I design products and the design systems that let them scale.

Senior Product Designer, 13 years in product design. I design e-commerce sites, apps and internal tools, and the design systems that carry them across brands, from token architecture to adoption.

Recent work: L'Oréal Group, where one design system runs the sites of 30 brands and is becoming AI-native through MCP. Bouygues Telecom, three brands on one system. Renault Digital, a data-heavy tool for engineers.

Email me contact@romainallain.fr, I usually reply within two working days.

• 13 years
  From the first mobile apps to AI-native design systems

  Decisions made with hindsight, and processes that hold when technology shifts.

• 5 industries
  Luxury, telecom, automotive, media, health

  Practices carried from one sector to the next, such as conversion from e-commerce.

• B2C + B2B
  Consumer journeys and expert tools

  The right level of complexity, from a checkout to a data-heavy screen.

• Global
  Worldwide rollouts, fluent English

  Solutions that scale globally and respect local constraints.

• 3 design systems
  Built from scratch, two of them multi-brand

  One change ships to every brand at once: €1.5M saved at L'Oréal.

• End to end
  From business case to adoption

  One owner across strategy, build and rollout, so fewer handoffs.

• AI
  Design systems and AI tooling

  MCP, Claude Code, Cursor: design-to-code workflows that give teams time back.

• IC + Lead
  Principal IC, with lead experience

  Hands on in the files, with the strategic view and sharing culture that come from leading 6 designers.