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Senior Back-End Developer

in Ostendstrasse 110 70188 Stuttgart Baden-Württemberg or remote


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Do you enjoy developing code for dynamic modern web applications? Are you an expert on data structures and algorithms? We are looking for a Senior Back-End Developer to develop the essential code for our apps and create the basis for an innovative way of working together for over 300,000 users worldwide.

You'll work in a self-organized, international team where you get a deep dive into the Atlassian ecosystem and work with state-of-the-art technologies (e.g. AWS, Docker, Java, Spring, Node.js etc.) and development tools (e.g. Bitbucket, Bamboo, Git, IntelliJ etc.).

There is more waiting for you: plenty of company perks (e.g. free lunch), an unique working culture which fosters remote work, and wonderful colleagues who also bring their hobbies to the office (e.g. offering yoga classes).

In good company


We are K15t and, every day, we do our best to help others work better together and achieve better results. As an Atlassian Solution Partner and Marketplace Partner, we provide apps, solutions, and services for our customers to get the most out of their Atlassian tools. We proudly serve over 5,000 organizations of all sizes worldwide, including Atlassian, BMW, Robert Bosch, Lufthansa, Nasa, Spotify, and Volkswagen.

We are a team of 60 passionate people from different disciplines and 15 different countries, mainly working out of Stuttgart in an inspiring open space office in the east end, with a few remote workers spread across Germany and beyond.

We are proud of our unique collaborative culture and our journey from being a small startup to where we are today.

Senior Back-End Developer
Senior Back-End Developer

Your role at a glance

You are a member of a self-organized team, working on our apps for the Atlassian tools. Our app teams follow the Scrum methodology and collaborate cross-functional, which means that our developers, marketers, UX designers, and product managers work directly together. There are numerous topics you can work on:

  • Develop and implement new features and improvements for our apps, incl. analyzing feature feasibility, creating technical feature specs and much more.
  • Take care of refactoring and maintaining the code base of our apps.
  • Write and maintain automated tests.
  • Empower your colleagues with your technical knowledge, e.g. by mentoring junior developers and sharing your knowledge in internal talks.
  • Provide input and review user documentation from a technical point of view.
  • Create release artefacts and cloud deployments for the Atlassian marketplace.

More reasons to apply

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Dedicated Innovation Time

Our 24h  Hacketse happens three times/year.
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Continuous Learning

Work-related conferences, regular lunch & learn sessions, and much more.
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Equipment You Love

Mac or Windows? You decide.
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Paid Volunteer Time

We’re using two days a year  to give back for a good cause.
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Family Friendly

We know that there can be a time when your family needs you more than we do.
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Free Food & Drinks

You can’t do a good job when you’re hungry.

Qualities you are proud of

  • Experience in building and maintaining back-end code for dynamic modern web applications – additionally, front-end experience helps you to quickly come on board in our cross-functional team.
  • Passion for clean, portable, and well-documented code – thereby you ensure fast processes.
  • Excellent understanding of server-side Java – knowing Jersey, Spring, and OSGi is a plus.
  • Hands-on experience with Maven, Git, and designing REST APIs – these experiences build the basis for your daily work.
  • Basic understanding of client-side JavaScript – we use technologies like React, TypeScript, and Redux.
  • Ideally, a degree in applied Computer Science, Software Engineering, Information Technology or similar – if not, we'd still love to receive your application.

Your contact

Picture of Lukas Keller
Lukas Keller
Talent & Recruiting

If you have any questions about an open position, I would be happy to help you via or +49 711 935 935 30.

Apply now

This will take you to Workable, our job application system.


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