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Software Engineer II, Backend (ML Platform)

Affirm

$142,000 - $210,000
Aug 28, 2025
Remote, US
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Affirm is looking to build the core infrastructure that powers its intelligence, specifically the compute platform for training and serving all of its machine learning models and features.

Requirements

  • 2+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin
  • Experience developing highly available distributed systems using technologies like AWS, MySQL and Kubernetes
  • Proficiency in making significant changes in a large code base
  • Experience with defining a technical plan for the delivery of a significant feature or system component
  • Strong understanding of software development principles and practices
  • Experience with cloud-based technologies and containerization

Responsibilities

  • Designing, developing and launching backend systems at scale
  • Developing highly available distributed systems using technologies like AWS, MySQL and Kubernetes
  • Defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design
  • Writing high quality code that is easily understood and used by others
  • Making significant changes in a large code base, and developing a suite of tools and practices that enable safe changes

Other

  • Leading engineers on your team through ambiguity to solve open-ended problems
  • Collaborating with product management, design & analytics
  • Proactively identifying project, process, technology or business issues, advocating for them, and leading in solving them
  • Fostering a culture of quality and ownership on your team
  • Providing feedback and guidance to team members
  • Bachelor’s degree in a related field or equivalent practical experience
  • Strong verbal and written communication skills