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Affirm

Staff Software Engineer, Backend (Capacity Modeling)

Affirm · Remote Canada

Posted about 3 months ago

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

Is this posting real?

This role has been open
80 days
Affirm's roles stay open a median of 80 days
Reposted
No
Salary listed
No
69% of Affirm's roles list one
Ghost-job risk at Affirm
high
204 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
2026-10-22

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 Staff Software Engineer on the Capacity Modeling team at Affirm, you will lead the technical strategy for backend systems that ensure the company can handle forecasted traffic, particularly during peak sales events. Your role involves collaborating with cross-functional teams, setting operational standards, and mentoring team members while maintaining high availability and performance of distributed systems.

Our read on this posting2.2out of 5
benefits
2/5
freshness
1/5
career value
4/5
role clarity
4/5
pay transparency
0/5

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

  • 8+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin
  • Experience developing highly available distributed systems using technologies like AWS, MySQL, Spark and Kubernetes
  • Experience supporting scale up and down of large scale sales events such as Prime Day, Black Friday Cyber Monday
  • Experience tuning autoscaling, CPU/Memory, and multi-threading for compute type workloads
  • Experience delivering major features or system components through the definition of a technical and execution plan
  • Strong verbal and written communication skills for effective collaboration with global engineering teams

What you get

  • 100% subsidized medical coverage for employees and their dependents
  • Monthly stipends for health, wellness and tech spending
  • Flexible time off and generous holiday calendars
  • Employee stock purchase plan (ESPP) allowing purchase of Affirm stock at a discount

Worth weighing

  • No salary listed for specific experience levels beyond the base pay range
  • Remote-first work environment with occasional in-person requirements
  • Vague mention of 'flexibility built in' without specifics

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

Listed by Affirm on their greenhouse job board, last confirmed open on 2026-10-22. PitchMeAI is not the employer.

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