Senior Software Engineer, Fullstack (servicing International)

Affirm Affirm · Fintech · Poland, Spain · Remote · Financial Platforms - Engineering

Senior Software Engineer, Fullstack role at Affirm focused on building the foundational platform for international market expansion, specifically for purchase protection features like disputes and refunds. Requires experience in backend systems (Python, Kotlin, AWS, MySQL, Kubernetes) and frontend web apps (React, Vue), with a focus on ownership, quality, and collaboration.

What you'd actually do

  1. You will be responsible for owning and delivering quarterly goals for your team, leading engineers on your team through ambiguity to solve open-ended problems, and ensuring that everyone is supported throughout delivery.
  2. You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs.
  3. You will proactively identify project, process, technology or business issues, advocate for them, and lead in solving them.
  4. You will support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting “keep the lights on” & on-call efforts.
  5. You will foster a culture of quality and ownership on your team by setting or improving code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks.

Skills

Required

  • Python
  • Kotlin
  • AWS
  • MySQL
  • Kubernetes
  • React
  • Vue
  • backend systems design
  • web app development
  • technical planning
  • code quality
  • collaboration

Nice to have

  • experience in purchase protection, disputes, and refunds
  • experience launching products in new international markets
  • experience with international engineering teams

What the JD emphasized

  • 4+ years of experience as a software engineer
  • experienced in designing, developing, and launching backend systems at scale
  • exposure to building web apps with declarative UI frameworks
  • experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design
  • proficient at making significant changes in a large code base
  • take ownership of your growth, proactively seeking feedback