Software Engineer I, Fullstack (Servicing International) at Affirm

✨ The Stack take on this Affirm job

• 🏢 Affirm has 38 jobs here, 25 with visa sponsorship see all
• 🛂 Visa: Highly Qualified Professional permit. Education: Higher education degree guide
• 💡 No salary shown. Ask Affirm if it is above the minimum.

Updated 2026-11-05, from our data and official sources.

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About the role

Responsibilities:
- Build and maintain full‑stack features focused on purchase protection (disputes, refunds) and agent tooling.
- Implement and ship declarative UI components (React/Vue) and scalable APIs (Python/Kotlin).
- Collaborate with European and global Servicing teams to design cohesive, production-ready solutions.
- Write clear, well‑tested code, perform code reviews, and debug complex issues in a large codebase.
- Balance delivery speed with stability; follow deployment and monitoring practices and participate in on‑call rotation.
- Communicate progress, trade‑offs and risks to stakeholders; contribute to team learning and processes.

Requirements:
- 0–2 years of professional or internship experience shipping web apps using React or Vue.
- Hands‑on experience designing, building and launching APIs using Python or Kotlin.
- Strong fundamentals in writing testable, maintainable code and working across multiple components.
- Comfortable navigating large codebases, debugging others’ code, and giving/receiving code review feedback.
- Good communication skills, proactive ownership of learning, and ability to work in cross‑functional, distributed teams.

Responsibilities

You will build and maintain scalable fullstack solutions for international markets, focusing on purchase protection and agent tooling. You will collaborate with global engineering teams to ensure high-quality, performant code while participating in an on-call rotation.

Requirements

You should have experience shipping web applications using declarative UI frameworks and designing APIs at scale with Python or Kotlin. Strong communication skills and a proactive approach to growth and code quality are essential for this role.

Key skills

• React — in 277 other listings on The Stack
• Vue — in 16 other listings on The Stack
• Python — in 1200 other listings on The Stack
• Kotlin — in 251 other listings on The Stack
• API design — in 192 other listings on The Stack
• Fullstack development — in 4 other listings on The Stack
• Software engineering — in 194 other listings on The Stack
• Code review — in 85 other listings on The Stack
• Debugging
• Scalable systems
• Declarative UI
• Communication skills
• Problem solving
• Collaboration

On The Stack (as of 2026-11-05)

• Affirm has 37 other listings on The Stack, 24 of them marked as offering visa sponsorship.
• 76 visa-sponsored jobs in Spain on The Stack, posted in the last 60 days.
• 195 visa-sponsored software engineer jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about Affirm

Is this Software Engineer I, Fullstack (Servicing International) role still open?

It was posted on 2026-08-05. Listings more than 30 days old may no longer be active, so check Affirm's site before applying.

Does Affirm offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Affirm's site.

Where is this role located?

The listing gives the location as Spain. It is marked on-site.

What skills does this role ask for?

The listing names: React, Vue, Python, Kotlin, API design, Fullstack development, Software engineering, Code review, Debugging, Scalable systems, Declarative UI, Communication skills, Problem solving, Collaboration.