Yohann Kouma — Product Designer

Regulation, flow, and calculation impose their complexity.

Designing a product means choosing who carries it: the system, or the human.

  • Currently design @ Doctolib
  • Based in Blois, Centre-Val de Loire

Work

Case study 1 of 5

Rigor
Continuity
Discernment
Ground truth

Rigor means documenting failures and trusting the data: an untested assumption always ends up corrupting the business logic. That’s the prerequisite for continuity — a resilient product handles edge cases by default and protects the critical path, even as the system degrades. That robustness doesn’t get decreed in a PRD or in Figma — it demands discernment grounded in the field: when user research or analytics contradict the spec, usage wins, even if it means scrapping the iteration in progress. The goal was never to design happy paths. Every workaround a user invents is proof the product failed to absorb the cognitive load in their place.

About

Eleven years of product design in ecosystems where a mistake is expensive: insurtech, fintech, and health tech. Starting as a consultant on pricing and underwriting flows, my scope has steadily narrowed toward owning complex domains in-house — asset management, billing, regulatory compliance. The thread running through it is constant: absorbing business-rule complexity so the interface doesn’t have to. My territory is the invisible layer of the product, where financial flows meet the legal framework. The goal was never interface polish — it’s architectural robustness: structuring the system so it carries the weight of complexity instead of the user.

  1. Doctolib

    Product designer

    since Oct. 2021, full remote from Blois

    Product designer on the billing, third-party payment, and regulatory-compliance surface — the zone where a wrong call costs the practitioner money.

  2. Amundi

    UX/UI designer

    Sept. 2019 – Aug. 2021, Paris

    Covered the full product cycle of the Amundi Suite platform, paired with the product owner. Wrote the interface guide the engineering team built from — a design system in everything but name.

  3. Axance

    UX/UI Consultant

    June 2018 – Sept. 2019, Paris

    Four regulated sectors in sixteen months: a savings-account subscription flow for a retail bank, contract generation and an admin console for a protection-insurance group, a member portal for a health insurer.

  4. Gras Savoye/WTW

    UX/UI Consultant

    Oct. 2015 – May 2018, Puteaux

    Insurance brokerage and employee-benefits consulting. Designed the flows for a corporate auto-insurance pricing tool.