Fullstack Developer

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Fullstack Developer (m/w/d) full-time

freshcells systems engineering GmbH is a Düsseldorf-based software agency with a dynamic team of over 40 employees.

We do not have a hire-and-fire mentality; we prefer to kick back with cold drinks after work.

Among other vacancies, we are looking for a Fullstack Software Developer (full-time software development) to support our team in Düsseldorf.

freshcells is always on the lookout for the latest software trends and principles. To run with the most modern software stacks is part of our DNA. Docker, Kubernetes, React, NodeJS … freshcells has been an early adopter and contributor in all fields. If you feel at home in such an environment and enjoy working with talented co-workers from all over the world who challenge you and like to be challenged by you, you are the right fit for us.

Please send us your application via email to

The freshcells spirit

  • We always remain ourselves.
  • We promote individual talents.
  • We are creative nerds from a wide variety of fields.
  • We do not hide.
  • We communicate openly, honestly & fairly.
  • We build on respect, trust & responsibility.
  • We are innovation driven and willing to invest in ideas.
  • We know that the best results can only be achieved as a team.
  • We make mistakes, but we learn from them.
  • We are open, we are courageous.

What we have to offer

Kununu Open Company
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  • Flexible home office days
  • Flex-time for early risers and night owls
  • Digital training courses, available to every employee at his or her own discretion
  • Company pension plan with employer subsidy possible
  • Monthly Company Breakfast
  • Summer, Christmas and company parties
  • High-end equipment also for private use
  • A secure and long-term job
  • A dog-friendly working environment
  • Regular exchange, feedbacks, team meetings & retrospectives
  • Room for own ideas and personal development
  • Varied and exciting WebTech projects
  • International top customers and colleagues
  • Support with relocating processes
  • Free German courses for newcomers

Your Responsibilities

  • Development of modern backend applications based on Node.Js
  • Development of modern frontend applications based on React JS
  • Development of APIs based on GraphQL
  • Design and implementation of new features for sophisticated software solutions in cooperation with project management, design, and development departments
  • Writing and maintaining our automated test suites
  • Participation in continuous improvement processes

Your Qualifications

  • Very good knowledge of Node.js
  • Strong knowledge of ES 6 JavaScript as well as extensive knowledge of frameworks and libraries such as reactJS, vue.js and/or Angular
  • Experience of PHP, ideally with frameworks such as Symfony, Laravel or Yii
  • Sound experience with relational or non-relational databases
  • Good knowledge of data structure design
  • Competences in consuming and creating web services based on ReST and especially GraphQL
  • Know-how in performance optimization
  • Basic knowledge of HTML and CSS is helpful
  • Experience with agile development in a team
  • Hands-on experience with automated software testing
  • Basic knowledge in API security
  • Fluent in English

Nice to have

  • Experience with containerization technologies such as Docker etc.
  • Experience with container orchestration tools like, i.a., Kubernetes, OpenShift, or Docker Swarm
  • Knowledge of designing and adapting software to be twelve factor applications
  • Knowledge of continuous integration via tools like Jenkins
  • Experience with Next.js
  • Experience with TypeScript

Take the initiative

Please note

Applications sent by post cannot be taken into account during the application process. For this reason, application portfolios will also not be returned.