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(Senior) JavaScript Engineer (m/f/x)

YOC is a technology company and develops software for the digital advertising market. With the help of our programmatic trading platform VIS.X® we enable an optimal advertising experience for advertisers, publishers and users of the mobile internet and mobile applications. By using the platform VIS.X® and YOC’s proprietary ad formats, advertisers can increase brand awareness in combination with high-quality advertising inventory. Renowned premium publishers offer global media reach and benefit from the high monetization of our platform VIS.X®. As a pioneer in mobile advertising, the company has been operating since 2001 and has been listed in the Prime Standard of Deutsche Börse since 2009. The company’s headquarters are located in Berlin. The company also operates branches in Düsseldorf, Hamburg, Vienna and Warsaw. Further information on the YOC Group and our products can be found at

The Role:

As a (Senior) JavaScript Developer (m/f/x) you will work closely with our several technical teams by developing innovative as well as distinguished mobile ad formats which are shown several hundred times each second on mobile devices across several countries. In this role you will contribute to diversified and international projects by working with our intercultural teams.

In particular, you will be in charge of:

  • Developing premium ad format products for mobile devices (web and in-app) and desktop browsers by using TypeScript, JavaScript, HTML5, CSS
  • Creating technical concepts and requirements for our high impact advertising products which are used by our own unique ad tech platform
  • Bringing your own ideas into the product development processes and enriching discussions with your technical know-how and creativity
  • Researching and evaluating new technologies and methods for developing novel products more efficiently
  • Working closely with our IT development teams to contribute with your technical know-how to state-of-the-art web and mobile applications

Your Profile:

  • You have completed an apprenticeship as an IT specialist, studied computer science or have gained similar appropriate working experience
  • You have at least two years of work experience in frontend development
  • You have expert knowledge in JavaScript (at least ES6) and are familiar with CSS
  • You have previously worked with automation testing (Unit tests, backend test, Acceptance tests and E2E tests)
  • Experience in Typescript would be a plus (the task will probably be in Typescript)
  • You ideally have experience in using the most relevant build tools (e.g. Docker, GitHub Actions, Google Cloud Build, or the like) as well as knowledge of Linux and web servers & modern frameworks and technologies such as React, node.js and APIs (e.g. REST, gRPC)
  • You are a team player with strong analytical and social skills, and have a high-quality approach to your work
  • You are fluent in English, additional knowledge of German is a plus.
  • You are looking for new challenges in a fast-paced environment and are not afraid to dive into concepts of the advertising industry

What we offer:

YOC stands for „Your Opinion Counts”. This idea guides us as a company and defines the understanding of our teams.

Inspire – Progress – Connected – these values are lived at YOC and determine our corporate culture. We offer you the opportunity to actively contribute to the shaping of your role, to give new impulses and to implement your ideas independently. It is our goal to support you in your personal and professional development, and together, and to create the future of Ad Tech.

In addition to an attractive and modern workplace with optimal transport connections and the option of Mobile Work, we offer in-house language courses, international company events, and without say, organic fruits & coffee.

Are you interested?

Send us your CV and become part of our open and dynamic team. Your contact, Belinda Topp, is looking forward to receiving your application.