Jean-Charles Martinez

CEO @mad

📍 France🔄 Updated September 2026💼 11 investments📅 3 years investing🗓 Last invested Jan 2026
VC🌍 FranceInvested this year
11
Total investments
1
Early stage
5
Mid stage
4
Late stage
3y
Years active

Portfolio

11 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Seed Investor
Jan 2026
One Biosciences leverages the power of single-cell analysis to unlock a new wave of targets and precision medicines for a broad range of difficult-to-treat conditions. One Biosciences is an integrated discovery engine combining a multi-disciplinary team with in-house computational capabilities. One Biosciences is backed by Institut Curie and Home Biosciences.
Seed Investor
2025
U-Space designs and builds constellation-ready small satellites. Our company offers both a 16U and a microsatellite (the FreeForm) to address the civil, commercial and defense markets. We help our customers from their mission design to the operation of their constellation in our own control center. Through our offers and our dedication, we aim to facilitate access to space for those wishing to improve the human condition and contribute to the further exploration of the unknown.
Investor
Jan 2024
Latitude is a pioneering French rocket launch company on a mission to push the boundaries of space technologies, fostering a better and brighter future for all. With our 20m height Zephyr launcher, we strive to create innovative and sustainable solutions for space exploration and development, while placing human experiences at the core of our journey. Our team is driven by the values of optimism, innovation, collaboration, perseverance, and boldness. At Latitude, we believe in the power space exploration and the limitless possibilities it offers. Were not just launching rockets; were launching dreams and building the foundation for a more resilient and inspired world. As we embark on this cosmic adventure, our warm and authentic approach brings a sense of belonging and togetherness, making space more accessible and inviting for you. Our motto, "Bienvenue in your space," reflects our commitment to creating a more inclusive and diverse space community. Join us at Latitude and be part of our dynamic, collaborative team that is redefining the future of space exploration. Lets shape the cosmos together, one launch at a time. Explore career opportunities at latitude.eu/jobs and be part of our cosmic journey.
Seed Investor
2024
Ziwig Biotech is a biotechnology company pioneering the analysis of salivary RNA and the application of artificial intelligence to biomolecular biology. At the crossroads of medicine, data science, and digital technology, Ziwig develops non-invasive tests and therapeutic biomarkers designed to transform the diagnosis and management of chronic diseases—particularly those affecting women. Its flagship innovation, Endotest®, is the first non-invasive and highly reliable saliva-based test for the diagnosis of endometriosis. This breakthrough innovation, multiple award-winner (Galien Prize, Tech For Future Award), exemplifies Ziwig’s ability to revolutionize women’s health through the convergence of biotechnology, artificial intelligence, and precision medicine. Ziwig operates at the heart of a rapidly evolving global health ecosystem, where universal access to diagnosis and prevention is a major challenge for equity and sustainability. Through its scientific and societal commitment, Ziwig contributes to building a more human, accessible, and universal precision medicine—serving patients, healthcare professionals, and the health systems of the future. 🌐 www.ziwig.com
Seed Investor
2024
Order fast 7/7 for express delivery in Paris region and D+1 everywhere else in France. Incredible choice of products. Ultimate delivery experience. www.labellevie.com Promo code : paullbv (5 euros offered, first order only) Test it. Love it. #foodtech #retailtech #darkgrocery
late stageRetail
Seed Investor
2024
Biomemory is a deep-tech company specialized in enterprise data storage. It leverages molecular engineering to build cost-effective and energy-efficient exabyte rackable appliances for Data Centers. Biomemory also develops high-quality DNA-based anti-counterfeiting systems with minimal ecological impact. Contact us: contact@biomemory.com Jobs and internships: jobs@biomemory.com
mid stageBiotechnology
Seed Investor
2024
Aujourd’hui, 25% de lempreinte carbone mondiale provient des échanges internationaux : ils génèrent énormément d’émissions pour trop peu d’actions mises en place. Keewe, c’est la fintech pour des échanges internationaux plus simples et plus durables. On pense que l’action écologique ne doit pas être un coût à subir mais un avantage compétitif pour embarquer les entreprises. On agit sur - l’impact : on mesure l’empreinte carbone des opérations tout en générant de l’impact positif - le prix : on est ultra compétitifs et transparents par rapport au marché bancaire et aux autres fintech - la simplicité : c’est facile, intuitif. Tous les services financiers internationaux sont au même endroit. Pour convaincre, on doit simplifier. L’impact ne doit pas être une charge supplémentaire. Les entreprises n’ont rien à faire: on est là pour accompagner. ____________________________________________________________________________ Lauréat de Scale up Excellence de la French Tech Prix coup de ❤ du Challenge Fintech for Tomorrow 2019 Labellisé Envol! : https://www.envol-entreprise.fr/ Et accéléré par WILCO (https://www.wilco-startup.com/) www.keewe.eu
