Software Engineer II, Backend (Post-Transaction)

Posted Yesterday
Easy Apply
Hiring Remotely in United States
Remote
146K-225K Annually
Junior
Big Data • Fintech • Mobile • Payments • Financial Services
We create honest financial products that improve lives. Ready to make a difference?
The Role
Develop and operate backend systems supporting post-transaction processing for Affirm Card. Break down projects, write tested and extensible code, collaborate with product and engineering teams, monitor system health, troubleshoot issues, participate in on-call support, and contribute to code reviews and team development.
Summary Generated by Built In

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.

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 Affirm Card is one of the company's fastest-growing products and an increasingly significant contributor to overall platform GMV. Our team owns everything that happens after a card transaction settles. We build and operate the systems that keep customer accounts accurate and resolve issues when something goes wrong after a transaction, working closely with the teams that own card issuing, transaction processing, and money movement.

As Affirm continues to expand its card offerings, the volume and complexity of post-transaction interaction continues to grow. You will work on systems that directly determine whether customers get accurate resolutions and timely communications after a card transaction, collaborating closely with product, compliance, and cross-functional partner teams. This is a unique opportunity to help shape the customer-facing outcomes of one of Affirm's most strategic and fastest-growing products while solving complex engineering challenges at scale.

What You'll Do

  • 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 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.

What We Look For

  • You have a total of 1.5+ 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.

Base Pay Grade - L

Equity Grade - USA 6

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.

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 Pacific base pay range (CA, WA, NY, NJ, CT): $165,000 - $225,000 USD. 

USA Sapphire base pay range (all other U.S. states): $146,000 - $206,000 USD. 


#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. A limited number of roles remain office-based due to the nature of their job responsibilities.

We’re extremely proud to offer competitive benefits that are anchored to our core value of people come first. Some key highlights of our benefits 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. We are happy to provide reasonable accommodations to candidates in need of individualized support during the hiring process.

[For U.S. positions that could be performed in Los Angeles or San Francisco] Pursuant to the San Francisco Fair Chance Ordinance and Los Angeles Fair Chance Initiative for Hiring Ordinance, Affirm will consider for employment qualified applicants with arrest and conviction records.

By clicking "Submit Application," you acknowledge that you have read Affirm's Global Candidate Privacy Notice and hereby freely and unambiguously give informed consent to the collection, processing, use, and storage of your personal information as described therein.

Skills Required

  • 1.5 or more years of experience as a software engineer
  • Experience designing, developing, and launching backend systems
  • Proficiency in Python or Kotlin
  • Familiarity with distributed systems
  • Experience with AWS, MySQL, and Kubernetes
  • Ability to design solutions involving multiple software components
  • Ability to write clear, well-tested, extensible code
  • Ability to navigate large codebases and debug code
  • Experience providing feedback through code reviews
  • Strong verbal and written communication skills
  • Equivalent practical experience or a bachelor's degree in a related field

What the Team is Saying

Nupur
Jerry
Adam
Affirm
Affirm
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Affirm Compensation & Benefits Highlights

  • Affordable Benefits Zero-premium healthcare for employees and dependents is highlighted, with the benefits portal showing $0 payroll contributions and company-paid premiums for medical, dental, and vision in 2026. Transparent plan-cost displays further underscore the low out-of-pocket burden.
  • Leave & Time Off Breadth A wide mix is outlined, including Flexible Time Off for exempt employees, 20 accrued vacation days for non-exempt employees, Health Days, Bereavement, Life Happens leave, jury duty, and company-wide Away Days to reduce distractions. These programs collectively point to generous paid time provisions beyond standard PTO.
  • Wellbeing & Lifestyle Benefits No‑cost mental health support is offered via Lyra, and Forma-administered wallets provide substantial monthly stipends (e.g., Lifestyle and Tech) along with a S.A.F.E. family‑building wallet with a $20,000 lifetime maximum. This combination indicates strong support for everyday wellness and major life events.

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The Company
HQ: San Francisco , CA
2,200 Employees
Year Founded: 2012

What We Do

At Affirm, we help people say yes to the things that matter with flexible, transparent ways to pay over time. No hidden fees, no compound interest, and no fine print—just a smarter way to spend.

Why Work With Us

Who is an Affirmer? /noun/ Someone who believes finance shouldn’t be complicated. We come from a diverse set of backgrounds and we’re driven by the desire to improve lives through honest financial products. We define success by challenging one another to bring our best ideas to every single project—and we have fun while doing it.

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Affirm Offices

Remote Workspace

Employees work remotely.

Affirm is a remote-first company! Our employees can work anywhere in the U.S. but if an office is more your style, we have office locations in San Francisco, Chicago, New York City, and Pittsburgh.

Typical time on-site:
HQSan Francisco, CA
Spain
United Kingdom
Chicago, IL
New York, NY
Toronto, ON
Warsaw, PL
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