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Staff Software Engineer, Backend (Card)

Affirm· Consumer Engineering
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Remote€103k - €139kfull-timePosted 2mo ago

About the role

Lead engineer for EU cards at Affirm, responsible for architecture across cards, collaboration with EU counterparts, and delivering high-scale backend systems and on-call operations.

Responsibilities

  • You will be responsible for setting technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects.
  • You will be the lead software engineer for all cards in the EU.
  • You will collaborate across teams in the product development lifecycle by collaborating with product management, design & analytics to ensure technical sustainability, risks and trade-offs are well understood and managed.
  • You will act as a force-multiplier for your team through your definition and advocacy of technical solutions and operational processes.
  • You take ownership of your team’s operations and availability by ensuring you have the right monitoring, triage rotations, playbooks, policies, testing and alerting in place to support “keep the lights on” & on-call efforts.
  • You will foster a culture of quality and ownership on your team by setting code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks.
  • You will help develop talent on your team by providing feedback and guidance, and leading by example.
  • On-Call Rotation - There would be an on-call rotation for this role as a requirement.

Qualifications

  • You have a total of 8+ years of experience as a software engineer.
  • You are proficient in designing, developing and launching backend systems at scale technologies like Python, Kotlin, AWS, MySQL, and Kubernetes
  • You are proficient in developing front end applications.
  • You have experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan. You write high quality code that is easily understood and used by others.
  • You thrive in ambiguity, and are comfortable moving from low level language idioms all the way to the architecture of large systems to understand how they work.
  • Your growth and impact trajectory demonstrates that you have mastered gathering and iterating on feedback from your engineering and cross-functional peers.
  • You have strong verbal and written communication skills that support effective collaboration with our global engineering team.

Skills

Required:Architectural leadershipBackend system design

Benefits

  • Base pay range per year: €103,000 - €139,000
  • Equity rewards offered by Affirm Holdings, Inc.
  • Flexible Spending Wallets for tech, food and lifestyle
  • Away Days - wellness days to take off work and recharge
  • Learning & Development programs
  • Parental benefit
  • Employee Resource & Community Groups
  • 100% subsidized medical coverage, dental and vision for you and your dependents
  • Monthly stipends for tech setup and health/wellness options
  • Flexible time off and generous holiday calendars
  • Employee stock purchase plan (ESPP)
  • Visa sponsorship available for this role with requirement to be based in Spain
  • Remote Spain location - remote-first with flexibility
  • On-site onboarding experience at times
Last updated Oct 7, 2026. Interested? Apply on the company site.

About Affirm

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