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.
We are reinventing credit cards entirely. We are working directly with card issuers to change how credit is used throughout the world, creating new types of cards that work for both their everyday lives and large purchases with extremely straightforward, flexible terms. You will be the lead engineer for our EU teams. You'll work across stacks and across the company, working both in just-in-time transaction processing that has to take place in milliseconds, along with our ledgering and reconciliation systems in post-transaction processing.

What you'll do
You will be responsible for setting technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects.
You will be the lead software engineer for all cards in the EU.
You take ownership of your team's operations and availability by ensuring you have the right monitoring, triage rotations, playbooks, policies, testing and alerting in place to support "keep the lights on" & on-call efforts.
You will foster a culture of quality and ownership on your team by setting code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks.
What we look forYou have a total of 8+ years of experience as a software engineer.
You are proficient in designing, developing and launching backend systems at scale technologies like Python, Kotlin, AWS, MySQL, and KubernetesYou are proficient in developing front end applications.
You write high quality code that is easily understood and used by others.




You have strong verbal and written communication skills that support effective collaboration with our integral engineering team.
Base pay is part of a total compensation package that may include monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). Flexible Spending Wallets for tech, food and lifestyleAway Days
- wellness days to take off work and rechargeEmployee Resource & Community GroupsWe are able to offer visa sponsorship for this role, but do require that someone is based in Spain for the role.
Location
- Remote SpainAffirm is proud to be a remote-first company The majority of our roles are remote and you can work almost anywhere within the country of employment. Affiliers in proximal roles have the flexibility to work remotely, but will occasionally be required to work out of their assigned affirm office. A limited number of roles remain office-based due to the nature of their job responsibilities.
Health care coverage
- Affim covers all premiums for all levels of coverage for you and your dependentsFlexible Spending Wallets
- generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expensesTime off
- competitive vacation and holiday schedules allowing you to take time off to rest and rechargeESPP
- An employee stock purchase plan enabling you to buy shares of Affim at a discountWe believe It's On Us to provide an inclusive interview experience for all, including people with disabilities. S. positions that could be performed in Los Angeles or San Francisco] Pursuant to the San Francisco Fair Chance Ordinance and Los Angeles Fair Chance Initiative for Hiring Ordinance, Affim will consider for employment qualified applicants with arrest and conviction records.

📌 Staff Software Engineer, Backend (Madrid)
🏢 Affirm
📍 Madrid