become a cronner_


wir entwickeln software - our slogan may sound simple, but it stands for everything that makes a cronner. Above all we deliver exceptional and carefully tested software, so that our clients can concentrate on achieving their own success - no worries, no doubts.

Continually delivering such high quality requires a team of passionate cronners who are constantly developing their skills, have the client’s best interest at heart and who keep their eye on new technologies and tools. Of course, not everyone is a wizard at everything - we’re also just human - which is why we organise in teams, which allow us to even out any weaknesses and accumulate our strengths.

Have you found yourself in our values and want to become a cronner? Have a look at our job openings and see if you find something that fits!

We are searching in Bonn:

If:

  • Quality, agility, open-mindedness and passion describe your working style
  • Clean Code and Software Craftsmanship are no foreign words for you
  • You are always looking for improvement
  • You are fluent in German and English in speaking as well as in writing
  • You, as a team player, enjoy working independently and on your own responsibility
  • You love writing tests as much as productive code
  • You do not lose sight of the goal
  • You enjoy refactoring
  • But you prefer to let your computer do your work for you

… then we want to get to know you.

If, on top of this, you can boast solid experience with a few of the following tools:

  • Spring (Boot/Cloud)
  • EJB 3.x, JAX-WS und JAX-RS
  • Gradle, Git, SonarQube, Jenkins
  • JUnit, Hamcrest, Mockito
  • MariaDB, Oracle, PostgreSQL, MongoDB
  • Docker
  • Machine Learning, Neural Networks, Artificial Intelligence
  • Amazon Web Services, Microsoft Azure, Google Cloud
  • Microservices
  • Reactive Programming

… then we absolutely must get to know you!

We may convince you to join us with:

  • Our teams and our abilities
  • Interesting and challenging software development projects
  • Hardware and equipment according to your preferences
  • Freedom to operate and responsibility to take over
  • An annual training budget and 2 days special leave for personal education
  • Flexible working hours, 30 days of vacation and home office days
  • A cool office located at „Bonner Bogen“
  • Job ticket
  • Employee events
  • Participation in conferences and engagement in the Java community
  • Equal opportunities and diversity within the staff

… and not least with an attractive employment contract.

Your tasks are:

  • Backend development with Java with a low frontend share
  • Development of business-critical, customer-specific software solutions
  • TDD, Pair Programming, Code Reviews
  • Collaboration in agile teams
  • Knowledge Sharing, Craftsmanship, Continuous Improvement
  • Look outside the box

Too good to be true? Send us an email to and find out for yourself!

If:

  • Quality, agility, open-mindedness and passion describe your working style
  • Clean Code and Software Craftsmanship are no foreign words for you
  • You are always looking for improvement
  • You are fluent in German and English in speaking as well as in writing
  • You, as a team player, enjoy working independently and on your own responsibility
  • You love writing tests as much as productive code
  • You do not lose sight of the goal
  • You enjoy refactoring
  • But you prefer to let your computer do your work for you

… then we want to get to know you.

If, on top of this, you can boast solid experience with a few of the following tools:

  • JavaScript/TypeScript
  • ReactJS
  • NPM, Webpack, Babel
  • Mocha/Jest/QUnit
  • Cucumber, Selenium
  • Git, SonarQube, Jenkins
  • Mobile-First, Offline-First Design

… then we absolutely must get to know you!

We may convince you to join us with:

  • Our teams, great colleagues and our abilities
  • Interesting and challenging software development projects
  • Hardware and equipment according to your preferences
  • Freedom to operate and responsibility to take over
  • Flexible working hours, 30 days of vacation and home office days
  • A cool office located at „Bonner Bogen“
  • Job ticket
  • Employee events
  • Participation in conferences and engagement in the Java community
  • Equal opportunities and diversity within the staff

… and not least with an attractive employment contract.

Your tasks are:

  • Frontend development with JavaScript and TypeScript
  • Development of business-critical, customer-specific software solutions
  • TDD, Pair Programming, Code-Reviews
  • Collaboration in agile teams
  • Knowledge Sharing, Craftsmanship, Continuous Improvement
  • Look outside the box

Too good to be true? Send us an email to and find out for yourself!

