Senior Backend Software Engineer (Card Loan Platform)

About this role

• As Affirm experiences explosive growth, our team’s contributions are a key enabler
• This isn’t just another backend role; you’ll be building the “financial brain” for our flagship card products, with your work on the critical path for every single swipe
• We’re tackling a unique, high-stakes distributed systems challenge that demands exceptional correctness and massive scale
• You will partner closely with product, data science, and engineering teams to design and build the future of our industry-leading money movement platform
• If you are passionate about making foundational design decisions and building a beloved, lasting financial brand—come join us
• It’s going to be an amazing ride!
• Drive technical strategy by leading the planning, prioritization, and execution of projects, ensuring alignment with product, technical, and business goals
• Lead the end-to-end system design and development of large-scale, high-availability services. This includes building robust APIs and data models for our micro-service and event-driven architectures
• Collaborate across functions with partners in Product, Analytics, Design, Legal, and Accounting and to define requirements and execute our card loan attribution and lifecycle strategy
• Ensure system health and performance by analyzing and troubleshooting complex technical issues, optimizing existing code, and driving solutions that focus on long-term robustness and scalability
• Mentor and grow the team by guiding junior engineers, leading technical discussions and design reviews, and championing best practices through code review

### Benefits

• Compensation: We have a simple, flexible, and transparent remote-first compensation structure so you can make the best decisions for yourself and your family
• Spending Wallets: Access tech, food, lifestyle, and family planning wallets for your expenses
• Supportive Communities: Get involved with our employee resource groups and community groups
• Remote-first Workforce: If your ro...