Senior Backend Engineer (Golang) - Global Bank

In the Global Bank tribe, we are building the infrastructure and core services needed to provide our merchants with a digital bank account that empowers 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 their needs—effortless, simple, and affordable.

Joining the Global Bank tribe means playing a key role in helping us build SumUp's digital bank. You’ll collaborate with a global, autonomous, cross-functional team that refines an aspect of our product from concept to execution. Work alongside colleagues from 32 nationalities across Cologne, Berlin, São Paulo, Sofia, London and Vilnius, united by a shared commitment to taking ownership, working with purpose, and helping small businesses thrive.

As a Senior Backend Engineer (Golang), you will play a key role in helping us transition from a localized setup with regional banks to a unified Global Bank. A significant challenge will involve supporting the move to a fully distributed, event-driven architecture.

What You’ll Do

• Collaborate with a supportive global team to design and build a unified global banking platform, including high-level APIs for multiple regions and local implementations, ensuring high availability and observability.
• Develop and maintain highly available, self-healing, and resilient event-driven systems.
• Support the migration of systems and processes, ensuring zero downtime for users, and contribute to designing, implementing, and supporting high-value features that empower merchants globally.
• Improve test coverage for existing services and drive the end-to-end delivery of changes, including testing, observability, and monitoring.
• Shape and continuously improve our engineering culture by sharing ideas, refining best practices, exploring innovative solutions, and contributing to comprehensive documentation and tool selection.

You’ll be great for this role if you have

• Solid programming experience in Golang and are interested in working with additional languages such as Kotlin and Elixir.
• You have expertise in building distributed, event-driven systems
• Solid background in system design, data modelling, and API development.
• Practical experience with Kafka, Postgres, and SQL databases.
• Prior experience with modern cloud technologies (AWS, Docker, Kubernetes).
• Proficiency with CI/CD products such as GitHub Actions and ArgoCD.
• You take pride in your work, have a keen sense of ownership, and are dedicated to writing clear, maintainable, and testable code.
• Curiosity and enthusiasm for solving meaningful challenges for users and a commitment to collaboration and continuous learning.

We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

Why you’ll enjoy working at SumUp

• Be part of a company that values diversity and celebrates unique perspectives.
• Work with a global team of skilled professionals in an environment that fosters collaboration, learning, and growth.
• Be part of a global tribe building a banking solution from the ground up and delivering impactful solutions to the real-life problems of millions of SumUp merchants all over the world
• Career growth and learning opportunities: We invest in your development through regular training, mentorship programs, SumUp University leadership cohort and a yearly learning budget (2,000 EUR)
• Sabbatical program for tenured SumUppers
• Join a global team where you belong: Check out our D&I Initiatives and Employee Resource Groups such as Pride Club, SumAfro, Neurodiversity, Grupos Mais, Women in Tech, and more
• Health & wellness benefits: in-house fitness classes, gym in the office, subsidized Urban Sports Club and available psychotherapy sessions
• A lot of other benefits such as Subsidized Public Transport Card, Kita placement assistance, Pension Scheme, Language Learning platform/courses etc.
• Enrollment onto our virtual stock ownership program - you will own a stake in SumUp’s future success

About SumUp

Be empowered to do more that matters.

At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 36 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.

Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify.

SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited.

Explore career opportunities with us and join a team driven by collaboration, innovation, and a shared vision of creating a world where everyone can build a thriving business. Discover more about our vibrant and inclusive work culture and how we work on our careers website, and follow our journey on LinkedIn and Instagram.

SumUp will not accept unsolicited resumes from any source other than directly from a candidate.

Job Application Tip

We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.