If:

  • Quality, agility, open-mindedness and passion describe your working style
  • Clean Code and Software Craftsmanship are no foreign words for you
  • You are always looking for improvement
  • You are fluent in German and English in speaking as well as in writing
  • As a team player, you enjoy working independently and on your own responsibility
  • You love writing tests as much as productive code
  • You do not lose sight of the goal
  • You enjoy refactoring
  • But you prefer to let your computer do your work for you

… then we want to get to know you.

If, on top of this, you can boast solid experience with a few of the following tools:

  • Spring (Boot/Cloud)
  • JAX-WS und JAX-RS
  • ReactJS, TypeScript, Webpack
  • Gradle, Git, SonarQube, Jenkins
  • JUnit, Cucumber, Selenium, testcontainers
  • MariaDB, Oracle, PostgreSQL, MongoDB
  • Docker, Ansible
  • Amazon Web Services, Microsoft Azure, Google Cloud
  • Machine Learning, Neural Network, Artificial Intelligence
  • Microservices, Micro Frontends
  • Reactive Programming

… then we absolutely must get to know you!

We may convince you to join us with:

  • Our teams and our abilities
  • Interesting and challenging software development projects
  • Hardware and equipment according to your preferences
  • Freedom to operate and responsibility to take over
  • An annual training budget and 2 days special leave for personal education
  • Flexible working hours, 30 days of vacation and home office days
  • A cool office located at „Bonner Bogen“
  • Job ticket
  • Employee events
  • Participation in conferences and engagement in the Java community
  • Equal opportunities and diversity within the staff

… and not least with an attractive employment contract.

Your tasks are:

  • Full-Stack or Backend development with Java
  • Development of business-critical, customer-specific software solutions
  • TDD, Pair Programming, Code Reviews
  • Collaboration in agile teams
  • Knowledge Sharing, Craftsmanship, Continuous Improvement
  • Look outside the box

Too good to be true? Send us an email to and find out for yourself!

If:

  • You have at least 2 years of relevant work experience in Java Software Development or at least 1 year relevant work experience in DevOps / Systems Engineering
  • Continuous Delivery and Enterprise Integration are no foreign words for you
  • You like to deal with complex systems and like to advance automation thinking
  • German and English are fluent over your fingers and tongue
  • You like to work agile and get to the bottom of problems
  • You work independently and on your own responsibility
  • You develop your own tools for support, not just awk
  • You think and act customer-oriented
  • You like to communicate with peolpe

… then we want to get to know you.

If, on top of this, you can boast solid experience with a few of the following tools:

  • Linux, Shell Prgramming
  • Gradle, SonarQube, Jenkins
  • MySQL, PostgreSQL
  • Jira, Git
  • Docker, Ansible, Kubernetes
  • Amazon Web Services, Microsoft Azure, Google Cloud
  • Microservices
  • Liquibase

… then we absolutely must get to know you!

We may convince you to join us with:

  • Our teams, great colleagues and our abilities
  • Interesting and challenging software development projects
  • Hardware and equipment according to your preferences
  • Freedom to operate and responsibility to take over
  • Flexible working hours, 30 days of vacation and home office days
  • A cool office located at „Bonner Bogen“
  • Job ticket
  • Employee events
  • Participation in conferences and engagement in the Java community
  • Equal opportunities and diversity within the staff

… and not least with an attractive employment contract.

Your tasks are:

  • Take care of business software in test and production environments at regular business hours
  • Search, find and, if possible, eliminate causes of errors (usually 3rd level support)
  • Being the contact person for partner systems
  • Operation of incident management tools and processes

Too good to be true? Send us an email to and find out for yourself!

If:

  • You enjoy analyzing complex systems
  • And you have proven this in your previous occupations
  • You are independent and responsible
  • You are a people’s person
  • and like putting your observations to paper
  • You achieved a better-than-average degree in Computer Science, Mathematics, Physics or Electrical Engineering - bonus points for a PhD
  • You are well-organised and never let the goal out of your sights

…then we want to get to know you.

