Senior Backend Engineer (Golang)

Join SumUp as a Senior Backend Engineer (Golang)

In the Global Bank tribe at SumUp, we are building the infrastructure and core services needed to provide our merchants with a digital bank account that allows them to be successful at doing what they love. Our goal is to become the most popular banking partner for small merchants globally by offering a high-quality banking experience tailored to small business needs - effortless, simple, and affordable.

Your Role

As a Senior Backend Engineer (Golang), you will be responsible for supporting the transition from a localized setup with regional banks to a unified Global Bank. One of the main challenges will be to support our move to a fully distributed, event-driven architecture.

What You’ll Do

• Collaborate with the global team to design and build a unified global platform, including high-level APIs for multiple regions and local implementations, ensuring high availability and observability.
• Build and maintain highly available, self-healing, and resilient event-driven systems.
• Support the migration of systems and processes, ensuring zero downtime for clients, and design, implement, and support high-value features for customers.
• Improve test coverage for existing services and own the end-to-end delivery of changes, including testing, observability, and monitoring.
• Continuously improve our engineering culture by refining best practices, clarifying problems and opportunities, prototyping solutions, providing comprehensive documentation, and selecting new tools and technologies.

What We’re Looking For

• Solid programming experience in Golang and interest in working with additional languages such as Java, Kotlin, and Elixir.
• Extensive experience as a Backend Engineer specializing in distributed, fault-tolerant, and event-driven systems.
• Proven experience in system design, data modeling, and API design.
• Hands-on experience with Kafka, Postgres, and SQL databases.
• Prior experience with modern cloud technologies (AWS, Docker, Kubernetes).
• Experience with CI/CD products such as GitHub Actions and ArgoCD.
• A keen sense of ownership and dedication to writing clear, maintainable, and testable code.
• Passionate and curious about solving user challenges.

Bonus Points

• Experience with monitoring tools like Prometheus, Grafana, and Honeycomb.
• Experience in the fintech industry.

Why You Should Join SumUp

• Be part of a truly global team of 3200+ people from 80+ countries, spread across 4 continents.
• Enjoy 25 days of annual leave plus Birthday Leave.
• Access a dedicated annual Learning & Development budget (2000 Euro/year) for attending conferences and/or advancing your career through further education.
• Enrollment in our virtual stock ownership program - you will own a stake in SumUp’s future success.
• Work on large-scale fintech products used by millions of businesses around the world.
• Health Insurance, Death & Disability Insurance.
• Access to the SumUp Sabbatical, our Employee assistance program for mental health, as well as Fitness and Transport allowance and language learning benefits.
• Attend global offsites and/or hackathons.

Join us in Vilnius and be part of a team driven by collaboration, innovation, and a shared vision of creating a world where everyone can build a thriving business.