Senior Software Engineer, Backend (Comms Platform)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.

Identity International is a newly established team created to accelerate Affirm’s international expansion - one of the company’s top priorities. Our vision is to become a trusted, self-sufficient team that drives customer identity capabilities end-to-end across international markets.

The team’s scope includes building and expanding Identity Data Management, Verification, and Decisioning capabilities for Europe, evaluating and integrating third-party KYC vendors, and ensuring alignment with global platform and operational standards. We operate at the intersection of technical depth, regulatory complexity, and cross-geo collaboration, making this an exciting opportunity for engineers who want to shape one of Affirm’s foundational processes.

By joining the team, you will directly influence how Affirm operates Identity in international markets - a challenge that is critical for both business growth and customer trust.

• 5+ years of experience designing, developing, and launching backend systems at scale using languages like Python or Kotlin.
• Track record of developing highly available distributed systems using AWS, MySQL, and Kubernetes.
• Experience defining a technical plan for significant feature or system component delivery with elegant, simple, and extensible design.
• Ability to write high quality code that is easily understood and used by others.
• Proficient at making significant changes in a large code base and developing tools and practices to do so safely.
• Ownership of personal growth, proactively seeking feedback from team, manager, and stakeholders.
• Strong verbal and written communication skills for effective collaboration with a global engineering team.
• Equivalent practical experience or a Bachelor’s degree in a related field.

• Own and deliver quarterly goals for your team.
• Lead engineers through ambiguity to solve open-ended problems.
• Ensure support for everyone throughout delivery.
• Collaborate with product management, design, and analytics in the product development lifecycle.
• Participate in ideation, articulate technical constraints, and partner on decisions considering risks and trade-offs.
• Proactively identify and lead in solving project, process, technology, or business issues.
• Support operations and availability of team artifacts by creating and monitoring metrics.
• Escalate issues when needed and support "keep the lights on" and on-call efforts.
• Foster a culture of quality and ownership by setting or improving code review and design standards.
• Advocate for quality standards beyond your team through writing and tech talks.
• Provide feedback and guidance to develop talent on your team and lead by example.