Senior Software Engineer (Golang) - Card Acquiring

SumUp·Sofia, Bulgaria·Posted 31 October 2026

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About the role

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. Now, we are taking a major step forward in our Payments journey: building our own acquiring capability in Europe. About the team You’ll join a growing Payments team working on the next generation of SumUp’s payment capabilities. The team is building and evolving foundational systems that will improve the reliability, scalability and flexibility of our products. This is an opportunity to work on a new and important area of our platform, where your technical decisions will help shape how SumUp supports millions of small businesses around the world. You’ll have the chance to contribute from an early stage, solve complex engineering challenges…

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