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Senior Backend Engineer - Infrastructure at Affirm

Company: Affirm

Location: oshawa, London

Posted: June 14, 2026

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Position Details

Join Affirm as a Senior Backend Engineer focusing on Infrastructure, where you’ll enhance security and system performance in a remote-first setup.
The Senior Backend Engineer will play a key role within Affirm's Trust Infra team. You should bring over 4 years of experience in backend design and development with strong knowledge of Kubernetes and cloud systems. This role emphasizes collaboration, technical leadership, and improving the developer experience through automated security measures and metrics tracking.
Key Responsibilities:
• Lead your team through complex technical challenges
• Collaborate with stakeholders on development processes
• Develop and monitor metrics for system operations
• Advocate for quality code review and design standards
• Mentor junior engineers and foster professional growth
Requirements:
• 4+ years in backend systems development and launching
• Proficiency in Python, Kotlin, AWS, Istio, and Kubernetes
• Strong track record...