When, on top of this, you can boast solid experience with a few of the following tools and technologies:

  • Java, Object Orientated Programming and UML
  • DITA, Docbook or Markdown Languages
  • Relational Databases and SQL
  • Eclipse, Git
  • JEE or Spring
  • Linux

… then we absolutely must get to know you!

We are certain we can convince you to work with us by providing:

  • An experienced and skilled team
  • Interesting and challenging software development projects
  • Flexible working hours and Home Office days
  • Hardware and tools to match your expectations
  • A company car, a company phone and a job ticket
  • Opportunities to take part in conferences and engage with the Java community

… and, last but not least, an appealing contract.


Too good to be true? Send us an email to and find out for yourself!

If:

  • You have at least two years of experience as a Technical Lead in the Java field
  • or are confident that your experience as a Java developer would allow you to take up the part
  • You are fluent in speech and writing in German and English
  • You can confidently make decisions regarding architecture and design
  • and can convince your team and clients of your choices
  • You are readily take up responsibilities
  • and are chomping at the bit to get things done
  • You consider yourself up-to-date with the latest technologies
  • but you’re not too obsessed with technology

… then we want to get to know you.

When, on top of this, you can boast solid experience with a few of the following tools and technologies:

  • Spring (Boot/Cloud)
  • JAX-WS und JAX-RS
  • ReactJS, TypeScript, Webpack
  • Gradle, Git, SonarQube, Jenkins
  • JUnit, Cucumber, Selenium, testcontainers
  • MariaDB, Oracle, PostgreSQL, MongoDB
  • Docker, Puppet, Vagrant, Ansible
  • Amazon Web Services
  • Microservices, Micro Frontends

… then we absolutely must get to know you!

We are certain we can convince you to work with us by providing:

  • An experienced and skilled team
  • Interesting and challenging software development projects
  • Flexible working hours and Home Office days
  • Hardware and tools to match your expectations
  • A company car, a company phone and a job ticket
  • Opportunities to take part in conferences and engage with the Java community

… and, last but not least, an appealing contract.

Your responsibilities would include:

  • Designing, implementing and introducing software for companies
  • Taking over project management from teams of developers
  • Understanding and analysing our clients’ requirements, and translating them into software

Too good to be true? Send us an email to and find out for yourself!

If:

  • You have at least two years relevant job experience in IT enterprise support
  • You don’t consider continuous delivery and enterprise integration to be alien terms
  • You enjoy working with complex systems
  • You can fluently speak and write German and English
  • You enjoy getting to the bottom of problems
  • You are independent and responsible
  • You develop your own tools to provide better support
  • and not only in awk, for that matter
  • You work and think in a client-oriented manner
  • You are a people’s person

… then we want to get to know you.

When, on top of this, you can boast solid experience with a few of the following tools and technologies:

  • Linux, Shell Programming
  • Jenkins, Gradle
  • MySQL, PostgreSQL
  • Jira, Git
  • SonarQube, Jenkins
  • Docker, Puppet, Vagrant
  • Liquibase

… then we absolutely must get to know you!

We are certain we can convince you to work with us by providing:

  • An experienced and skilled team
  • Interesting and challenging software development projects
  • Flexible working hours and Home Office days
  • Hardware and tools to match your expectations
  • A company car, a company phone and a job ticket
  • Opportunities to take part in conferences and engage with the Java community

… and, last but not least, an appealing contract.

Your responsibilities would include:

  • Maintenance of company software in a test and production environment within regular business hours
  • Getting to the root of problems - and solving them, where possible
  • Being a point of contact for partner systems
  • Servicing of incident management tools and processes

Too good to be true? Send us an email to and find out for yourself!

If:

  • You like to work towards goals as part of a team
  • You are skilled in the development of applications or software
  • You have experience in Application Design (UI), Visual Design and Interaction Design (UX)
  • You know what a website looks like and how it works
  • You can show us your portfolio
  • You are fluent in German and English
  • You Are open and willing to adapt
  • You are independent and responsible
  • and don’t lose sight of the goal

… then we want to get to know you.

