At SumUp, the Global Bank team builds the core infrastructure and services that give merchants a digital bank account, helping

small businesses manage their money easily and reliably.

The Balance Management Squad sits at the core of the Global Bank Platform. Right now, our team is completing a major milestone:

consolidating and modernizing our balance management system in Europe. The next big step is creating a global transaction history

service; a single, shared platform used by all regions to give merchants consistent and transparent views of their financial

activity.

As a (Senior) Backend Engineer, you’ll help modernize existing systems while balancing innovation with stability, collaborate with

teams across regions, and build reliable services that manage diverse markets with different regulations.

If you enjoy solving complex problems on high-load systems, are curious about banking, and are looking for a team that tackles

challenges head-on, we’d love to hear from you.

What You’ll Do

Build and evolve the SumUp’s core banking services that powers ledger operations and transactions, transforming our regional

systems into a unified, scalable global platform.

Tackle complex distributed systems challenges, ensuring resilient services that continue to perform under high transaction

volumes.

Support modernization initiatives by improving observability, adding test coverage, refactoring code for long-term

maintainability, and gradually introducing new architectural patterns without disrupting live banking operations.

Contribute to key architectural decisions - build ledger and transaction history systems from the ground up, ensuring a

globally scalable banking solution for our clients.

Collaborate with teams across Risk, Treasury, Finance, and Infrastructure to ensure smooth, compliant, and reliable global

operations

Take ownership from design to production, running the services you build, monitoring their performance, and continuously

improving how we deliver high-quality software at scale.

You’ll be great for this role if

You have solid backend experience building reliable, high-volume services and you think carefully about system design, APIs,

data modeling, and how services interact.

You are proficient in Golang and comfortable learning and working with other languages as needed, e.g. Kotlin or Elixir.
You write maintainable, well-tested code, follow CI/CD best practices, and take responsibility for the software you build from

development to production.

You’re comfortable building, deploying, and running services in cloud environments like AWS using Docker and Kubernetes.
You’re eager to learn about relational databases that perform well under load and maintain data consistency.
You are a collaborator who enjoys working across regions, communicating clearly, exchanging feedback effectively, and making

thoughtful technical decisions together.

You have a curiosity for building reliable financial services and banking domain

It’s a plus if you have

Knowledge of Elixir - some of our legacy services are written in Elixir, and while it's not essential, it would be useful if

you've worked with it before

Deeper PostgreSQL experience - we rely heavily on Postgres, so if you've done performance tuning, complex queries, or schema

design, that's a plus

Experience with event streaming platforms (Kafka preferred) and modern observability stacks (Grafana, Honeycomb, etc.)

Why you should join 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 a vast set of simple and affordable

business tools to help them start, run, and grow their businesses. 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 an inclusivity and 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.

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.

Role

Senior Backend Engineer (Golang) - Balance Management

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