Investor
2023
SPAYR développe des solutions Paie & RH conçues pour résoudre des problèmes opérationnels concrets. Notre objectif : vous faire gagner du temps, sécuriser votre trésorerie et simplifier la vie de vos équipes. Notre suite s’articule autour de trois briques principales : 👉 Gestion et recouvrement automatisé des IJSS Un portail connecté aux outils de paie qui automatise le suivi et le recouvrement des IJSS, afin de réduire vos pertes et améliorer votre cash-flow. 👉 Acompte sur salaire à la demande Une application qui permet aux salariés de demander un acompte en deux clics, 24/7, avec versement instantané — afin de gagner en autonomie et lutter contre le découvert bancaire et frais dagios 👉 Pouvoir dachat Un module qui génère jusquà +1 000€ de pouvoir dachat supplémentaire par salarié via des parcours daccompagnement budgétaires et sociaux SPAYR s’intègre aux environnements existants grâce à ses connecteurs avec +50 logiciels SIRH et paie. Déploiement simple, sans paperasse, sans remise à plat de l’existant. Aujourd’hui, +120 ETI et Enterprise comme La Banque Postale, Groupe Dalkia ou encore Mondial Relay utilisent SPAYR au quotidien.
Investor
2023
💶 Investissez aux côtés d’Anthony Bourbon 📈 Dans les startups de demain 💥 À partir de 1 000€ par projet. Rejoignez le club ! 👇 Des entrepreneurs à succès experts de leur verticales investissent également à vos côtés, aux mêmes conditions et au même moment. Thomas Rebaud (Meero, Licorne), Thomas Battistini (Jour, vendu 100M€), Rand Hindi (Zama), Louis Marty (Merci Handy...). Ils accompagnent en plus les fondateurs en les soutenant tout au long de laventure en ayant une place au board. Vous devenez actionnaire en quelques clics. Léquipe Blast Club soccupe de tout et lintégralité du process est digital, 100% en ligne. Anthony Bourbon investit dans TOUS les deals présentés, mais VOUS décidez ceux où vous souhaitez participer. Blast vous permet également de vous former et de rejoindre le club le plus puissant de France. Plus de 10 000 membres dans toute la France. En plus de profiter de ce réseau (annuaire, discord etc), participez à tous les événements physiques (afterwork, conférences...), les pitch live de toutes les startups, les "rencontres Blast" mensuelles avec des invités prestigieux et échangez quotidiennement sur notre forum déchange privé avec Anthony, les experts et les milliers de membres. Vous pourrez bien entendu suivre les performances de tous vos investissements et recevrez chaque trimestre un reporting précis de vos startups. Les membres peuvent également échanger avec les fondateurs sur le canal discord privé réservés aux actionnaires de chaque dossier. Rappel : Investir comporte des risques. Ninvestissez que largent donc vous navez pas besoin à court terme.
Investor
2023
Since 1999, a lot of international studies have proven the benefits of physical activities and teambuilding events on companies’ competitivity and profitability. Squadeasy is an “all-in-one” mobile and web platform that allows firms to place at their employees disposal a ludic and connected running competition by teams. Every employee can participate, whether they are spread all around the world, sportsmen/women or not, as far as they have a personal or professional smartphone. Squadeasy slogan is :“ the company’s health is driven by the one of its’ employees. Squadeasy is directly inspired from SquadRunner’s success, a B2C running application that is used over 83 countries. Indeed, SquadRunner is known as the first international running competition that has been able to imply gamification and team spirit. Squadeasy has adapted the concept to companies’ needs and involvement in their CSR’s (Corporate Social Responsibility) strategy. It is a mobile application on iPhone or Android, as a white label, that offers a unique experience to each collaborator. Squadeasy technological tools are impressive : - instant messaging between participants, but also between organizers and participants. - Internal GPS tracker : real-time speed, distance, map, and graphics. - Connection to other trackers (applications and connected watches) Squadeasy and SquadRunner’s mechanisms are directly inspired from scientific theories on motivation and more precisely accomplishments of aims. Squadeasy and SquadRunner are services offered by LiveHappier, a Paris based company created by a ten years experienced team in various areas such as R&D, finance, art, sport, IT development and car industry.
