Software Engineer II, Back-end (Card Mgmt & Transaction Processing)

Role Overview

Software Engineer II (Back-end) for Affirm’s Card Management & Transaction Processing systems. You will work on backend infrastructure that directly supports the critical path of card transactions across Affirm Card and one-time virtual cards.

Responsibilities

• Break down larger initiatives into deliverable tasks and ship work in multiple phases with your team
• Collaborate with product management, design, and analytics—helping shape decisions by articulating technical constraints, risks, and trade-offs
• Support operations and reliability by creating and monitoring metrics, escalating when needed, and participating in on-call / “keep the lights on” efforts
• Contribute to team growth by engaging in activities such as participating in the interview process

Requirements

• 1.5+ years of experience as a software engineer
• Experience designing, developing, and launching backend systems
• Proficiency in Python or Kotlin
• Familiarity with distributed systems fundamentals
• Experience with AWS, MySQL, and Kubernetes
• Ability to deliver clear, well-tested, extensible code; navigate and debug in large codebases
• Comfortable providing feedback via code reviews
• Strong written and verbal communication for collaboration with a global engineering team
• Bachelor’s degree (or equivalent practical experience)

Nice to Have

• Not explicitly stated