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We are a digital agency that believes in the power of design to solve complex problems and turn our clients projects into positive experiences.

The exchange and the continued construction of knowledge are the premises of all projects and experiences at Ylly. For this, we rely on a team of multidisciplinary experts.

Do you want to be part of it?

Quality made in France

We are an agency located in Paris and Lille. We are part of the Castelis Group, six companies with complementary expertise dedicated to the success of digital projects.


Working at Ylly means ...

Live in a good atmosphere

At Ylly, we know that having a good atmosphere influences the well-being, health and performance of our teams. There are many characteristics that we put in place to make work enjoyable: communication, respect, an appropriate climate and of course moments of relaxation as a team.

We always find good reasons to party and have a good time: board games, video games, karaoke, aperitifs, birthdays, lunches… all initiatives are welcome!


Go on team building for great adventures

Teamwork is essential for the success of our projects.

To improve the cohesion of our teams, each year we share unique moments between employees during our team buildings: training and sharing, games and entertainment, good restaurants and parties.

In recent years we have gone to Venice, Barcelona or even Faro. It is a unique moment to unite our teams around our values of participation, cooperation and team spirit.

Have a healthy workplace

In Paris or Lille, working hours are important, but breaks are sacred!

We have 2 beautiful and functional offices, lots of space to exchange ideas, meeting rooms for creative workshops, entertaining clients, etc. But we also have places dedicated to rest, free exchange, and video games. And the more athletic can enjoy a ping-pong or table football table.

We believe that having a comfortable and friendly place to take a step back fosters discussion, laughter and inspiration to find good solutions.

Think about your professional development

At YLLY, we attach great importance to offering you a career path that meets your expectations.

Each year, we make appointments with our employees in order to take stock of the year and set objectives for the year to come, desired developments and training wishes. This meeting also allows you to take the time to discuss successes and areas for improvement.


Our agency life