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
- Frontend development with JavaScript and TypeScript
- Learning path to explore together with experienced developer assigned to you as your mentor
- TDD, Pair Programming, Code Reviews
- Small and experienced teams where you can learn by doing
- Knowledge Sharing, Craftsmanship, Continuous Improvement
- Development of business-critical, customer-specific software solutions
We’d love it if you have the following qualifications
- You know basics of JavaScript and TypeScript
- …but you are still willing to learn and get hands-on experience
- Quality, agility, open-mindedness and passion describe your working style
- Clean Code and Software Craftsmanship are no foreign words for you
- You can communicate in English in speaking as well as in writing
- You are going to love writing tests as much as productive code
- 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

