Senior Backend Engineer - Money Transfers

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Build and maintain backend services that sit at the heart of SumUp's transfer infrastructure, taking end-to-end ownership from development through to observability, testing and production support

Contribute to the migration from market-specific services toward a unified global transfer platform, working across a mix of active services and legacy systems being decomposed

Raise well-scoped pull requests, conduct thorough code reviews, and help maintain high standards of code quality and test coverage across the team

Participate in incident reviews and the on-call rotation, taking accountability for the reliability of the services you build

Contribute to the technical roadmap by participating in architectural discussions and proposing solutions for complex, distributed systems challenges

Apply AI tooling to accelerate your own engineering workflows and contribute to raising the team's overall AI literacy

You'll be great for this role if…

Solid experience as a Backend Software Engineer in modern languages (e.g. Kotlin, Go, Java, etc.). Kotlin is the team's primary language and we also work with Java, Golang, and Elixir.

Do you have experience in Spring Framework?, Solid understanding of distributed systems and event-driven architecture. Experience with async processing and messaging tools like Kafka (or similar).

Experience working with microservice architectures, including Spring Boot and event-driven patterns, alongside solid knowledge of relational databases and API design

Comfortable working in high-throughput, regulated environments where reliability matters. Defensive coding and attention to edge cases are part of the job

Clear communicator in written and spoken English, with a collaborative approach to working across global teams

Pulled from the full job description

• Referral program
• Sabbatical, Curious about the product impact, not just the code. Comfortable thinking about how backend decisions affect the end user experience.

Why you should join SumUp

Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our Berlin office. This involves an office-first setup

Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced

Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success

A dedicated annual L&D budget of €2000 for your individual development, which can be used to attend conferences and/or advance your career through further education

A corporate pension scheme where we match up to 20% of your contributions

Generous time off: enjoy 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