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Affirm

Senior Software Engineer, Back-end (Fraud)

Affirm · Remote Poland

Posted about 3 months ago · $32,000-$48,000

or apply directly on Affirm's site. We never take the application ourselves.

Is this posting real?

This role has been open
81 days
Affirm's roles stay open a median of 82 days
Reposted
No
Salary listed
Yes
69% of Affirm's roles list one
Ghost-job risk at Affirm
high
205 stale, 5 reposted of 205 open
Hiring momentum
283 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-24

Measured from postings appearing on and disappearing from Affirm's own greenhouse board since 2026-08-03. Full hiring picture for Affirm.

About this role

As a Senior Software Engineer on the Fraud Engineering team at Affirm, you will design and implement real-time fraud decisioning services and APIs, primarily using Python or Kotlin. Your role involves collaborating with various stakeholders to support the development of fraud protection systems that can be quickly deployed in new markets. You will also be responsible for mentoring team members, ensuring system reliability, and integrating AI-driven tools into the engineering process.

Our read on this posting3.8out of 5
benefits
5/5
freshness
1/5
career value
4/5
role clarity
4/5
pay transparency
5/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Affirm as an employer.

What you need

  • 5+ years of experience building backend systems at scale using Python or Kotlin
  • Experience with distributed systems and infrastructure using AWS, MySQL/PostgreSQL, and Kubernetes
  • Strong system design skills and a track record of delivering maintainable, extensible services
  • Fluency with AI-driven engineering
  • Proficiency in SQL and working with data-rich environments
  • Familiarity with CI/CD practices and safe production deployments

Nice to have

  • Experience with Snowflake, dbt, Airflow, or Chronosphere
  • Background in fraud prevention, risk systems, or real-time decisioning
  • Experience building for multiple markets or regions - internationalization or localization
  • Experience working in the fintech sector or other highly regulated environments, with a strong understanding of risk, compliance, and operational constraints

What you get

  • Base pay range of 308,000 zł - 428,000 zł
  • Equity from the parent company
  • Flexible spending wallets for technology and wellbeing
  • Competitive paid time off and paid public holidays
  • Comprehensive private healthcare through Lux Med's Platinum package
  • MultiSport card for health and well-being

Worth weighing

  • Remote position based in Poland, but collaboration with North American teams may require flexibility in working hours
  • The job involves significant responsibility in leading engineers and managing ambiguity
  • The role requires a strong focus on integrating AI tools into the engineering process, which may be a shift for some candidates

Summarised from Affirm's posting. Read the full original.

Listed by Affirm on their greenhouse job board, last confirmed open on 2026-10-24. PitchMeAI is not the employer.

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