Senior Software Engineer, Fullstack (Repayments UX)
Quick Summary
At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.
At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.
The Repayment UX Engineering team is growing, and we're looking for a Senior Full-Stack Software Engineer. We're a full-stack team located entirely in Europe within the same time zone, but culturally rooted in Silicon 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 $40B each year. Our team exists to make these moments the most reliable and transparent in world-class consumer finance.
Responsibilities
~1 min read- →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.
- →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 proactively identify project, process, technology or business issues, advocate for them, and lead in solving them.
- →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 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.
- →You will help develop talent on your team by providing feedback and guidance, and leading by example.
- →On-Call Rotation - There would be an on-call rotation for this role as a requirement.
- You have 4+ years of experience of developing and architecting mobile applications, preferably using declarative UI frameworks like React Native.
- You have experience shipping web apps using declarative UI frameworks like React or Vue.
- You have experience designing, developing and launching backend systems and are proficient in one of Python or Kotlin.
- Experience developing and architecting mobile applications, preferably using declarative UI frameworks like React Native is a bonus.
- You have experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design. You write high quality code that is easily understood and used by others.
- You are proficient at making significant changes in a large code base, and have developed a suite of tools and practices that enable you and your team to do so safely.
- Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders.
- You have strong verbal and written communication skills that support effective collaboration with our global engineering team.
What We Offer
~1 min readWe are able to offer visa sponsorship for this role, but do require that someone is based in Spain for the role.
Remote-first with flexibility built in
Affirm is proud to be a remote-first company. Most roles can be done from almost anywhere within the country of employment. Some positions may occasionally require in-person work at an Affirm office, and a few are office-based due to the nature of the work. All new hires will be invited to attend an in-person onboarding experience.
Benefits designed for you
Our benefits reflect our commitment to care, transparency, and flexibility. Here are a few highlights:
- Health coverage at no cost: We cover 100% of premiums for employees and their dependents.
- Spending stipends: Monthly stipends support your tech setup, and the ability to choose health and wellness options that are right for you.
- Time off to recharge: Flexible time off and generous holiday calendars help you rest when you need to.
- Own a piece of what you build: Our employee stock purchase plan (ESPP) lets you buy Affirm stock at a discount.
We’re committed to providing an inclusive interview process, including accommodations for candidates with disabilities. If you need support, we’re happy to help.
For positions based in San Francisco or Los Angeles: Affirm considers qualified applicants with arrest and conviction records, as required by law.
By clicking "Submit Application," you acknowledge that you have read Affirm's Global Candidate Privacy Notice and consent to the use of your personal information as described.
Location & Eligibility
About this job
- Pay per year
- €86,000–€122,000 a year
- Who can apply
- Spain
- Posted
- 3 days ago
Listing Details
- Posted
- October 27, 2026
- First seen
- October 27, 2026
- Last seen
- October 30, 2026
Posting Health
- Days active
- 2
- Repost count
- 1
- Trust Level
- 81%
- Scored at
- October 30, 2026
Signal breakdown
We’re excited to announce that Affirm is now a remote-first company!
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