Senior Software Engineer (Lending Team)

At SumUp , we believe small merchants are the heartbeat of our communities. By joining the Lending tribe , you'll help launch a new financing product designed for the roughly 50 million registered and informal sole traders in Brazil who currently can't access affordable credit. As a Senior Software Engineer , you'll be the technical anchor of a brand new squad, operating with real autonomy. This is a role for someone who's energised by ambiguity, comfortable owning hard decisions without a playbook to follow, and excited to help shape a lending product from the ground up in a fast-moving, regulated market. What you'll do Build the onboarding journey: Design and build the onboarding experience for non SumUp customers, including KYC and Open Finance account and income data integration Own the repayment integration: Lead the technical relationship with our Open Finance partner alongside the Bank squad Deliver the product end to end: Build the core lending product experience, from credit assessment through to servicing and collections Power the credit decisioning: Connect Open Finance data to underwriting models to support fast, reliable credit decisions Set the technical direction: Make high impact architecture calls with minimal guidance, and coach mid level and entry level engineers Navigate the regulatory landscape: Partner closely with the Bank squad, Compliance, and our Open Finance external integration partner on Open Finance requirements in Brazil What makes you a great fit Have experience designing and owning complex distributed systems end to end, ideally backed by around 6 years in software engineering Have strong knowledge of Open Finance or Open Banking integrations, gained from working inside a bank, fintech, or another regulated financial product Feel comfortable working in Golang on backend systems, with the flexibility to work confidently in another language such as Java, Kotlin, Python, or Ruby Can identify gaps and ambiguity early, weigh up tradeoffs, and drive decisions without waiting for perfect information Shares excitement about building a new product from scratch and exploring unfamiliar territory rather than maintaining something established Why you should join SumUp 🌍 Global Experience : Collaborate with a diverse team of 3,000+ people from over 90 countries, and join our global off-sites and hackathons. 🤝 Collaborative Culture: Join a team that values diversity, innovation, and teamwork, where your ideas and contributions truly matter. 📈 Career Growth : Be part of a global team working on large-scale fintech products used by millions of businesses. 💙 Great Benefits : Health plans, meal vouchers (VR), Zenklub, Wellhub, life insurance, childcare allowance, and more. 📚 Learning & Development : Access an annual budget of R$ 10,000 for education, certifications, and conferences. 🌴 Time Off : Enjoy 30 additional days off through our Break4Me program after 3 years at SumUp. 💸 Grow with Us: Participate in our virtual stock program and benefit from SumUp’s success with company shares. Learn More About SumUp 🇧🇷 Office tour at São Paulo 💡 Ask me anything: Engineering at SumUp 🚀 SumUp’s Innovation Hackathon 🤝 Get to know our hiring process Ready to Join us? Apply now and help us shape the future of financial solutions for small businesses Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.