When, on top of this, you can boast solid experience with a few of the following tools, frameworks and methods:

  • Wireframing
  • Design tools, e. g. Sketch
  • Prototyping, e. g. with InVision
  • Image processing, e. g. Photoshop
  • Mockups with HTML/CSS/JavaScript
  • Response Design
  • Agile Development, Scrum

… then we absolutely must get to know you!

We are certain we can convince you to work with us by providing:

  • An experienced and skilled team
  • Interesting and challenging development projects
  • Flexible working hours and Home Office days
  • Hardware and tools to match your expectations
  • A cool office located at „Bonner Bogen“
  • Job ticket
  • Opportunities to take part in conferences

… and, last but not least, an appealing contract.

Your responsibilities would include:

  • You understand conceptual ideas and turn them into something useful and valuable
  • You advise customers and product owners in product design
  • You design workflows and experiences that feel simple and elegant
  • and cooperate with developers in HTML, CSS and JavaScript to implement them
  • You give feedback to your colleagues and help us to get better and better at what we do

Too good to be true? Send us an email to and find out for yourself!

We are searching in Hamburg:

If:

  • Quality, agility, open-mindedness and passion describe your working style
  • Clean Code and Software Craftsmanship are no foreign words for you
  • You are always looking for improvement
  • You are fluent in German and English in speaking as well as in writing
  • You, as a team player, enjoy working independently and on your own responsibility
  • You love writing tests as much as productive code
  • You do not lose sight of the goal
  • You enjoy refactoring
  • But you prefer to let your computer do your work for you

… then we want to get to know you.

If, on top of this, you can boast solid experience with a few of the following tools:

  • Spring (Boot/Cloud)
  • EJB 3.x, JAX-WS und JAX-RS
  • Gradle, Git, SonarQube, Jenkins
  • JUnit, Hamcrest, Mockito
  • MariaDB, Oracle, PostgreSQL, MongoDB
  • Docker
  • Machine Learning, Neural Networks, Artificial Intelligence
  • Amazon Web Services, Microsoft Azure, Google Cloud
  • Microservices
  • Reactive Programming

… then we absolutely must get to know you!

We may convince you to join us with:

  • Our teams and our abilities
  • Interesting and challenging software development projects
  • Hardware and equipment according to your preferences
  • Freedom to operate and responsibility to take over
  • An annual training budget and 2 days special leave for personal education
  • Flexible working hours, 30 days of vacation and home office days
  • A cool office located in downtown Hamburg
  • Employee events
  • Participation in conferences and engagement in the Java community
  • Equal opportunities and diversity within the staff

… and not least with an attractive employment contract.

Your tasks are:

  • Backend development with Java with a low frontend share
  • Development of business-critical, customer-specific software solutions
  • TDD, Pair Programming, Code Reviews
  • Collaboration in agile teams
  • Knowledge Sharing, Craftsmanship, Continuous Improvement
  • Look outside the box

Too good to be true? Send us an email to and find out for yourself!

If:

  • Quality, agility, open-mindedness and passion describe your working style
  • Clean Code and Software Craftsmanship are no foreign words for you
  • You are always looking for improvement
  • You are fluent in German and English in speaking as well as in writing
  • As a team player, you enjoy working independently and on your own responsibility
  • You love writing tests as much as productive code
  • You do not lose sight of the goal
  • You enjoy refactoring
  • But you prefer to let your computer do your work for you

… then we want to get to know you.

If, on top of this, you can boast solid experience with a few of the following tools:

  • Spring (Boot/Cloud)
  • JAX-WS und JAX-RS
  • ReactJS, TypeScript, Webpack
  • Gradle, Git, SonarQube, Jenkins
  • JUnit, Cucumber, Selenium, testcontainers
  • MariaDB, Oracle, PostgreSQL, MongoDB
  • Docker, Ansible
  • Amazon Web Services, Microsoft Azure, Google Cloud
  • Machine Learning, Neural Network, Artificial Intelligence
  • Microservices, Micro Frontends
  • Reactive Programming

… then we absolutely must get to know you!

We may convince you to join us with:

  • Our teams and our abilities
  • Interesting and challenging software development projects
  • Hardware and equipment according to your preferences
  • Freedom to operate and responsibility to take over
  • An annual training budget and 2 days special leave for personal education
  • Flexible working hours, 30 days of vacation and home office days
  • A cool office
  • Employee events
  • Participation in conferences and engagement in the Java community
  • Equal opportunities and diversity within the staff

… and not least with an attractive employment contract.

