Location: Berlin, in-office

The Verification Squad's goal is to integrate SumUp with external and internal sources to automate KYC processes. This ensures compliance with AML regulations, prevents fraud, and speeds up merchant onboarding. We focus on large-scale automated verification, partnering with top data and service providers for a fast, secure onboarding experience. Our work protects against fraud and helps small merchants worldwide accept payments safely.

As a Senior Backend Engineer, you'll help evolve and support our advanced platform, with a key challenge being the transition to a fully distributed, event-driven architecture.

What you’ll do

• Collaborate with peers and stakeholders 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 these highly available, self-healing, and resilient 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

You’ll be great for this role if you have

• 5+ years of solid programming experience in one of the following languages: Java, Kotlin, or Ruby, along with 1+ year of hands-on experience in Golang
• 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, SQL databases, and modern cloud technologies (AWS, Docker, Kubernetes)
• Experienced 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
• Passionate about solving user challenges and improving products
• Enjoy retiring old systems and challenging the status quo

Why you should join SumUp

• Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our Berlin office.
• Commitment to Diversity and Inclusion: Be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced
• A dedicated annual L&D budget of €2,000 for attending conferences and/or advancing your career through further education
• Enrolment onto our VSOP program: You will own a stake in SumUp’s future success
• Corporate pension scheme where we match up to 20% of your contributions
• 30 Days Sabbatical: Enjoy the unique opportunity to take a well-deserved break with our 30 days sabbatical benefit after completing 3 years of employment with SumUp
• Referral Bonus: Earn additional rewards by referring talented individuals to join the SumUp team
• Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, relocation assistance, subsidised office lunches

About the Growth Tribe

In the Growth Tribe our purpose is to grow SumUp's multi-product merchant base.

We obsess about turning interested merchants into live merchants through offering an intuitive, trustworthy and cohesive experience from the first touch point on the marketing site to engaging with our products & services as they need them.

About SumUp

We believe in the everyday hero.

Small business owners are at the heart of all we do, so we create powerful, easy-to-use financial solutions to help them run their businesses. With a founder’s mentality and a 'team-first’ attitude, our diverse teams across Europe, South America and the United States work together to ensure that the small business owners we partner with can be successful doing what they love.

SumUp is an Equal Employment Opportunity employer that proudly pursues and hires a diverse workforce. SumUp does not make hiring or employment decisions on the basis of 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. SumUp also strives for a healthy and safe workplace and strictly prohibits harassment of any kind.

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.