Senior Software Engineer (Lending Team)
Confirmed on the employer's own hiring board on Oct 9, 2026. First seen by Alion on Sep 1, 2026. SumUp scores B on the Alion truth index.
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
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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.