Senior Software Engineer, Backend (Comms Core) Remote Spain About the Engineering team The Engineering team builds systems that power Affim's mission. We take pride in our craft, building reliable, performant, and scalable solutions that touch every part of the business. Whether we're enabling new ways to pay, ensuring our platforms can scale to the most demanding levels in the industry, or developing seamless servicing experiences, our focus is on solving complex problems through exceptional engineering. Affim's Communications team builds and modernizes the highly available platform that delivers billions of customer messages reliably and on time across the customer journey. As a senior backend engineer, you will shape multi-region, multi-tenant infrastructure, APIs, and vendor integrations that help product teams communicate with customers at scale. You will design and evolve reliable backend services for high-volume communications across multi-region, multi-tenant environments, including orchestration, delivery, preferences, templates, and observability. You will proactively identify and solve project, process, technology, or business issues that affect scalability, developer experience, and operational resilience. You will foster quality and ownership by improving design, testing, code review, rollout, and operational standards, and advocating for them through writing and tech talks. You will help develop talent on your team by providing feedback, mentorship, and technical direction, and leading by example.



~ You have 5+ years of experience in software development or engineering, with a deep understanding of system design and architecture. Proficiency in modern programming languages such as Python, Kotlin, or similar. You have a track record of developing highly available distributed systems using technologies like AWS, MySQL, DynamoDB, and Kubernetes. You have experience designing multi-region, multi-tenant platforms with strong isolation, scalability, failure recovery, and data-consistency guarantees. 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 global 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). Location
- Remote Spain We 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 Affim is proud to be a remote-first company. Some positions may occasionally require in-person work at an Affim office, and a few are office-based due to the nature of the work. Health coverage at no cost: Versátil time off and generous holiday calendars help you rest when you need to. Affim considers qualified applicants with arrest and conviction records, as required by law. #

📌 (Senior) Software Engineer (Comunidad de Madrid)
🏢 Affirm
📍 Comunidad de Madrid