Affirm · 3 hours ago
Senior Software Engineer, Backend (Merchant Interfaces)
San Francisco, CA
Full-time
Hybrid
Senior Level
$190K/yr - $240K/yr
5+ years expAffirm 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 Senior Software Engineer will contribute to the Partner Merchant Interface team by designing, developing, and maintaining APIs and solutions that facilitate integrations with Enterprise Merchants and Partners.
Financial ServicesFinTechLendingPayments
Responsibilities
With the support of your team’s tech lead and manager, you will break down larger projects into individual tasks, deliver them in multiple phases, and collaborate with others to ensure timely delivery of your work
You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs
You will contribute to the entire API lifecycle, including designing, developing, testing, maintaining, and evolving our APIs
You will support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting 'keep the lights on' & on-call efforts
You will contribute to a sense of community on your team by engaging in growth and development activities such as participation in the interview process
Qualification
Required
You have a total of 5+ years of experience as a software engineer
You have experience designing, developing and launching backend systems and are proficient in one of Python or Kotlin
You are familiar with the building blocks of distributed systems, and the technologies like AWS, MySQL and Kubernetes
You have mastered taking a simple problem or business scenario into a solution that interacts with multiple software components, and executing on it by writing clear, easily understood, well tested and extensible code
You are comfortable navigating a large code base, debugging others' code, and providing feedback to other engineers through code reviews
Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders
You have strong verbal and written communication skills that support effective collaboration with our global engineering team
This position requires either equivalent practical experience or a Bachelor's degree in a related field
Benefits
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
Company
Affirm
Affirm is a financial technology services company that offers installment loans to consumers at the point of sale.
1001-5000 employees
H1B Sponsorship
Affirm has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (89)
2024 (96)
2023 (133)
2022 (179)
2021 (132)
2020 (57)
Funding
Current Stage
Public CompanyTotal Funding
$7.57BKey Investors
New York Life InsuranceSixth StreetPGIM Fixed Income
2025-10-31Post Ipo Debt· $750M
2024-12-17Post Ipo Debt· $800M
2024-12-13Post Ipo Debt· $4B
Leadership Team
Max Levchin
Founder & CEO
Robert O'Hare
Chief Financial Officer
Recent News
Crowdfund Insider
2025-12-25
2025-12-20
Company data provided by crunchbase