platform Backend Engineer employer: Affirm
At Affirm, we pride ourselves on being a remote-first employer that values flexibility and inclusivity, allowing our Machine Learning Engineers to thrive in a supportive environment. With comprehensive health coverage, generous time-off policies, and opportunities for professional growth, we empower our employees to take ownership of their careers while contributing to meaningful projects that redefine credit. Join us in a culture that prioritizes transparency and collaboration, where your contributions directly impact the future of financial technology.
