About us

we are cronn

To our team

Our hearts beat for software craftsmanship, our customers, and our team! Since 2013 we have been successfully implementing software projects in Bonn, Hamburg and Białystok (PL). Always in our toolbox: Java, open-source technologies, and agility. In addition, customer orientation and quality are particularly important to us – and, of course, the fun of working together.

Our methods

Agile

Requirements often change in the course of a project! Thanks to our agile methods we are prepared for this. Continuous adaptation to new requirements allows us to react quickly to changes, always offering our customers the best solution. This speeds up software development and reduces costs.

Testdriven

Software testing tells no lies, provides security in the event of changes and is the basis for continuous integration. A good test base increases the quality of the code as well as the end product and saves effort in debugging, refactoring, and maintenance. This enables faster and higher-quality development cycles. And our developers have more time to devote to the essentials: good code!

Continuous

The status and quality of a software project requires constant checks, which results in many repetitive tasks. Manually, this could quickly become painful. That is why we rely on a smooth, automated connection between development, version management, testing and deployment to production.

Clean code

Programming languages were invented to write software in a manner intelligible to humans, then use it to solve complex problems. Therefore, source code should remain understandable. That is why we write clean code that is easy to read, understand, and maintain.

Some words by our CEO and founder

Picture of Jobst Eßmeyer

Good code with good people - that's why I founded cronn. cronn is more than just a software company for me. It is a place where the joy of good code is the focus. Both for our team, which develops it, and for the customer, who uses the software in the end.

Jobst EßmeyerCEO

Our team

A handful of people has, over time, grown into more than 150 dedicated cronners, all taking customer projects over the finish line and constantly making cronn better and better! Matters of software development, testing, and business analysis are faced head-on by our colorful teams at our 3 locations in Germany and Poland. And let us not forget the front office, HR, sales, and marketing, all keeping the wheels turning.

Meet our team
cronners making coffee
cronners during an in-house training session
cronners drinking coffee
cronners working

Our tools

  • Java

    The programming language which is the standard for high-performing and stable backends.

    Jenkins

    The standard for continuous integration. Needs but short intervals to create the current project status, which then can be tested.

  • Docker

    Rapid deployment of applications in any environment. Creates containers which hold everything the application needs to run.

    Spring

    Has integrated dependency injection in the Java enterprise environment and makes Java programming faster, easier and more secure.

    Gradle

    The best Java build tool. Fastest feedback thanks to incremental and parallel builds. Essential for continuous integration.

  • Kubernetes

    Open-source tool for automated management of container applications.

    Typescript

    Alternative to JavaScript with many advantages: code quality, security, object-oriented programming.

    Cucumber

    The BDD tool that combines specification and test documentation.

    Hibernate

    Object-oriented programming and relational databases? No problem with this ORM framework.

  • React

    An efficient and flexible framework to build high-performance interactive web interfaces.

    Playwright

    Framework that enables end-to-end tests for web applications across every browser and platform with a single API.

    Figma

    Web-based tool for creating UI designs and high-fidelity prototypes.

Our history

cronn has been around since 2013. It all started with software developer Jobst, who wanted to develop high-quality, user-friendly software, all while using the latest open-source techs, agile methodologies, a test-driven approach, and still be fun to work on. Or, as he puts it himself: He wanted to write good code with good people. The best way to implement his ideas was in his own company, so he founded one.

Since then, more than 150 people have joined us at three locations in two countries. The original spirit still permeates our corridors and offices today. Be it in project meetings, Scrum events or over our end-of-week Friday beers, at company runs or our legendary cronn celebrations: Whatever we do, we do together and with pleasure. And often right in the middle of it all: founder Jobst.

cronners playing a video game
cronners at a trade show
cronners play foosball
cronners at a meeting

Become a cronner

Employees discussing next to a whiteboard.

Our team appreciates software craftsmanship, good code, unity, and fun at work. If you also see it that way, you are welcome to join us! Here you can implement customer-oriented software projects in an experienced team and continuously develop yourself. Feel free to contact us!

kununu score - 4,6 out of 5 based on 72 reviews100% kununu recommendation rate over the past 2 yearskununu Open Company - we embrace opennesskununu Top Company - recommended by employees

Our partners

Digital Hub logoCyber Security Cluster Bonn logoGATE logoLogo of the German-Polish Chamber of Industry and CommerceDOAG logoLogo of the Cologne-Bonn Health RegionLogo of the Business CommunityLogo des BVMWWomen in Tech logoLogo of the Hamburg Logistics InitiativeLogo of the Open Source Business Community OSBA