| # | Company | Employees |
|---|---|---|
| 1 |
CentraleSupéleccentralesupelec.fr
Provides higher education with 4,500 students across three campuses, 370 staff, 3 international schools, 5 associated labs, and partners with 176 universities and 140 companies. |
2,125 |
| 2 |
ENS Paris-Saclayens-paris-saclay.fr
Public institution providing high-level scientific and cultural education for research, teaching, and leadership roles in various sectors. |
847 |
| 3 |
Synchrotron SOLEILsynchrotron-soleil.fr
Third generation synchrotron providing advanced experimental facilities for material geometry and properties research, serving diverse scientific users worldwide. |
403 |
| 4 |
CAPAGO Internationalcapago.co
A company specialized in processing Schengen visa applications for the French and Italian Ministries of Foreign Affairs in various countries |
228 |
| 5 |
IUT d'Orsayiut-orsay.universite-paris-saclay.fr
Official page of the University Institute of Technology (IUT) in Orsay, part of the University of Paris-Saclay |
216 |
| 6 |
ORANO DS- DEMANTELEMENT ET SERVICES
A utilities company in France specializing in dismantling and services related to nuclear energy and waste management |
177 |
| 7 |
CNRS à Paris-Saclayiledefrance-gif.cnrs.fr
A leading public research institution in Paris-Saclay, conducting fundamental research with societal, industrial, environmental applications through the work of 3300 scientists |
165 |
| 8 |
Laboratoire des Sciences du Climat et de l'Environnementlsce.ipsl.fr
A leading research institute focusing on understanding natural and human-induced climate and environmental variations through national and international projects |
120 |
| 9 | 115 | |
| 10 |
Laboratory of Mechanics Paris-Saclaylmps.ens-paris-saclay.fr
Specializing in material and structural modeling, the company focuses on experimental mechanics, numerical simulation, and high-performance computing for research purposes |
79 |
| 11 |
Junior CentraleSupélecjuniorcs.fr
Junior CentraleSupélec is a student-run consulting firm offering services in digital, electronics, strategy, data analytics, and environment sectors with over 4500 future engineering graduates |
42 |
| 12 |
Spark Cleantechspark-cleantech.eu
Development of modular systems producing clean hydrogen on-site using unique non-thermal plasma technology converting biomethane efficiently. |
41 |
| 13 |
ISIisicrunch.com
Development of SaaS platforms enabling publishers to create accessible, enriched digital textbooks and e-learning modules for learners with disabilities. |
41 |
| 14 |
CENTRE BORELLIcentreborelli.ens-paris-saclay.fr
The Borelli Center brings together researchers in mathematics, computer science, and neuroscience focused on biomedical interfaces and industrial transfer |
37 |
| 15 | 34 | |
| 16 |
Raid CentraleSupélecraidcs.com
Organizing multi-day adventure races for 200 competitors in different regions, promoting student-business networking and environmental respect, certified ISO 9001 and ISO 14001 |
33 |
| 17 |
Lycée de la Vallée de Chevreuselyc-chevreuse-gif.ac-versailles.fr
A general and technological high school providing education and training for students in various academic and technical fields |
33 |
| 18 |
Automatants - Association d'IA de CentraleSupélecautomatants.cs-campus.fr
An association at CentraleSupélec school for AI enthusiasts, providing training, projects, and events focused on artificial intelligence technologies |
32 |
| 19 |
CS³ - Centre Spatial de CentraleSupélec pour les CubeSatsfacebook.com
A student space center focused on developing CubeSat platforms for educational and research purposes |
32 |
| 20 |
Association des Résidents de CentraleSupélecadr.cs-campus.fr
An organization at CentraleSupélec campus co-organizes social events, manages campus bar/cafeteria, organizes large parties, and addresses student issues in residence |
28 |
| 21 |
Fondation CentraleSupélecfondation-centralesupelec.fr
A public utility foundation supporting strategic projects and providing scholarships for students at a leading engineering school, promoting entrepreneurship and international visibility in research |
26 |
| 22 |
BDE CentraleSupélecbde.cs-campus.fr
