UX/UI Design

User-Centered Design: Think Like Your Customers

At Cosa, every UX/UI redesign is based on a strong belief: your website is primarily for your users. After an in-depth discovery phase where we immerse ourselves in your challenges, we identify pain points and opportunities to transform the digital experience into a true performance driver. The goal is to offer seamless navigation, simplified journeys, and interfaces designed to engage.

A Design That Converts As Much As It Delights

Beauty is not enough: good design is first and foremost design that works. We combine aesthetics with performance. Every interface element, every color, every micro-interaction is crafted to guide, reassure, and convert. This is the success behind our projects for L’Humanité, TF1 Info, Fauchon, and Léa Nature. Our obsession: creating digital experiences that combine elegance, intuitiveness, and measurable effectiveness.

A Design + Tech Approach Focused on Modularity

From the start, we think “design system”, scalability, and technical performance. We work closely with your marketing, product, and tech teams to create robust and easily deployable experiences, regardless of the device, CMS, or tech stack.