Affirm
Senior Software Engineer, Backend (Merchant Advocacy)
Remote Checkout role with clear candidate location fit.
PostedRecently added
Eligible countries2 accepted countries
Seniority signalSenior
Work settingRemote
Accepted candidate locations
CanadaUSA
Role overview
Senior Software Engineer, Backend (Merchant Advocacy)
Requirements and responsibilities
Readable role content extracted into sections for faster review.
Details
- 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
- 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.
- Prior experience with monitoring and alerting systems (sentry.io, rollbar, chronosphere, kibana)
- 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
Similar roles
Keep a backup shortlist.
Stack
Use these tags to compare similar remote roles.
Location eligibility
Candidates should apply only when their profile country is listed here.
Hiring flow
WithMira shows the role, then sends candidates to the company application.
1Check role fit, stack, and location eligibility in WithMira.
2Open the company application page from the tracked apply link.
3Save the role or subscribe for similar opportunities before leaving.