Staff Software Engineer, Backend (Experimentation)

East Bay, CA, United States, Los Angeles, CA, United States, New York, NY, United States, Remote, Seattle, WA, United States, San Francisco, CA, United States, Silicon Valley, CA, United States


Role Locations

  • East Bay, CA, United States
  • Los Angeles, CA, United States
  • New York, NY, United States
  • Remote
  • Seattle, WA, United States
  • San Francisco, CA, United States
  • Silicon Valley, CA, United States


501+ people


650 California St Fl 12
San Francisco, CA, 94108-2716, US

Tech Stack

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

Role Description

The Affirm Experimentation Platform (AXP) team empowers Affirm to make smarter, faster product decisions through experimentation. We build a multivariate testing platform and ecosystem that enables our company to effectively understand the impacts that our product changes have on the business.

We are seeking a Staff Software Engineer to lead our efforts growing our experimentation platform and evangelizing our vision of having every product change released as an experiment. You'll partner deeply with product managers, engineering leads, and other stakeholders across the company to understand their needs and help them ship better products, faster. Our system is high scale, highly visible, and central to the success of Affirm and our engineering team.

What you'll do

Partner with product, engineering, and more to understand problems and design solutions Architect high scale, high visibility software systems -- our system is used by most every team at Affirm and powers most of our product iteration. Drive detailed project definition, design, cross-functional alignment, estimation, in addition to task break-down, delivery, monitoring, and maintenance. Serve as a technical resource and engineering mentor for other engineers both inside and outside the immediate team.

What we look for

6-10+ years of experience as a software engineer with leadership responsibilities and experience mentoring junior engineers. Passion for partnering with cross-functional teams including Product, Design, Analytics and Business teams. Experience building thoughtfully designed, highly performant HTTP and RPC interfaces Product-centric thinking -- we care just as much about the product experience (ours, our stakeholders', and our company's) as we do the design of our engineering systems. Familiarity with experimentation or feature flagging systems is a plus

Technology you will use

Python / Flask RPC HTTP / OpenAPI Microservices AWS Airflow Git / Phabricator Location

We’re excited to announce that Affirm is now a remote-first company! This role can be located anywhere in the U.S. and Canada (with the exception of Quebec). Remote based employees may occasionally travel to an Affirm office for meetings or team building events. Our offices in San Francisco, New York City, Pittsburgh, Chicago, and Salt Lake City will remain operational and accessible for anyone to use on a voluntary basis.

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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