Responsibilities
- Design and build a unified global banking platform with high-level APIs and regional implementations.
- Transform monolithic services into decoupled, scalable, region-agnostic banking services.
- Implement and continuously improve highly available backend services and transfer-system reliability.
- Maintain cloud-native core services using AWS, Kubernetes, Golang, Kotlin, Java, and Elixir.
- Improve test coverage and deliver changes end to end, including testing, observability, and monitoring.
- Contribute to engineering culture, documentation, best practices, solution exploration, and tool selection.
Requirements
- Solid programming experience and interest in Java, Kotlin, Golang, and Elixir.
- Advanced understanding of distributed and event-driven systems.
- Experience with event streaming platforms and messaging brokers such as Kafka.
- Experience with AWS, Docker, and Kubernetes.
- Comfort working with SQL and NoSQL databases.
- Experience with CI/CD tools such as GitHub Actions or ArgoCD.
- Commitment to ownership, clear and maintainable code, testing, collaboration, pairing, and continuous learning.
Benefits
- 25 days of paid leave plus one additional day per year of employment.
- Up to 10 days of educational leave.
- Training, mentorship, SumUp University leadership cohort, and a yearly learning budget of 2,000 EUR.
- Virtual stock ownership program.
- Sabbatical and employee assistance program for mental health.
- Additional health insurance and a subsidized Multisport card.
- Free shuttle buses from Joliot-Curie metro station.
- Global offsites and/or hackathons.
- Global, diverse, collaborative work environment with career growth opportunities.
Tech Stack
Categories
About SumUp
SumUp is a leading global fintech company committed to levelling the playing field for small businesses. Founded in 2012, we’re the trusted partner of over 4 million merchants in 37 markets, providing simple and affordable tools that help them manage payments, finance, and customer relationships. Our vision is a world where everyone can build a thriving business. Guided by this, we champion small business ownership by creating accessible solutions that empower entrepreneurs to grow and succeed. Our diverse team of over 3,000 SumUppers — representing more than 90 nationalities across 20 offices worldwide — is at the heart of our success. Beyond business, we donate 1% of the net revenue generated by Solo devices to environmental causes and support educational and entrepreneurial initiatives around the world. Recognised as a Top Global Employer for inclusion by the Stonewall Workplace Equality Index in 2022 and 2023, and awarded Fintech Diversity Initiative of the Year at the Irish National Fintech Awards in 2025, SumUp continues to build an inclusive, supportive, and purpose-driven workplace where everyone belongs.