Software engineer Kotlin (m/f/d)

Do you like to make a change in the FitTech industry with an agile and fast moving team? How about a mentality that values your opinions and ideas? If you are passionate about software development using cutting-edge technologies such as Kotlin and want to actively participate in the digitization of an entire industry, then you are exactly right with us. Be a part of the digital transformation of the fitness industry.

Your position in our TEAM

  • Develop actively our cloud-based FinTech platform using latest technologies and frameworks like Java/Kotlin, VueJS/TypeScript, SpringBoot/Micronaut and many more.
  • Create high quality software components in an agile environment and contribute ideas thanks to flat hierarchies
  • Freedom to think outside the box and see the big picture of our applications
  • Contribute to a market-leading, Kubernetes-powered FinTech platform hosted on AWS and independently develop further fields of activity (DevOps, QA, build management)
  • Develop based on strict modularization, event-driven decoupling and REST APIs

What you bring to the table

  • Experiences in the development and architecture of cloud-based software in Java and/or Kotlin and knowledge in JPA/Hibernate, ideally also in Spring Boot
  • Existing front-end skills are welcome and we support the development into a full stack position if desired
  • Knowledge of object-oriented design and SOLID principles, quality awareness, desire for continuous development
  • Experience with automated tests (especially unit and integration tests)
  • Interest in new programming trends, enjoy working in a team, and confident language skills in English or German


  • An attractive workplace in the heart of Hamburg or Kraków an flexible arrangement of working time and location possible
  • Our own fitness studio that can be used free of charge, including a personal trainer for all colleagues
  • Our own CashBack sports program "MySports", which we use to subsidize your sports activities
  • High level of personal responsibility, quick assumption of responsibility and leads who communicate with you at eye level
  • Supply of drinks, fresh fruit and snacks
  • An attractive BAV subsidy and HVV benefits
  • Flat hierarchies and a motivated and dynamic team

Who we are

As Sport Alliance, we make it easier for people to access sport by digitalizing the fitness industry. As the market leader in Germany, we rely on the state-of-the-art technologies and methods to create a cloud-based platform that can map all relevant business processes from independent gyms to international chains.
Building on this, we have created a unique ecosystem of innovative products and services in the areas of fintech, e-commerce and lead generation.
The Sport Alliance group consists of and Pay Due and we’re not done yet. Our offices in Hamburg and Cracow are located in the heart of the city centre. Around 200 colleagues are working on new ideas and solutions to lead the industry into the future.

Sounds good?

Then become a part of our team and apply now online. If you have any questions, then feel free to send a mail to

Due to recent events: In order to protect you and us, our job interviews in the first step are currently only conducted by phone or video phone.  We are also there for you in these special times and look forward to getting to know you.

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