Staff Software Engineer, Backend (Fraud Decisioning)

Remote · Remote US · USD 181,000-241,000 / month · 6-10 years experience · Remote · Posted Oct 9, 2026

At a glance

Affirm is looking for a Staff Engineer to lead projects and initiatives on the Fraud Decisioning team.
This role involves building tools and systems that empower fraud fighting capabilities, working with cross-functional teams, and using analytics to improve fraud decider performance.

Work across the org to plan and execute large, cross-functional initiatives, including: project definition, technical specification, task break-down, delivery, monitoring, and maintenance.
Generate simple and elegant designs that are easily deployed and debugged, but anticipate the unhappy path.
Write high-quality code that can be easily understood and leveraged by others.
Review others’ work and provide constructive feedback in order to maintain high and consistent quality standards across teams.
Lead and mentor engineers to help them succeed and grow.
Provide the right context to engineers and train them to take ownership of their respective pieces of the initiative.
Effectively incorporate needs and opinions from stakeholders, advocate for ideas and initiatives, and create a common understanding where all voices are heard.
Conduct technical and soft skill evaluations to inform and influence the hiring decisions.
Develop and review the technical content and requirements of the interview process.

6-10+ years of experience as a software engineer with leadership responsibilities and experience mentoring junior engineers.
Prior experience architecting, building, launching, coding and maintaining complex systems.
Passion for working with cross-functional teams including Product, ML, Analytics and Business teams.
A technical leader and team builder who can mentor the team in software development best practices.
Expert at synthesizing complex business, product, and technical requirements to consistently produce high quality system designs and software.
A system architect who can see the big picture and envision how business and product requirements can be broken up into system modules or components.
This position requires either equivalent practical experience or a Bachelor’s degree in a related field.

Remote role open only to candidates residing in Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, or Saskatchewan.
Remote-first with flexibility built in.
Some positions may occasionally require in-person work at an Affirm office.