IT & Software

Backend API Engineer Python Kotlin

Affirm, Inc.

Winnipeg · Manitoba · Canada

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Strengthen Affim’s payment experiences through backend systems, scalable APIs, and Python or Kotlin in a remote-first Canadian role.

As a Software Engineer II, you will design, develop, and launch backend systems and APIs supporting Affim Card experiences. You will translate business scenarios into solutions spanning multiple software components while partnering with Product, Design, and analytics. The work includes operational support for checkout-critical services.

Key Responsibilities:

  • Design and launch backend systems and APIs at scale
  • Break projects into phased deliverables with team support
  • Articulate technical constraints during product development decisions
  • Monitor metrics and escalate availability concerns when needed
  • Support keep-the-lights-on and on-call efforts

Requirements:

  • At least 1.5 years as a software engineer
  • Proficiency in Python or Kotlin for backend development
  • Knowledge of distributed systems, AWS, MySQL, and Kubernetes
  • Experience designing, developing, and launching scalable APIs
  • Strong communication and code review skills

Apply backend engineering, scalable API development, and distributed systems knowledge to reliable Affim checkout capabilities.

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Reference: WJ-4483_1565400 · Posted 12 Nov 2026, 03:28 PM

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