Senior Software Engineer

Affirm

full-time

Posted on: 10/17/2025

Location Type: Remote

Location: Remote • California, Connecticut, New Jersey, New York, Washington • 🇺🇸 United States

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💰 $206,315 - $240,000 per year

Senior

KotlinPython

About the role

Design, develop, and test high quality software systems using JavaScript, React, Python and Kotlin
Create tools and libraries that provide foundational functionality for, or in support of, the web application using JavaScript and React
Maintain and improve test, build, and release pipelines
Incorporate needs and opinions from stakeholders, advocating for ideas and initiatives
Provide guidance on core application architectural decisions and driving implementation
Work with engineers across the organization on project definition, technical specification, task break-down, delivery, monitoring, and maintenance
Engineering and integrating Affirm's systems with third-party servicing solutions such as Salesforce Service Cloud
Provide support on questions around the software systems and the tooling built around the app
Debugging code issues utilizing data and stack trace analysis

Bachelor's degree in (or foreign equivalent) in Computer Science, Computer Engineering, or related field
3 years of experience in software application development including Kotlin, Python, React, MongoDB, or Node.js
Leveraging software engineering best-practices including Source Control, Agile Methodology or Code Reviews to develop and deploy projects within an agreed upon timeline
Utilizing modern testing frameworks including Jest to write and maintain unit, integration and functional tests
Debugging code issues utilizing data and stack trace analysis

Benefits

100% subsidized medical coverage for you and your dependents
Dental and vision coverage
Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
Competitive vacation and holiday schedules allowing you to take time off to rest and recharge
Employee stock purchase plan enabling you to buy shares of Affirm at a discount

Tip: use these terms in your resume and cover letter to boost ATS matches.

JavaScriptReactPythonKotlinMongoDBNode.jsJestAgile MethodologySource ControlCode Reviews

stakeholder advocacyguidancecollaborationproject definitiontechnical specificationtask breakdowndeliverymonitoringmaintenancedebugging

Bachelor's degree in Computer ScienceBachelor's degree in Computer Engineering