Investor
2023
Wheere is a French deeptech company revolutionizing indoor geolocation. Our technology is the only one capable of covering a site of one square kilometer with just four transmitters. By leveraging unmodulated low-frequency waves and a unique algorithm, our solution penetrates even the densest obstacles, such as concrete walls, and offers a sub-meter accuracy. Founded in 2021 by Pierre-Arnaud Coquelin and Antoine Carrabin, Wheere successfully closed an €11 million seed round in July 2023. At Wheere, our mission is to make indoor geolocation as accessible as GPS—ubiquitous, affordable, and integrated into all B2C and B2B devices. To achieve this, we have two key milestones ahead: - By 2027: Reduce the size, energy consumption, and production costs of our receivers. - By 2030: Achieve global availability of our technology through the spatial deployment of our #LEOPNT transmitters.
Experience · 13 entries
All (13)
Investments (11)
Founder (1)
2026
Seed Investor
Jan 2026
One Biosciences leverages the power of single-cell analysis to unlock a new wave of targets and precision medicines for a broad range of difficult-to-treat conditions. One Biosciences is an integrated discovery engine combining a multi-disciplinary team with in-house computational capabilities. One Biosciences is backed by Institut Curie and Home Biosciences.
2025
Seed Investor
2025
U-Space designs and builds constellation-ready small satellites. Our company offers both a 16U and a microsatellite (the FreeForm) to address the civil, commercial and defense markets. We help our customers from their mission design to the operation of their constellation in our own control center. Through our offers and our dedication, we aim to facilitate access to space for those wishing to improve the human condition and contribute to the further exploration of the unknown.
2024
Investor
Jan 2024
Latitude is a pioneering French rocket launch company on a mission to push the boundaries of space technologies, fostering a better and brighter future for all. With our 20m height Zephyr launcher, we strive to create innovative and sustainable solutions for space exploration and development, while placing human experiences at the core of our journey. Our team is driven by the values of optimism, innovation, collaboration, perseverance, and boldness. At Latitude, we believe in the power space exploration and the limitless possibilities it offers. Were not just launching rockets; were launching dreams and building the foundation for a more resilient and inspired world. As we embark on this cosmic adventure, our warm and authentic approach brings a sense of belonging and togetherness, making space more accessible and inviting for you. Our motto, "Bienvenue in your space," reflects our commitment to creating a more inclusive and diverse space community. Join us at Latitude and be part of our dynamic, collaborative team that is redefining the future of space exploration. Lets shape the cosmos together, one launch at a time. Explore career opportunities at latitude.eu/jobs and be part of our cosmic journey.
Seed Investor
2024
Ziwig Biotech is a biotechnology company pioneering the analysis of salivary RNA and the application of artificial intelligence to biomolecular biology. At the crossroads of medicine, data science, and digital technology, Ziwig develops non-invasive tests and therapeutic biomarkers designed to transform the diagnosis and management of chronic diseases—particularly those affecting women. Its flagship innovation, Endotest®, is the first non-invasive and highly reliable saliva-based test for the diagnosis of endometriosis. This breakthrough innovation, multiple award-winner (Galien Prize, Tech For Future Award), exemplifies Ziwig’s ability to revolutionize women’s health through the convergence of biotechnology, artificial intelligence, and precision medicine. Ziwig operates at the heart of a rapidly evolving global health ecosystem, where universal access to diagnosis and prevention is a major challenge for equity and sustainability. Through its scientific and societal commitment, Ziwig contributes to building a more human, accessible, and universal precision medicine—serving patients, healthcare professionals, and the health systems of the future. 🌐 www.ziwig.com
Seed Investor
2024
Order fast 7/7 for express delivery in Paris region and D+1 everywhere else in France. Incredible choice of products. Ultimate delivery experience. www.labellevie.com Promo code : paullbv (5 euros offered, first order only) Test it. Love it. #foodtech #retailtech #darkgrocery
late stageRetail
Show all 13 entries ↓
Investment activity
2023–2026 · 11 investments
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