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Software Engineer II, Backend (Repayment UX)

Affirm
Remote Spain
Jun 5, 2026
Salary not listed

Job Description

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.

The Repayment UX Engineering team is growing, and were looking for a Software Engineer specializing in Backend development. Were a full-stack team located entirely in Europe within the same time zone, but culturally rooted in Sillicon Valley.

We directly improve the financial lives of over 20 million people. We build and own user journeys that enable them to pay back loans worth collectively over $30B each year.

Our team exist to make these moments the most reliable and transparent in world-class consumer finance.

Our work is agile and fast-paced, shipping new code to production almost every two-week sprint, and rigorously measuring the impact it has on the behavior of our users.

This role rewards curiosity, ownership, and a builders mindset. Youll know exactly what your objectives are, youll have what you need to hit them, and youll choose your own path to get there.

Youll learn quickly from experienced teammates and grow your craft on problems that matter at scale.

If you want to build something new and operate it at scale – come join us!

What Youll Do

· With the support of your team’s tech lead and manager, you will break down larger projects into individual tasks, deliver them in multiple phases, and collaborate with others to ensure timely delivery of your work.

· 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.

· 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.

· You will contribute to a sense of community on your team by engaging in growth and development activities such as participation in the interview process.

What We Look For

· You have a total of 1.5+ years of experience as a software engineer.

· You have experience designing, developing and launching APIs at scale using languages like Python or Kotlin.

· You have experience shipping web apps using declarative UI frameworks like React or Vue.

· 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.

· You are comfortable naviga