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Mathieu GrimbertMG

Mathieu Grimbert

Supermalter

AI PRODUCT MANAGER

€800/day
2 projects
Barcelone, ES
8-15 years

Average response time: 1 hour

About Mathieu

Senior PM with 8 years navigating high-stakes, high-complexity product environments: from owning critical auth infrastructure at Delivery
Hero (45M users, 20 markets) to shipping France's first regulatory digital tool before its decree was adopted. Recruited for first PM
roles at Series A startups, I scale product orgs, ship with measurable outcomes and build with LLMs daily.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Conversational

Can work on-site
Barcelone (up to 10km)

Experience

  • beta.gouv.fr • · Public
    Freelance Product Manager
    PUBLIC SECTOR
    June 2024 - Today (2 years and 1 month)
    Paris, France
    – Shipped le Guichet Unique de la Haie, a digital tool implementing a French regulatory decree before it was even adopted, a first in French public policy: led a fully remote cross-functional team (2 designers, 3 senior devs, 1 deployment lead); aligned Ministry of Agriculture, Ministry of Environment, and local DDTs on a politically sensitive subject; turned 13 complex regulations and their cartographic layers into a clear UX for non-digital users.
    Choose
    UX/UI Stakeholder Management
  • appChoose
    Freelance Product Manager
    E-COMMERCE
    June 2024 - January 2025 (7 months)
    Paris, France
    – Took ownership of a cross-functional deadlock between support, ops, delivery providers and warehouse teams: redesigned the returns and delivery experience end-to-end, saved €240k/year in under 6 months, with no deterioration in customer experience tracked via a Metabase dashboard I built myself.
  • Mediflash • · Healthtech
    Product Lead
    MEDICAL
    May 2023 - May 2024 (1 year)
    Paris, France
    – Led a cross-functional team of 2 PMs, 1 designer and 8 devs to replace manual Airtable staffing with an automated matching system: a native app for caregivers and a desktop platform for health facilities, reducing average mission staffing time from 2 hours to 4 minutes.
    – Built an experimentation culture from scratch: introduced Retool as a no-code prototyping layer and personally ran in-person usability sessions in care facilities to validate flows with end users before committing to engineering.
    – Moved the company from ad-hoc ChatGPT usage to a coordinated AI strategy: deployed Dust across all teams, structured 20+ use cases and delivered measurable productivity gains within months.

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Education

  • Ingénieur
    CentraleSupélec
    2019

Skill set

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