Software Engineer II, Backend (Test Infra)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without hidden fees or compounding interest. We help people pay over time for almost anything—with no late fees or surprises.

We are seeking a highly motivated Software Engineer II with strong experience in test automation to contribute to Developer Productivity, with a focus on Test Platform Engineering. The Test Infra team empowers developers to efficiently write, run, analyze, and maintain automated tests. You will play a key role in building and evolving the core testing infrastructure that supports engineering productivity across the organization.

• Own, improve, and maintain integration and E2E test automation frameworks, along with their associated CI pipelines.
• Design and implement technical solutions to optimize test execution time and enhance test stability.
• Write technical specifications and ADRs, contribute to technical solution design, and collaborate with engineers across the company.
• Support engineering teams by assisting with triage requests and sharing best practices for quality assurance and test automation.
• Contribute to the evolution of the company’s overall test strategy.
• This role includes participation in an on-call rotation.

• An East Coast location to enable smoother collaboration with European colleagues.
• 3+ years of experience in test automation.
• Proficient in both TypeScript and Python.
• Hands-on experience with Playwright and Pytest.
• Experience in building and optimizing CI pipelines.
• Experience with Docker and AWS.
• Strong background in quality assurance, test design, and in-depth knowledge of testing techniques and methodologies.
• Excellent communication and collaboration skills, both verbal and written, with proficiency in asynchronous communication methods such as tech specs, RFCs, wikis, and project plans.
• Experience in building or enhancing test automation frameworks and infrastructure is highly desirable.
• Mobile, infrastructure and performance test automation experience will be considered a significant advantage.

Base pay is part of a total 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 base pay range (CA, WA, NY, NJ, CT) per year: 165,000 - 225,000

USA base pay range (all other U.S. states) per year: 146,000 - 206,000

Benefits include flexible time off, generous holiday calendars, and an employee stock purchase plan (ESPP) that lets you buy Affirm stock at a discount.

Click 'Submit Application' on the job posting page to apply.