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About me

Photo of Mehdi MonteyremardPhoto of Mehdi Monteyremard

Passionate about user experience and human-centered design. Senior Product Designer at Worldline, I design intuitive, accessible (RGAA) and scalable digital solutions, in close collaboration with product and tech.

Product designer

What does it involve?

Product design connects a business goal, users, and technical constraints. My job: design a digital product that is clear, useful, and measurable, validating choices before committing too much development.

  • Explore

    Competitive analysis, benchmarks, user research and interviews: I map the market and the field before proposing a solution.

  • Frame the problem

    Business goals, constraints, then journey wireframes. The team aligns on flows before increasing fidelity.

  • Prototype fast

    Mockups and clickable prototypes to make ideas concrete. You see the product and its risks before investing in development.

  • Test hypotheses

    User tests, A/B testing: we confront ideas with reality and keep what actually works, before scaling.

  • Measure impact

    Conversion, engagement, friction points: metrics help prioritize what moves the business, rather than what merely looks finished.

  • Industrialize

    Design system, accessibility, product/tech collaboration: I build so the product stays consistent and scalable over time.

Skills

Tools, UX, UI, project management and soft skills.

FigmaConfluenceJiraCursor

Experience

At Worldline, that’s my day-to-day work on digital products. As a freelancer, I take on more focused briefs: landing pages, websites, graphic design, CVs, UI kits, not full product projects.

Senior Product Designer
Worldline | Financial Services
Oct. 2024 – Present

Lyon

Product design on Financial Services digital products: explore, frame, prototype, test, measure and industrialize.

  • Trusted Interactions redesign (1M messages/day): audit, discovery, ideation workshops, wireframes and PM/PO/Delivery collab
  • Advanced prototyping, high-fidelity mockups, dashboards and mobile apps
  • User testing and journey iterations
  • Building a UI Kit and managing a Design System
  • Overseeing design integration in production and Open Banking demos (Figma)
Independent Product & Web Designer
Freelance
May 2019 – Present

Romans-sur-Isère

Focused digital design and creation briefs, not full product projects.

  • Landing pages and websites
  • Graphic design and CVs
  • UI kits
  • Brand guidelines and digital assets