Organizes student events, manages relations between students and school administration, supports diverse clubs, and facilitates professional networking opportunities. |
25 |
| 23 |
Cheer Up! CentraleSupéleccheerup.cs-campus.fr
The company works to improve the well-being of young cancer patients by visiting them in the hospital, organizing activities, and raising funds for research |
22 |
| 24 |
ISYBOTisybot.com
ISYBOT designs and manufactures collaborative robots to work alongside workers, improving productivity, reducing physical strain, and enhancing manual labor positions |
20 |
| 25 |
Innocordis-étude de cas DM 2024
A fictional medical device company specializing in cardiology, providing innovative solutions for heart-related issues |
19 |
| 26 |
BDB CentraleSupélec
The organization is dedicated to integrating new bachelor programs at CentraleSupélec, organizing events, fostering relationships with students, associations, and the school's administration, and facilitating connections with industry partners |
18 |
| 27 |
Strane Innovationstrane-innovation.com
Specializes in founding startups within sustainable development sectors by leveraging proven technologies and conducting multidisciplinary research for future growth. |
18 |
| 28 |
ViaRézoviarezo.fr
Providing high-speed internet, hosting, mailing lists, authentication, and social network services to 2000 CentraleSupélec campus students. |
18 |
| 29 |
SBCS - Sono Barco CentraleSupélecsbcs-events.fr
An established student association providing Sound, Lighting & Video services for events, specializing in technical organization for student parties in top Parisian schools |
18 |
| 30 |
Innowideinnowide.fr
Specialized in deeptech and hardtech, this company guides manufacturers from concept to validated prototypes, structuring and executing scientific projects with multidisciplinary teams. |
12 |
| 31 |
Maison des Sciences Sociales et des Humanités de Paris-Saclaymsh-paris-saclay.fr
The company is a research unit under CNRS, promoting interdisciplinary research in social sciences within the Paris-Saclay ecosystem |
12 |
| 32 | 9 | |
| 33 |
IPANEMA Labipanema.cnrs.fr
A joint laboratory specializing in advanced material characterization methodologies for archaeology, paleo-environments, paleontology, and cultural heritage, supporting synchrotron-based research |
7 |
| 34 |
Deeptopedeeptope.com
The company specializes in antibody characterization and optimization using high-throughput methods, particularly focusing on epitope/paratope mapping |
7 |
| 35 |
CentraleSupélec Venturecentralesupelec.vc
Initial seed investments ranging from 200,000 to 600,000 euros for deeptech, health, industrial, and environmental startups within the specific university alumni ecosystem. |
7 |
| 36 |
Nanosonics Europenanosonics.eu
Global innovator in infection prevention with automated high level disinfection devices for ultrasound probes, reducing cross contamination and protecting staff |
6 |
| 37 |
Fédération des Associations de CentraleSupélec - FACS
A non-profit organization supporting the association life at CentraleSupélec through organizing events and providing moral and financial assistance |
5 |
| 38 |
cleverlearncleverlearn.fr
Cleverlearn develops intelligent tools to assess learners' skills and personalize training Our modular AI adapts to curriculum and offers unique learning paths |
4 |
| 39 |
MEDUZEmeduze-cloud.com
Méduze offers a long-term electrical monitoring solution for industrial machines to optimize energy consumption |
2 |
| 40 |
MAZELIEU CONSEILmazelieu.com
The company helps entrepreneurs, leaders, and managers improve their leadership skills, team engagement, strategic vision, and time management for impactful results |
2 |
| 41 |
BeeGamesbeegames.fr
Organizing basketball tournaments bringing together students, professionals, and companies to foster informal networking opportunities in a sports setting |
2 |
| 42 |
Campus des métiers et des qualifications Energie Durable
The company is dedicated to anticipating and meeting the training needs in the energy sector for a successful energy transition |
1 |
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
The same list elsewhere in France
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