Guillaume CAILLET

With experience working in agencies and large groups, I'm thrilled to offer my expertise to help you build and enhance your product or service. There is no better way to meet your users' needs, keep them happy with your product and make money. We will work together to develop a comprehensive strategy and design experiences that will meet the needs of your end-users and your in-house staff. Product & System Design - Discovery - Alignment with business needs - Prototype design - Structuring and framing the Design System And finally, the implementation of Design Tokens! UX design This will involve identifying how and when they are used, as well as understanding their behaviour. The synthesis of the data collected (Personas, User Journey, CJM, Service Blueprint, etc.) is going to be really interesting! The design of user paths (user stories, use cases) is also a key part of the project. - Design of wireframes - Creation of mock-ups (Figma) If you have any questions about our services or if you would like to discuss future projects, please do not hesitate to contact me.

Senior Product Designer I help other designers with different levels of expertise structure their design systems, set up research ops, and bring clarity to their process. Want to grow your practice and make design a real product lever? Let’s talk !

• Design System workshop with M1 UX: building a foundation & understanding the need for a design system (2026) • Jury M2 UX: end-of-study projects (2026) • Eco-design & Design System, Speaker (2023, 2024, 2025) • Design System, Annual project, 100% students graduated (2022-2023) • User Research Methods, Lecturer (2021-2022)

Skills: Conception axée sur l’utilisateur · Product design · Design System

+74% active users (430 → 747) and key features now running on customers' production lines. Oplit builds production planning software for industrial manufacturers in aerospace, luxury and automotive. I own design on the product: continuous discovery with customers and prospects, strategic features shipped with product and engineering, and the design system I built from scratch, structured for AI-assisted workflows, which made design execution 30 to 50% faster.

I am the UX manager at Beapp and I work in collaboration with the UI designer mainly. I'm also in contact with all the people involved in the different client projects (PO, Business, Tech). I have the opportunity to design experiences for different types of clients in the health, automotive, food, institutional sectors etc. I am in charge of creativity workshops, immersion, co-creation. I am also in charge of research and user testing. The realization of functional paths, wireframes and userflows allow clients to know more about their products/services and to make the design phase more concrete. I also assist our clients on strategic reflections and on their product/service orientations.

I am a UX Designer in the 574 section (innovation) at the SNCF in Nantes for a 6 months internship. I'm in charge of designing personas, user paths and screen ergonomics on different applications.

Apprentice for 2 years and trained as a web designer with a specialization in UX design, I worked as a UX designer on many projects allowing me to build a solid experience in this field that I am passionate about.