Senior Backend Engineer - Bank Tribe

SumUp enables businesses to get paid easily, process orders quickly, sell online instantly, and manage their money more efficiently. We create the tools businesses need to make their business and their customer experience thrive!

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. Joining this team means you’ll play a key part in helping us build SumUp's own digital merchant bank. You’ll be part of a global, autonomous, cross-functional team that takes an aspect of our product and perfect it from concept to execution. 

As a Senior Backend Engineer (Kotlin or Golang), you'll be responsible for evolving and maintaining a high-throughput banking ecosystem for merchants inside our Global Bank Tribe. Aside from building features, you'll also support the 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.

If you'd like to gain experience building business accounts, card payment, and transfers products across Europe and Latam for SumUp's Global Bank, join us and be part of this exciting journey!

What You’ll Do

• Collaborate with a supportive global team to design and build a unified global banking platform. This includes high-level APIs for multiple regions and local implementations, ensuring high availability and observability
• Be part of the transformation team that is transforming monolithic services into decoupled, highly scalable, region-agnostic, unified global bank services
• Design, implement, and iteratively develop highly available backend services, while continuously evaluating and implementing new methods to ensure the high reliability of transfer systems
• Maintain and improve core services utilizing a modern, cloud-native technology stack (AWS, K8s), with microservices written in Go/Kotlin and Elixir.
• 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 are proficient in Golang or Kotlin and are open to learning others 
• You are experienced in developing and maintaining distributed systems and RESTful APIs
• You have experience with modern cloud technologies like AWS, and containerization tools such as Docker and Kubernetes
• You are knowledgeable in event streaming platforms and messaging brokers such as Kafka and RabbitMQ
• You feel comfortable working with SQL and NoSQL databases
• You are experienced with CI/CD tools like GitHub Actions or ArgoCD
• You take pride in your work, have a keen sense of ownership, and are dedicated to writing clear, maintainable, and testable code.
• Your curiosity and enthusiasm for solving meaningful challenges for users and a commitment to collaboration and continuous learning.
• You are comfortable pairing with your peers on a day-to-day basis, sharing knowledge and learning from each other, fostering the culture of knowledge sharing 

Any of the following would be considered a plus

• Experience with monitoring tools - Prometheus, Grafana, Honeycomb
• Experience in the fintech industry
• Experience with Elixir 
• Experience around Xtreme Programming principles

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.