Frontend Developer I UX / UI Designer (m/f/d)

You are keen on design and develop modern and user-friendly user interfaces? You like to create mockups and prototypes? And you want to define the user interaction with our software and so create a foundation for constant improvement of our product user interface?

Then we are looking for exactly you and your expertise in user experience and usability. Join us and you will see your drafts becoming reality with the help of our professionell developers. 


  • Conception, design and development of user interfaces
  • Definition of user interaction and usability
  • Creation of mockups and prototypes
  • Implementation of UI designs in software 


  • Experience with user interface-libraries like React, AngularJS, Vue.js
  • Knowledge in html, css and responsive webdesign
  • Practical experience with modern development tools (Mercurial, Bitbucket, JIRA, Docker) are of use
  • Willing to constantly learn and professional exchange

The position is suitable for:

  • Frontend developers who want to develop their UI and UX skills
  • UI/UX experts who wants to implement their designs

In both cases, further training is expressly desired and encouraged by JustOn.


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.

apply now

Contact person:

Dr. Sten Grimmer

+49 3641 5598580

Share with friends



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

Job Location

Nadia Groetsch