Senior Frontend Developer

Leuven, Belgium


Job Description

THEOplayer is looking for an experienced front end developer to help us meet our ambitious growth objectives in the online video industry.We build an award-winning HTML5 video player which delivers a world-class viewer experience without the need for plugins.

The role reports to the Development Manager.

As a front end developer, it will be your responsibility to build and improve the customer experience when managing and deploying THEOplayer. You will analyse requirements, design interfaces, influence architecture and develop features that make the usage of THEOplayer video playback solutions and platform easier for our customers.

For these tasks, you will be in direct contact with the product team and collect feedback from customers.

In order to turn this in a success story, it is important to be experienced in the design of user flows and have decent insights in user experience. In order to further develop a flexible and stable THEOplayer video player and platform a good understanding of solid software architecture and excellent programming skills are needed .

The online video market is a market growing at lightning speed. THEOplayer plays a pivotal role in the evolving video landscape and is a recognized market leader in the HTML5 player domain. In 2016 THEOplayer won the Streaming Media Reader's Choice Award in the Video Player category, confirming its game changing role.

One of the reasons we are able to achieve this is our highly effective and appreciated research and development team. In order to maintain this leading role and rise to further heights, we are looking for highly motivated members to join our team.

We value proven experience, prior success, intelligence and work ethic.

Thank you for taking the time to read the Desired Skills & Experience section in detail.

We take these criteria into account to assess candidates.

We will only get back to you if there is a relevant match between you and THEOplayer.


Leuven, Belgium (Europe)

Duties & Responsabilities 

  • Be part of a highly innovative R&D team.
  • Improve architecture and functionality of THEOplayer video playback solutions and the THEOplayer platform.
  • Work on the customer facing software platform where customers can manage and customize player configurations.
  • Identify where user experience can be improved and handle these requirements accordingly.
  • Optimize usability flows.
  • Be proactive at maintaining and improving the code base and functionality.
  • Make clever use of technology.
  • Contribute to improving our development processes and environments.
  • Bring your experience and ideas to advance our company's vision for the future.

Desired Skills & Experience

  • To be a passionate and genius coder.
  • Have excellent knowledge and +5 years of experience using JavaScript, HTML, CSS and NodeJS.
  • Experience in the design of user flows and have decent insights in user experience.
  • Knowledge of good software architecture.
  • Healthy brains with technical insights.
  • Strong analytical, critical thinking and problem solving skills.
  • A outstanding portfolio of software developed in the past.
  • Ability to work individually as well as in team.
  • Understand the dynamics of an international fast-growing scale-up.
  • Tons of energy, passion, humor and enthusiasm.
  • Strong communication and interpersonal skills: courteous, well spoken and polished.
  • Excellent written and verbal communication skills in English.
  • Knowing the online video industry is a plus.

Interested to take the challenge?

Send your cover letter and CV to or apply through LinkedIn.

An application where you explain and motivate how and why you will make a difference is much appreciated. We will only get back to you if there is a relevant match between you and THEOplayer.

Not a Senior Frontend Developer, but open for a career at THEOplayer? We also have the following openings: