Software Engineer

At SumUp, we create tools that help small businesses get paid easily, manage money confidently, and grow sustainably. Our mission is to empower merchants around the world, and at the heart of that mission is a robust, scalable Payments Platform developed in Sofia.

We’re now expanding this platform with a new dedicated Pricing team – and we’re looking for Software Engineers (Mid & Senior) who want to build core services from the ground up and make a lasting impact across SumUp.

About the team

Pricing is an important part of any payments business. The Pricing team will build and own the services that determine how SumUp’s products and transactions are priced worldwide. This includes maintaining existing pricing tools and creating a future-ready pricing platform that enables precision, flexibility, and transparency.

We’ll be a small, high-impact team with strong engineering ownership. You’ll help define how pricing logic is modeled, how it evolves, and how it's applied at scale for millions of transactions across our ecosystem.

About the role

As a Senior Software Engineer in our Pricing team, you’ll help design, build, and maintain a scalable and compliant pricing platform for SumUp’s payment ecosystem. You’ll participate in architectural discussions, guide technical decisions, and deliver projects independently or in collaboration with your squad.

Your work will directly shape how SumUp evolves its pricing capabilities and supports business growth.

What you’ll do

• You’ll design, develop, and maintain scalable backend services for our pricing systems.
• You’ll develop backoffice tools for pricing management.
• You’ll write high-quality, maintainable, and scalable code that meets coding standards and best practices.
• You’ll provide comprehensive documentation and automated good test coverage, improve code quality
• You’ll collaborate with other software, QA and DevOps engineers to ensure smooth deployment, continuous integration, and support for the software that we deliver in production environments.
• You’ll actively participate in code reviews with other software engineers to improve code quality and maintainability.
• You’ll support technical discussions during requirements analysis and scope definition.
• You’ll participate in team retrospectives and document lessons learned.

You’ll be great for this role if you have

• You have at least 3+ years of programming experience, including in Golang
• You have experience with building and consuming RESTful APIs 
• You’re familiar with Docker, AWS, Kubernetes (user, not admin experience)
• You have a DevOps mindset
• You have experience with SQL & NoSQL DBs. We’re working with Postgres and Kafka
• You understand fundamental system architecture, software design principles, data modeling, and API design
• You are have an open to feedback, collaborative approach to teamwork and excellent problem-solving skills
• You take pride in engineering and have a keen sense of ownership of the work that you do

Why you should join SumUp

• You’ll play a key role in a high-impact team working on one of the most critical services at SumUp, while being part of a global scale-up of 3000+ people from 60+ countries, spread across 4 continents.
• Shape the future of SumUp’s pricing capabilities and business strategy.
• You’ll receive 25 days’ paid leave, increasing with tenure, and paid vacation for certain occasions. You’d enjoy a paid 1 month Sabbatical vacation every 3 years.
• You’ll receive an individual learning budget and can take 10 days paid educational leave to expand your skillset. You'll have access to hackathons.
• You'd enjoy other great benefits such as additional health and life insurance; funded therapy & coaching sessions with licensed psychotherapists; co-sponsored Multisport card; Child birth/adoption bonus; free shuttle buses from Joliot-Curie metro station; a long list of discounts; attractive referral programme; monthly budget for food vouchers (100 EUR)  and flexible benefits (40 EUR) , and more. 

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 37 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 teamOpens in new window 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. Discover more about our culture and opportunities on our careers website, and follow our journey on LinkedInOpens in new window, InstagramOpens in new window, and TikTokOpens in new window.

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.