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Software Engineer I, Frontend (Upfunnel)

Affirm

Remote · CanadaSalary not disclosedfull-timeAffirm Careers

The Upfunnel team builds pre-checkout experiences that help shoppers understand Affirm on merchant sites. As a Software Engineer I, you will contribute to reliable, accessible, and performant experiences across Affirm.js, promotional messaging, experimentation, and developer-facing frontend tooling.

Responsibilities

  • We are looking for a collaborative, curious Software Engineer I to build reliable and scalable frontend experiences that make Affirm’s value clear before checkout.
  • You will build and improve high-traffic frontend experiences across Affirm.js, promotional messaging, experimentation, and developer-facing tooling.
  • You will work collaboratively and proactively with your team and stakeholders, bringing them along for your work and helping to create visibility and dialog regarding the risks and trade-offs related to your work.
  • You will strike the right balance of speed and quality in your work, ensuring that we hit our business goals while protecting our systems from downtime.
  • You will use browser debugging, monitoring, metrics, and testing tools to maintain reliable cross-browser experiences and contribute to operational issues with your team.
  • You will contribute to a sense of community on your team by engaging in growth and development activities.
  • What We Look For
  • You have previous work or internship experience shipping web apps using declarative UI frameworks like React or Vue.
  • You have previous work or internship experience working with Javascript/Typescript.
  • You have mastered taking a simple problem or business scenario into a solution that interacts with multiple software components, and executing on it by writing clear, easily understood, well tested and extensible code.

Languages

    Work format
    Remote
    Seniority
    Mid
    Posted
    11 Sept 2026
    Last verified
    In the last 5 days

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