Senior Software Engineer, Backend (Reliability Platform)

The Role: AI-Augmented Reliability

Affirm is looking for a senior engineer to redefine how they manage system health by building a high-performance reliability platform. This isn't a traditional maintenance role; it's a creative mandate to use AI-assisted development and LLMs to create tools that help engineers navigate and debug complex distributed systems. You will be encouraged to iterate fast—using your intuition and AI tools to ship features quickly while ensuring the platform remains robust and maintainable.

Modern Stack for Prompt-First Engineers

The infrastructure leverages a robust backend of Python, Kotlin, and AWS, managed via Kubernetes. Because the role also involves building intuitive web interfaces with React or Vue, it is an ideal environment for a developer who uses AI to move fluently across the full stack. You will focus on building automated guardrails and AI-driven guidance, making the "vibe" approach a core part of Affirm's engineering culture.

Leadership and Growth

As a technical lead, you will guide your team through architectural ambiguity and mentor others in bridging traditional engineering with modern AI workflows. This is a remote-first position for Canadian residents, offering the chance to own critical platform components and influence the future of AI-driven operations at scale.