Senior Software Developer (m/f/d)

As an experienced software developer, programming is your passion. You work well versed with agile methods and you know that Test Driven Development will help you reach your goal faster. You know when a solution is good enough and when you can start with a new feature. Your colleagues can learn from you, you work responsibly and you can advance your colleagues in their work.

Take the next step and join us as Lead Developer – we look forward to your own style and expertise!


  • Conception and further development of our application JustOn
  • Development on cloud computing platforms – Salesforce CRM,,, and Heroku
  • Developing own components and software products
  • Building your own development team
  • Agile software development in a daily scrum meeting with the complete team, 2-week sprints and weekly code reviews as well as version management with Mercurial


  • Interest in digital business models, e-commerce and e-invoicing
  • Very good knowledge and practical experience in object-oriented programming and the development of SaaS and PaaS
  • Know-How in web technologies like JAVA, JAVA Script, Salesforce,, Heroku, Ruby, CSS, HTML, JIRA, .NET
  • Strong communication skills, leadership qualities and an independent way of working


JustOn automates the entire invoice processing process.

We are convinced that easy-to-use business software is the key to long-term customer satisfaction. With our software and expertise, we are experts in billing and e-invoicing.
Our customers are companies with digital business models that have chosen the market leader Salesforce CRM and need applications that make life easier for their business.


Set up your working hours to suit your life situation – at JustOn, that’s exactly what we mean and live by. Let’s talk openly about which model suits you best and we’ll find a solution.

Further training and personal development are not a phrase for us: Two days of educational leave and a fixed budget of 1500€ per year are available to every employee.

You’ll also find a cheerful, motivated team, competitive compensation and a family-friendly and appreciative environment with very short decision-making paths.

apply now

Contact person:

Dr. Sten Grimmer

+49 3641 5598580

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You can expect a motivated team, flexible work time models as well as a family-friendly and appreciative atmosphere with short decision-making processes.

Become part of our team and help shape the future of e-invoicing.

We look forward to receiving your application.

apply now