Your tasks are:

  • Full-Stack or Backend development with Java
  • Development of business-critical, customer-specific software solutions
  • TDD, Pair Programming, Code Reviews
  • Collaboration in agile teams
  • Knowledge Sharing, Craftsmanship, Continuous Improvement
  • Look outside the box

Too good to be true? Send us an email to and find out for yourself!

If:

  • Quality, agility, open-mindedness and passion describe your working style
  • You enjoy software development and have been doing it for at least three years in Java
  • You like to evaluate and use new technologies
  • And yet retain a clear sense of cost and benefit
  • You convince customers and your team with your technical skills and your personality
  • You are always looking for improvement
  • Clean code and software craftsmanship are no foreign words to you
  • You are fluent in German and English in speaking as well as in writing
  • You, as a team player, enjoy working independently and on your own responsibility

… then we want to get to know you.

If, on top of this, you can boast solid experience with a few of the following tools:

  • Spring (Boot/Cloud)
  • EJB 3.x, JAX-WS und JAX-RS
  • Gradle, Git, SonarQube, Jenkins
  • JUnit, Hamcrest, Mockito
  • MariaDB, Oracle, PostgreSQL, MongoDB
  • Docker
  • Machine Learning, Neural Networks, Artificial Intelligence
  • Amazon Web Services, Microsoft Azure, Google Cloud
  • Microservices
  • Reactive Programming

… then we absolutely must get to know you!

We may convince you to join us with:

  • Our teams and our abilities
  • Interesting and challenging software development projects
  • Hardware and equipment according to your preferences
  • Freedom to operate and responsibility to take over
  • An annual training budget and 2 days special leave for personal education
  • Flexible working hours, 30 days of vacation and home office days
  • A cool office located in downtown Hamburg
  • Employee events
  • Participation in conferences and engagement in the Java community
  • Equal opportunities and diversity within the staff

… and not least with an attractive employment contract.

Your tasks are:

  • As a consultant you represent cronn at the customer’s site
  • No travelling
  • Analysis of needs and requirements
  • Development of solution concepts, prototypes and productive business-critical software solutions
  • TDD, Pair Programming, Code Reviews
  • Collaboration in small or large agile teams
  • Knowledge Sharing, Craftsmanship, Continuous Improvement
  • Look outside the box

Too good to be true? Send us an email to and find out for yourself!

We are searching in Białystok:

If:

  • You have at least two years of experience as a Technical Lead in the Java field
  • or are confident that your experience as a Java developer would allow you to take up the part
  • You are fluent in speech and writing in German and English
  • You can confidently make decisions regarding architecture and design
  • and can convince your team and clients of your choices
  • You are readily take up responsibilities
  • and are chomping at the bit to get things done
  • You consider yourself up-to-date with the latest technologies
  • but you’re not too obsessed with technology

… then we want to get to know you.

When, on top of this, you can boast solid experience with a few of the following tools and technologies:

  • Spring (Boot/Cloud)
  • JAX-WS und JAX-RS
  • ReactJS, TypeScript, Webpack
  • Gradle, Git, SonarQube, Jenkins
  • JUnit, Cucumber, Selenium, testcontainers
  • MariaDB, Oracle, PostgreSQL, MongoDB
  • Docker, Puppet, Vagrant, Ansible
  • Amazon Web Services
  • Microservices, Micro Frontends

… then we absolutely must get to know you!

We are certain we can convince you to work with us by providing:

  • An experienced and skilled team
  • Interesting and challenging software development projects
  • Flexible working hours and Home Office days
  • Hardware and tools to match your expectations
  • Opportunities to take part in conferences and engage with the Java community

… and, last but not least, an appealing contract.

Your responsibilities would include:

  • Designing, implementing and introducing software for companies
  • Taking over project management from teams of developers
  • Understanding and analysing our clients’ requirements, and translating them into software

Too good to be true? Send us an email to and find out for yourself!
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