We are a digital agency specializing in digital transformation, with expertise in Web & Mobile development, UX/UI design, and digital marketing (SEA, SEO, Analytics).
We work with businesses of all sizes, from large corporations to startups, to boost their growth and maximize the impact of their digital initiatives.
Based in Paris and Lille, we bring our expertise to your digital strategy to enhance performance and drive business growth.
Our three key areas of expertise
UX/UI Design
Specialists in UX/UI, we design user journeys that captivate and meet your users’ expectations. Our teams optimize your interfaces to turn them into performance drivers.
Open-source Development
By using open-source technologies, we create solutions tailored to the needs of each project, ensuring a high-performing online presence and increased efficiency for your business.
Digital Marketing (SEO / SEA / Analytics)
With a performance-oriented strategy, we maximize the effectiveness of your digital campaigns (SEO, SEA, Analytics) to stimulate the growth of your business.
In addition we are committed
We are committed to good causes, our wish being to share our skills and expertise with players who are working to improve our future.
Our agency, with its 15 years of history, provides solutions to clients of different sizes throughout France and internationally.
Our agency was founded by Eric with the aim of offering support from passionate experts, close to you and your needs, with the dual objective of performance and human relations based on trust, the two pillars of our activity.
Since 2020 we have been part of the Castelis business group: 6 companies each with their own specificities in the digital world.
We develop tailor-made projects adapted to the needs of your target audience: business platforms, websites, and mobile applications. Using proven methodologies and secure technologies, we provide solutions that are perfectly tailored to your expectations.
Whether it’s for a product, service, or website, our mission is to build efficient platforms that meet both your users’ expectations and your company’s needs.
A team of thinkers and innovators determined to reinvent the way we think about digital, who love to use technology and design to create meaningful experiences.
We have runners, cyclists, yogis, photographers, travelers, illustrators, musicians, gamers ... we have Brazilians, Argentines, Italians, Parisians, Lille ...
We believe that the sum of this diversity allows for a deeper exploration of innovative, sensitive and creative solutions.
For this reason, we promote an environment that facilitates the sharing of different experiences and worldviews.
And it is at the Ylly agency that this diversity of talents and passions meet, to create value for your projects.
The Ylly agency is made up of developers, artistic directors, graphic designers, web designers, SEOs, performance managers, web integrators, project managers, community manager ...
Our team, specialized in these different trades, is there to succeed with you, your digital projects.
Performance manager
Project manager
Interface designer
Technical director
