Developer Experience Engineer - Quality Infrastructure

SumUp builds financial tools that help millions of small merchants run and grow their businesses. Within this mission, the Global Bank Team is responsible for creating the foundation of SumUp’s digital banking platform - used by merchants across multiple regions. As we scale, we're investing heavily in developer experience, automation, and productivity.

About the Role

We’re looking for a Developer Experience Engineer who can supercharge how 200+ engineers build and ship banking features. You’ll create the tools, infrastructure, and platforms that eliminate friction, improve reliability, and raise the engineering bar across the tribe - directly shaping the pace and quality of SumUp’s global banking platform. If you want to prove that great tooling can be a competitive advantage, this is the place to do it.

What You’ll Work On :

Infrastructure & Platforms

• Build performance monitoring and regression-detection platforms
• Create reusable data-generation systems and merchant / transaction factories
• Develop shadow-traffic and automated validation infrastructure
• Implement foundations for deterministic, automation-gated deployments

Developer Productivity & Tooling

Architecture & Systems

What Success Looks Like :

What You Bring :

Engineering Excellence

Developer Experience Expertise

Mindset

Nice to Have :

Experience with Kafka, Pact, fintech environments, PostgreSQL, developer portals, or open-source tooling.

Why you should join SumUp

About SumUp

We believe in the everyday hero.

Small business owners are at the heart of all we do, so we create powerful, easy-to-use financial solutions to help them run their businesses. With a founder’s mentality and a 'team-first’ attitude, our diverse teams across Europe, South America and the United States work together to ensure that the small business owners we partner with can be successful doing what they love.

SumUp is an Equal Employment Opportunity employer that proudly pursues and hires a diverse workforce. SumUp does not make hiring or employment decisions on the basis of race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. SumUp also strives for a healthy and safe workplace and strictly prohibits harassment of any kind.

SumUp will not accept unsolicited resumes from any source other than directly from a candidate.

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.