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Yann Fleureau

Yann Fleureau is a French engineer and entrepreneur who has built AI companies in cardiology, mathematics and cell biology. He co-founded Cardiologs in 2014, a Paris company whose cloud software reads electrocardiograms with deep learning, was named to MIT Technology Review's Innovators Under 35 Europe in 2018, and signed an agreement to sell the company to Philips in 2021. In late 2023, he helped found the non-profit Numina, whose NuminaMath 7B TIR model won the first AIMO Progress Prize in 2024, and XTX Markets gave the project a €3 million grant in December 2024. Since 2025, he is co-founder and CEO of Rivercell, a Paris company that raised a $25 million seed round in October 2026 to build an AI model of how human cells respond to drugs.

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Rivercell
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Timeline

  1. 2014

    Co-founding Cardiologs

    A French engineer, he co-founds Cardiologs in 2014, a medtech company headquartered in Paris whose cloud-based software uses deep learning to analyze electrocardiograms. He leads it as co-founder and CEO.

  2. 2018

    MIT Innovators Under 35 Europe

    MIT Technology Review names him one of its Innovators Under 35 Europe in 2018 for the cloud-based AI platform at Cardiologs that analyzes ECGs. He is also selected among the 35 laureates as BNP Paribas European Innovator of the Year.

  3. 2021

    Cardiologs joins Philips

    In November 2021, Royal Philips signs an agreement to acquire Cardiologs, a France-based company that applies AI and cloud technology to cardiac diagnostics. As co-founder and CEO, he says the company will keep its vendor neutrality and continue to work with third-party vendors.

  4. 2023

    Co-founding Numina

    In late 2023, with initial support from Mistral AI, he helps found Numina, an open AI-for-mathematics initiative, together with Jia Li, Guillaume Lample, Stan Polu and Hélène Evain. Numina is a non-profit organization built on open-source principles.

  5. 2024

    First AIMO Progress Prize

    Numina, the group he co-founded, wins the first AIMO Progress Prize in July 2024, and its NuminaMath 7B TIR model solves 29 of the 50 problems on the private test set. He says that gathering a dataset of more than 800,000 competition-level problems and solutions was a key success factor, and Numina releases it to the public.

  6. December 2024

    A €3 million XTX grant

    In December 2024, XTX Markets gives the non-profit Project Numina a €3 million grant to publicly release up to 1 million formal mathematical problems and proofs. As co-founder and President of Numina, he says the support will let Numina release datasets and AI models for mathematical reasoning.

  7. May 2025

    Talk on AI theorem proving

    In May 2025, he gives the talk "Project Numina and AI for Theorem Proving" at the workshop Mathematics for and by Large Language Models in Bures-sur-Yvette, France. He presents Numina's work, including KiminaProver, its formal math prover.

  8. Since 2025

    Founding Rivercell

    He starts Rivercell in 2025, a Paris company that builds an AI model of how human cells respond to drugs and genetic changes, and serves as its co-founder and CEO. In October 2026, Rivercell announces a $25 million seed round led by HV to fund its data platform, a larger Paris wet lab and its AI Virtual Cell program.

Career

  1. Since 2025RivercellCo-founder and CEO
  2. From 2023NuminaCo-founder and President
  3. From 2014CardiologsCo-founder and CEO

From the biography.

  1. Google had the most people shaping AI every year from 2014 to 2025Our estimates of which organizations employed the most people shaping AI each year from 1955 to 2025, tracing the shift from university labs to companies.
  2. The United States employs an estimated 48% of people shaping AIWe estimate where the people shaping AI work today, how universities, companies and research institutes split across countries, and how country shares have changed since the 1960s.
  3. 43% of living people shaping AI work outside their country of birthWe estimate that 43% of living people shaping AI work outside their country of birth (520 of 1,198 people with known birth and employment countries).
  4. More people shaping AI studied at Massachusetts Institute of Technology than at any other institutionWe estimate where the people shaping AI studied and where their careers led. Massachusetts Institute of Technology leads with 467 former students, including 291 recorded doctorates.

Colleagues

People named in this biography, and people with dated positions at the same organization in the same years.

Sources and credits

Photo: We have no published photo of Yann Fleureau yet. Send us a free-licensed photo.

  1. Yann Fleureau | Innovators Under 35 innovatorsunder35.com. Checked 20 October 2026.
  2. Philips to acquire Cardiologs - News | Philips philips.com. Checked 20 October 2026.
  3. Cardiologs Co-Founder & CEO Named to MIT Technology Review's Innovators Under 35 and BNP Paribas European Innovator of the Year prnewswire.com. Checked 20 October 2026.
  4. How NuminaMath Won the 1st AIMO Progress Prize huggingface.co. Checked 20 October 2026.
  5. Our Partnership with Project Numina generalcatalyst.com. Checked 20 October 2026.
  6. AIMO Progress Prize: July 2024 Results | AIMO Prize aimoprize.com. Checked 20 October 2026.
  7. Project Numina Receives €3M Research Grant From XTX Markets theaiinsider.tech. Checked 20 October 2026.
  8. Mathematics for and by Large Language Models -- 2025 Edition (22 mai 2025): Project Numina and AI for Theorem Proving indico.math.cnrs.fr. Checked 20 October 2026.
  9. Rivercell raises $25M to build an AI model of how cells respond to drugs thenextweb.com. Checked 20 October 2026.
  10. Rivercell Raises $25 Million Seed Round To Build AI Virtual Cell Platform pulse2.com. Checked 20 October 2026.