Fullstack Engineer – Repayment UX (Remote Spain)

Affirm, Inc.; Comunidad de Madrid; Remote; EUR 55,000 - 75,000; Full time

Benefits offered by this job

Visa sponsorship

Remote-first

Health coverage

Employee stock purchase plan

Job summary

Affirm, Inc. is seeking a Software Engineer II, Fullstack (Repayment UX) to join a Europe-based team focused on reliable, scalable repayment experiences. The role operates from Spain with a remote-first policy, collaborating across product, design and analytics.

Expect on-call rotations and opportunities to impact millions of users with high-scale financial services. You'll contribute to backend and frontend work using Python or Kotlin, React/Vue, and possibly React Native, while growing your

Qualifications

• 1.5+ years of experience as a software engineer.
• Proficient in Python or Kotlin.
• Experience shipping web apps with React or Vue.
• Experience with mobile apps using React Native is a bonus.
• Comfortable navigating a large code base and giving feedback via code reviews.
• Demonstrated ownership and proactive growth.
• Strong verbal and written communication for global collaboration.

Responsibilities

• Break down projects into tasks and deliver in phases with timely delivery.
• Collaborate with product, design and analytics on feasibility and constraints.
• Support operations by creating metrics and maintaining on-call readiness.
• Foster team growth through participation in interview processes.
• Participate in on-call rotation as part of the role.

Skills

Python

Kotlin

React

Vue

React Native

Code reviews

Ownership

Communication

Job description

Affirm, Inc. is seeking a Software Engineer II, Fullstack (Repayment UX) to join a Europe-based team focused on reliable, scalable repayment experiences. The role operates from Spain with a remote-first policy, collaborating across product, design and analytics.

Expect on-call rotations and opportunities to impact millions of users with high-scale financial services. You'll contribute to backend and frontend work using Python or Kotlin, React/Vue, and possibly React Native, while growing your