DevOps & Release Lead

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.  The payments processing platform, consisting of other sub-platforms, has powered SumUp’s global business for more than 10 years now. It’s developed in Sofia by the Payments Tribe, composed of several teams (squads). Each squad is cross-functional, autonomous and co-located, working on its part of the platform end-to-end.  We are scaling and improving existing products, while developing new ones - an exciting time to join. You would make an impact by improving and co-creating our existing and new microservices architecture platforms, solving scaling and new development challenges. Scalability and high availability are among our focus areas.  What you’ll do * Design and evolve systems that process millions of transactions reliably and at scale * Build and maintain backend services in a microservices architecture * Contribute to API design for internal services and external integrations * Write clean, maintainable, and scalable code with strong test coverage * Participate in architectural discussions and drive technical decisions * Collaborate closely with engineers, QA, and DevOps to deliver production-ready systems * Continuously improve engineering practices, including leveraging AI to iterate faster You will be great for this role if you have: * Strong programming experience in any modern language (e.g. Go, Java, Python, Kotlin, etc.). We care more about how you think and design systems than the specific language you use * Solid understanding of system design, scalability, and distributed systems * Experience building APIs and working with data storage systems * Ability to learn new technologies quickly and pragmatically * Strong problem-solving skills and a structured way of thinking * Ownership mindset and collaborative approach to teamwork * Interest in incorporating AI as part of your development workflow Nice to have: * Experience with cloud platforms (e.g. AWS) * Familiarity with containers and orchestration (Docker, Kubernetes) * Experience with event-driven systems and messaging (e.g. Kafka) If you don’t meet every requirement but are excited about the role, we’d still love to hear from you. Why you should join SumUp * Make an impact on a global scale - our systems serve millions of merchants * Learn from experienced engineers while working on complex, real-world problems * Be part of a tech-agnostic team that uses the right tools for the job * Collaborate with SumUppers worldwide on large-scale fintech products used by millions, based in our Sofia office (office-first setup). * Access a €2,000 annual L&D budget to attend conferences or advance your career through education. * Enjoy 25 days of paid leave (increasing with tenure), plus paid vacations for special occasions and a 1-month sabbatical every 3 years. * Benefit from extra perks like health and life insurance, co-sponsored Multisport cards, childbirth/adoption bonuses, discounts, a referral program, 100 EUR monthly food vouchers, 40 EUR flexible benefits, and more. 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, color, 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.

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 several 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.