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 they scale, they are investing heavily in developer experience, automation, and productivity.
About The Role
They are 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.
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
- Improve CI/CD reliability, speed, and observability
- Build internal SDKs, CLIs, and automation frameworks
- Drive adoption of contract testing and integration-first patterns
- Create workflows that turn production incidents into automated coverage
Architecture & Systems
- Modernize automation architecture and integration patterns
- Design tooling that reduces deployment lead time and boosts confidence
- Embed with squads to understand pain points and ship high-leverage solutions
What Success Looks Like
- 60%+ reduction in manual validation
- Faster lead time across all squads
- 70%+ integration coverage with better tooling
- Fully automated Dev/Staging deployments for all teams
What You Bring
Engineering Excellence
- Experience in Kotlin, Go, Python, Java, or similar
- Built internal tools, SDKs, or frameworks used by other engineers
- Deep understanding of microservices, event-driven systems, and CI/CD
- Hands-on with Docker, Kubernetes, AWS, and modern observability stacks
Developer Experience Expertise
- Improved CI/CD or DevEx tooling at scale
- Experience with performance testing, distributed tracing, load testing
- Designed integration/testing frameworks or developer automation
Mindset
- You optimize for leverage, not ticket throughput
- You care deeply about developer happiness and productivity
- You collaborate, embed with teams, and take ownership
- You thrive in autonomy and low-bureaucracy environments