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Affirm
Senior Software Engineer, Backend (AI Platform)
Remote · Canada · Full time · Senior level
$109k–$152k / year
About the role
Build and own backend AI platform services for scalable, secure AI workloads at Affirm. Lead design, launch, and operational health of AI infrastructure components.
What you’ll do
• Plan and own technical projects from design to launch and on-call. • Build gateway, runtime, and evaluation services for AI workloads. • Implement identity, quota, routing, caching, and failover controls. • Partner with security and infrastructure teams on AI workload guardrails. • Create metrics and own operational health including monitoring and alerting.
What you’ll bring
• 4+ years backend development with Python or Kotlin. • Experience with distributed systems using AWS, MySQL, Kubernetes. • Practical experience with LLMs, agents, or AI frameworks in production. • Ability to design elegant, extensible technical plans and write high quality code. • Strong communication skills and proactive ownership of growth.
Life at Affirm
Remote-first with flexibility and in-person onboarding. Benefits include 100% subsidized medical, dental, vision, monthly stipends, flexible time off, and employee stock purchase plan.
About Affirm
Affirm provides clear, predictable payment solutions with no hidden fees, focusing on transparent financial products and infrastructure.