Senior Staff Software Engineer, Backend

Summary

Join Affirm, a company reinventing credit, as a Senior Staff Software Engineer in Identity Engineering. You will define the technical direction, foster innovation, and create scalable, reliable, high-performing solutions. Collaborate with engineering leaders and cross-functional teams to shape best practices and guide architectural choices. Lead the team in defining requirements, vision, and roadmap for the Identity area. Deliver the vision through incremental milestones, mentoring engineers, and advocating for engineering excellence. Navigate ambiguity in complex discussions and deliver multi-year, high-impact projects.

Requirements

• Proven experience delivering multi-year, high-impact projects with broad cross-functional collaboration
• Strong system design and software engineering skills, with the ability to synthesize complex technical and business requirements
• A strong understanding of distributed systems and how architectural decisions affect performance and maintainability
• Excellent written and verbal communication, especially in asynchronous formats (RFCs, design docs, project plans)
• Passion for working with cross-functional teams including Product, Analytics, and Business teams
• This position requires either equivalent practical experience or a Bachelor’s degree in a related field

Responsibilities

• Define the multi-year, multi-team technical strategy and deliver it through direct implementation and broad technical leadership
• Architect and build the next-generation Identity services, ensuring high availability and low latency to support Affirm’s financial products
• Influence and align with cross-functional leaders across the organization, guided by deep domain context and engineering expertise
• Mentor engineers and advocate for engineering excellence, influencing best practices across teams
• Navigate ambiguity, bringing clarity to complex engineering, product, and business discussions

Preferred Qualifications

• Kotlin development experience is a plus
• Excited about Affirm’s mission to deliver honest financial products

Benefits

• Health care coverage - Affirm covers all premiums for all levels of coverage for you and your dependents
• Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
• Time off - competitive vacation and holiday schedules allowing you to take time off to rest and recharge
• ESPP - An employee stock purchase plan enabling you to buy shares of Affirm at a discount