Product Developer (m/f/d) Salesforce

You are interested in Salesforce and its technological environment, but you don’t want to jump from project to project? A team of experts with high standards is for you the right working atmosphere? You know when a solution is good enough and you can start with a new feature? You take responsibility for your work and love constructive feedback?

Four times “yes”? Then we should definitely get to know each other.


  • Conception and further development of our billing application JustOn
  • Development on the cloud computing platforms of (Salesforce CRM,, and Heroku)
  • Implementation of individual JustOn components
  • Agile software development in a daily scrum meeting with the complete team, 2-week sprints and continuous code reviews
  • Development of interfaces for third party systems


Your formal education is not the most important thing for us. But you should have at least one year of experience in developing salesforce applications which means:

  • You have a good knowledge and some experiences of Lightning Components, APEX and the Salesforce platforms, especially of the developing processes of these platforms
  • Ideally you already have salesforce certifications like platform developer
  • You have some knowledge and interest in e-business, e-billing and business processes
  • You are passionate about sustainable product development
  • You are willing to develop yourself both professional and personal
  • Your working place will be Jena or you can be in our Jena office for at least six months of onboarding

If you do not have any Salesforce background, we also accept at least three years of experience in programming with object-oriented languages like PHP, Java or C++.


JustOn stands for the successful automation of financial processes. As leading software providers on the Salesforce platform, we support companies in digitising their processes around billing, payment and accounting.
With our innovative software products, medium-sized companies around the world monetize every business model directly, including well-known customers such as Delivery Hero, Christie’s, and Verizon Media.
As company, we assume social responsibility. We preserve existing jobs and create new ones, we support social as well as other charitable projects, and we are committed to environmental protection.


With us, every second Friday is free – with full pay. This working time model corresponds to our guiding principle of new work: arrange your working life to suit your life situation. At JustOn, that’s exactly what we mean and live by.
Whether you work in our beautiful office with high-quality equipment or from home is up to you. After an onboarding phase, during which the team would like to get to know you personally, the working location is flexible.
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.
In addition, you’ll also find a cheerful, motivated team, competitive compensation and a family-friendly and appreciative environment with very short decision-making paths.

Job Location

We offer you a place in our headquarters in Jena and our location in Erfurt. In some positions, you can also work from France or Spain. Preferred regions are the Loire-Atlantique department and the Valencia region. Let’s talk about it and find the right model for you.

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