we are cronn
We are cronn – a software company based in Bonn with branches in Hamburg and Białystok (PL). Software development is our passion. We rely on Java, open source – and last but not least, our experienced team. We use all of this to create business-critical software for our clients in the Cologne/Bonn and Hamburg areas, or to advise them on matters of architecture, tools, or methodology.



What you can expect with us
- You will develop business-critical individual software for customers in a cronn team
- Your team approaches their work using methods such as TDD and pair programming
- Your daily routine is characterized by agile collaboration with your team (developers, testers, analysts and UX/UI designers) as well as external stakeholders
- Developed with JavaScript/TypeScript, React, Angular, Selenium/Playwright/Cypress, Jenkins/GitLab – But you don't have to be an expert in all areas
- If you also have other skills (e.g. vue.js, Node.js etc.), we're cool with that
- You are a role model for the juniors in the team because you take responsibility for your part and you never lose sight of the overall success of the team
We’d love it if you have the following qualifications
- You have many years of experience in (agile) software development with the above-mentioned stack
- You want to keep learning, but on the other hand you also enjoy sharing your own knowledge within the team
- You like clean code and enjoy writing tests as much as productive code
- You are fluent in English, knowledge of German is welcome
- You have successfully completed a subject-related course of study
- You are willing to work on-site in our cool office in Białystok
- You have successfully completed a subject-related course of study (or are in the process of doing so)
- You are willing to work on-site in our cool office in Białystok
- on top of this, you want to gain experience with a few of the following tools and technologies: ReactJS, Redux, MobX, NPM, Webpack, Babel, Mocha/Jest/QUnit, Cucumber, Selenium, Testcontainers, Git, SonarQube, Jenkins; Mobile-First-, Offline-First-Design
What we offer
- Work-life balance: Flexible working hours, 30 days’ holiday and the option to work from home
- Our corporate culture: Freedom to be creative, work independently and collaborate as equals
- Personalised professional development: An annual training budget and two days’ special leave
- Cutting-edge technology & modern hardware: You choose your own devices, operating systems and tools
- A welcoming atmosphere & a culture of in-office presence: Our modern offices offer ergonomic workstations and an open, team-oriented atmosphere – the ideal setting for our active culture of in-office presence
- Team spirit: Team cohesion is strengthened at both large and small team events
No fit? No problem
Haven’t found a job offer that exactly fits your profile? Don’t worry – we welcome unsolicited applications.
Send in your application now

