Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Merchant & Partner Lifecycle (M&PL) team is at the forefront of Affirm’s architectural transformation. We are addressing critical architectural risks by consolidating merchant lifecycle orchestration into a newly cohesive domain.

You will act as a technical leader responsible for building out the brand new lifecycle-orchestrator service that’s at the heart of multiple connected systems. Your work will deliver immediate availability improvements through system simplification and isolation, and modernize older parts of the codebase.

What You'Ll Do

Design & expand the backbone of our platform to scale to hundreds of thousands of merchants from all around the world Design and align the scope of work with other teams to deliver cross-team projects Mentor other engineers to ensure their development & growth Partner with Engineering Manager and Team Lead to drive and execute the long-term vision of the team Execute technical strategy for broad or complex

Requirements

with insightful and forward-looking approaches that go beyond the direct team and solve large open-ended problems Utilize agentic development tools like Claude Code to automate parts of the development process Improve engineering standards, tooling, and processes throughout the organization What We Look For 5+ years of experience as a backend software engineer A strong understanding of Domain-Driven Design, distributed systems, and how architectural decisions affect performance and maintainability Proficiency with data models, API design (http and RPC), state machines, event-driven architecture, and database design Excellent communication skills, both written and verbal. Must be proficient 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. io , rollbar, chronosphere, kibana) Pay Grade - N Equity Grade - 9 Employees new to Affirm typically come in at the start of the pay range. Affirm focuses on providing a simple and transparent pay structure which is based on a variety of factors, including location, experience and job-related skills.

Compensation

package that may include equity rewards, monthly stipends for health, wellness and tech spending, and

Benefits

(including 100% subsidized medical coverage, dental and vision for you and your dependents.) USA

that are anchored to our core value of people come first.

package include: 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 We believe It’s On Us to provide an inclusive interview experience for all, including people with disabilities.

Base Pay Range (CA, WA, NY, NJ, CT)

per year: 195,000 - 255,000 USA

Base Pay Range (All Other U.S. States)

per year: 173,000 - 233,000 #LI-Remote Affirm is proud to be a remote-first company! The majority of our roles are remote and you can work almost anywhere within the country of employment. Affirmers in proximal roles have the flexibility to work remotely, but will occasionally be required to work out of their assigned Affirm office.

Responsibilities

. We’re extremely proud to offer competitive

Senior Software Engineer, Backend (Merchant & Partner Lifecycle)