Senior Backend Engineer - Global Expansion
SumUpBerlin, Germany
Posted May 7, 2026
Full Time
About the Company
SumUp is a fintech company that provides simple and affordable tools for small businesses to manage payments, finance, and customer relationships.
Job Description
Join the Global Expansion Acquiring Squad as a Senior Backend Engineer and play a critical role in SumUp's growth into new markets. Design and build scalable backend services, lead technical investigations, and mentor engineers on the team. Enjoy real ownership, work in ambiguous and complex environments, and teach AI how your codebase works.
Requirements
- Strong proficiency in Golang (primary) or a JVM language such as Java or Kotlin
- Experience configuring AI coding assistants at a team level
- Solid understanding of idempotency, retry policies, and transaction safety in payment or financial systems
Benefits
- Enrolment onto our Virtual Stock Option programme
- A dedicated annual L&D budget of €2,000
- A corporate pension scheme where we match up to 20% of your contributions
- Generous time off: 28 days of paid leave plus public holidays and special leave days
- Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches
- Break4me: 1-month sabbatical after 3 years of service
- Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team