Software Engineer II, Backend (Merchant & Partner Lifecycle)

About the role

The Merchant & Partner Lifecycle (M&PL) team at Affirm is transforming the company's architecture by consolidating merchant lifecycle orchestration into a unified domain. 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 support hundreds of thousands of merchants worldwide
• Collaborate with other teams to define and execute cross-team projects
• Execute technical strategies for broad or complex requirements, focusing on long-term vision
• Utilize agile 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 using 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
• Data models
• API design (HTTP and RPC)
• State machines
• Event-driven architecture
• Distributed systems
• Database design
• Monitoring and alerting systems

Benefits

• Base Pay Grade - L
• Equity Grade - 6
• Total compensation package including equity rewards, monthly stipends for health, wellness, and tech spending, and benefits (100% subsidized medical coverage, dental, and vision for you and your dependents)
• Remote-first company with options to work from home or in-office depending on role requirements
• Competitive benefits package including health care coverage, flexible spending wallets, time off, ESPP, and more