Software Engineer II, Backend (Merchant & Partner Lifecycle)

About the role

The Merchant & Partner Lifecycle (M&PL) team is transforming Affirm’s architecture to address critical risks and consolidate merchant lifecycle orchestration. You will lead the development of a new lifecycle-orchestrator service that integrates with multiple systems.

Responsibilities

• Design and expand the backbone of our platform to scale to hundreds of thousands of merchants worldwide
• Align the scope of work with other teams to deliver cross-team projects
• Execute the long-term vision of the team by implementing technical strategies for broad or complex requirements
• Utilize agentic development tools like Claude Code to automate parts of the development process
• Improve engineering standards, tooling, and processes throughout the organization

Requirements

• 3+ years of experience as a backend software engineer
• Familiarity with Domain-Driven Design, distributed systems, and how architectural decisions affect performance and maintainability
• Experience with data models, API design, state machines, event-driven architecture, and database design
• Excellent communication skills, both written and verbal
• Proficiency in asynchronous communication—written tech specs, ADRs, project plans, etc.
• Experience designing, developing, and launching backend systems (our stack: AWS, gRPC, Snowflake, Kotlin, Python, MySQL, Kubernetes)
• Java and Kotlin experience are especially helpful
• Prior experience with monitoring and alerting systems (sentry.io, rollbar, chronosphere, kibana)

Qualifications

• Equivalent practical experience or a Bachelor’s degree in a related field

Skills

• Agentic development tools
• Backend system design
• Communication skills
• Data modeling
• Distributed systems
• Event-driven architecture
• Monitoring and alerting systems
• Project management
• Software development
• Technical leadership

Benefits

• Health care coverage
• Flexible Spending Wallets
• Competitive vacation and holiday schedules
• Employee stock purchase plan
• Subsidized medical coverage, dental, and vision for you and your dependents
• ESPP

Pay

• Base Pay Grade - L
• Equity Grade - 6

Schedule

• Remote-first