Senior Software Engineer, Backend (Fraud)



Role Location

  • Remote


501+ people


650 California St Fl 12
San Francisco, CA, 94108, US

Tech Stack

  • Python
  • Java
  • AWS
  • React
  • JavaScript
  • Kotlin
  • Swift

Role Description

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.

Our Fraud Engineering team’s mission is to protect both consumers and our business by preventing fraud at the point of purchase, uncovering fraud that has occurred, and mitigating its impact.

Are you excited about preventing consumer Identity Theft and Account Takeover? Do you want to help us build our next generation fraud mitigation platform?

Affirm’s Fraud Engineering team is growing and looking for a senior software developer to help keep our customers safe.

What You'll Do Work with our Product team to extend our core decisioning service; building new risk and fraud mitigation features Build effective tools for our Risk Operations team to help uncover fraud in real time Support Data Science by providing them with the signals needed to build effective models Integrate third party solutions and data into our loan application to determine applicant risk Analyze and debug performance issues across distributed services What We Look For Passionate: Passionate about Affirm's Mission: Deliver Honest Financial Products that improve lives Technical: Solid CS fundamentals and fluency of a dynamically typed language. We primarily use Python, but members of our team have backgrounds in a wide range of technologies Collaborative: Enjoys cross team collaboration especially with product managers and designers Humble: You have the humility and self-awareness to understand and navigate the unknown User Focused: Cares about the details in the user experience Experienced: Background building real-time distributed web services, fraud detection and risk decisioning systems

About Affirm

Affirm empowers people to say yes to more of the things they love.

While traditional credit cards charge compounding interest and late fees, we show you up front exactly what you’ll owe—with no hidden fees and no surprises. And through advanced technology and analytics that look beyond traditional FICO scores, we’re able to serve a much broader population than anyone else in the space.

We’re growing fast and hiring smart, curious people to help us revolutionize the banking industry and make it more accountable, accessible, and human. If you’re ready to make a difference, join us.

Company Culture

Affirmers believe people come first. We’re passionate about building something that makes a positive change in our customers’ lives.

Success means all hands are on deck—from engineering to sales and operations. We collaborate companywide and challenge each other to bring thoughtful ideas to every project. Even with our growth, Affirm still feels like a tightly-knit team where every perspective counts.

Interested in this role?
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