Senior Software Engineer, Backend

Responsibilities

• Own technical decisions and projects from design through launch and on-call operation.
• Design and build scalable gateway, runtime, evaluation, and observability services for AI workloads.
• Develop identity, quota, routing, caching, failover, cost attribution, and governance controls.
• Partner with security, infrastructure, and product engineering teams on agentic-workload guardrails and tool-access identity.
• Create system metrics, monitoring, alerting, runbooks, and operational health practices.
• Improve code review and design standards, communicate through technical writing and talks, and mentor engineers.

Requirements

• 4+ years of experience designing, developing, and launching backend systems at scale.
• Experience building highly available distributed systems with technologies such as Python or Kotlin, AWS, MySQL, and Kubernetes.
• Production experience with LLMs, agents, AI frameworks, inference APIs, LLM gateways, MCP, tool calling, evaluations, or agent runtimes.
• Experience defining technical plans and delivering significant, elegant, simple, and extensible system components.
• Ability to make significant changes safely in large codebases and write high-quality, understandable code.
• Strong collaboration, verbal communication, written communication, ownership, and feedback-seeking skills.
• Bachelor’s degree in a related field or equivalent practical experience.

Benefits

• Remote-first work arrangement, limited to candidates residing in specified Canadian provinces, with occasional in-person work and an in-person onboarding experience.
• 100% subsidized medical, dental, and vision coverage for employees and dependents.
• Monthly technology, health, and wellness spending stipends.
• Flexible time off and generous holiday calendars.
• Employee stock purchase plan with discounted Affirm stock.
• Inclusive interview accommodations for candidates with disabilities.