UX & UI Design

Interfaces that speak, experiences that stick

The design department at Coexya

Since 2018, we have been offering our customers tailor-made, user-centred support to meet their specific needs.

Our approach is based on working closely with each client to understand their objectives, challenges and aspirations.

By combining technical expertise with an in-depth understanding of the user experience, Coexya delivers innovative, accessible and engaging graphic solutions.

L’image illustre la création d’interfaces digitales centrées sur l’utilisateur, avec des éléments graphiques et des mains manipulant des outils de design, symbolisant l’approche UX de Coexya pour concevoir des expériences inclusives et adaptées aux besoins métiers.

A method tailored to your business needs

As a UX design specialist, Coexya creates digital interfaces tailored to each business sector.
Thanks to our multi-sector experience, we quickly understand our customers' challenges and adjust our methods to create effective and relevant user experiences.

Our approach combines user needs and business objectives with appropriate methods (audit, personas, competitive intelligence, journey map, card sorting, interactive prototype, user tests, etc.) to analyse, communicate and improve each user journey.
Right from the design stage, accessibility guides our choices to guarantee inclusive experiences, designed for everyone.

Find out more

Our expertise tailored to your needs

Because good design is more than just beautiful,
combines strategy, emotion and performance.

We analyse user needs.  

We design intuitive, high-performance interfaces.               

We optimise each user journey for engagement and conversion.

UX Strategy

Understand your users, analyse user journeys and lay the foundations for a conversion- and performance-oriented UX strategy.

UX Design

Designing fluid, intuitive and accessible user experiences. Every interaction designed to serve your objectives.

UI Design / UX Writing

Combining aesthetics and ergonomics. Creating graphic interfaces that reflect your identity and attract attention.

Product Design

Thinking of the product as a whole. From vision to interface, a user-centred approach for effective and sustainable digital products.

Partnerships that last, lasting successes

Customer confidence is at the heart of our UX, design and digital innovation support.

 

Aquent Talent (2023)
Developers spend 50% of their time solving problems that could have been avoided through user-centred design.

Contact our experts to create a unique, high-performance experience

Contact us

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Watch the video and find out how to improve the experience of all your users




Video presenting the importance of accessibility from the UX UI phase of a web project
Find out how to improve the experience of ALL your users
Why is accessibility important?
15% of the world's population has some form of disability
Source World Health Organization - ‘World Report on Disability’
Why integrate it into your project
Improving the user experience for all users
Complying with legal obligations in terms of digital accessibility
Improving your brand image and your company's reputation
Improving the visibility and influence of your website or application
Integrating accessibility into the UX UI phase, phase means taking these parameters into account upstream
Typography, information hierarchy, understandable and legible text, contrast, use of ARIA (Accessible Rich Internet Applications) attributes, keyboard navigation, adaptability to assistive technologies (screen readers, etc.), use of alternatives. ), use of alternatives.
Our methodology: discover, define, design, prototype, test, deliver
Several types of disability:
- Auditory disability (deaf, hard of hearing, etc.)
- Cognitive disabilities (amnesia, fatigue, first use, etc.)
- Motor disability (broken arm, tremors, etc.)
- Visual disability (visually impaired, colour blindness, etc.)
A few examples:
- Visual disability (visually impaired, colour blindness, etc.) - solution: screen reader, adapted contrasts, etc.
- Motor disability (broken arm, tremors, etc.) - solution: keyboard navigation
- Hearing impairment (deaf, hard of hearing, etc.) - solution: subtitles and transcriptions
And there are so many other cases to take into account!
Want to find out more about accessibility? Download our white paper!


L’image montre deux livres blancs de Coexya sur l’accessibilité numérique, illustrant la prise en compte de l’accessibilité dès la conception UX/UI et durant le développement des projets web.

Download our white papers!

Discover our recommendations and best practices for ensuring optimum digital accessibility on your websites and digital applications and complying with legal obligations.

Consult our publications

FAQ: Mastering your UX/UI Design project

  • / How can UX Design reduce my technical development costs?

    It is estimated that developers spend nearly 50% of their time fixing issues that could have been avoided during the design phase. By investing in an UX audit and interactive prototypes early on, you validate user journeys before writing a single line of code. This reduces technical back-and-forth and accelerates the Time-to-Market for your digital tools.

  • / What are the legal requirements for digital accessibility?

    Accessibility is no longer optional; it is a legal requirement for many public and private organisations. Inclusive design ensures your services are usable by everyone, including people with disabilities. Integrating accessibility standards (such as WCAG) during the UI Design phase prevents costly redesigns and compliance risks, while improving overall usability for all users. Consult our guide on the subject.

  • / What is the difference between UX Strategy and Product Design?

    UX Strategy focuses on aligning user needs with your business goals (persona analysis, journey maps, conversion). Product Design is a more holistic approach that supports a product from its strategic vision through to its final interface and ongoing evolution. Both pillars are essential for transforming a simple interface into a powerful, sustainable tool.

  • / How can I improve the conversion rate of my business app or e-commerce site?

    Conversion depends on a seamless journey. Through user testing and ergonomic audits, you can identify the friction points blocking your customers or employees. An intuitive interface (UI) combined with clear UX Writing guides the user towards the desired action, thereby increasing engagement and productivity.

  • / Why use a local UX/UI agency (Paris, Lyon, Rennes, Lille, Brest, etc.)?

    Working with local experts facilitates co-design through physical workshops (card sorting, ideation workshops). Geographical proximity allows for a better understanding of your ecosystem and greater agility in project monitoring. Whether you are in Lyon, Paris, Rennes, or the surrounding areas, local support guarantees interfaces that truly speak to your local audience.