# The 30 largest education providers in the Essonne department

Tamtam tracks 30 education providers headquartered in the Essonne department. This list ranks all of them by number of employees on LinkedIn, led by École Polytechnique, CentraleSupélec and CENTRE HOSPITALIER SUD FRANCILIEN. Their median headcount is 41. Half of them were founded in 2012 or later. The most common headquarters are Palaiseau (8), Gif-sur-Yvette (4) and Orsay (4).

The Essonne department hosts a significant concentration of higher education and research institutions, alongside key healthcare providers. Notable examples include École Polytechnique, a leading French institution for science and technology research and education, and CentraleSupélec, which provides higher education across three campuses. Télécom Paris focuses on ICT programs, while ENSTA is a public institution for higher education, research, and innovation. Paris-Sud University (Paris XI) is a research university, and Institut Mines-Télécom (IMT) is a group of engineering and management graduate schools. The department also features major healthcare facilities like CENTRE HOSPITALIER SUD FRANCILIEN and Groupe hospitalier Nord-Essonne.

Most of the listed companies are well-established institutions, with several founded in the 18th and 19th centuries, indicating a long-standing commitment to education and healthcare in the region. There is a strong cluster of headquarters in Palaiseau and Orsay, highlighting these areas as central hubs for academic and medical activities. While higher education and healthcare dominate, there are also specialized firms such as SITECH France, providing digital solutions for construction, and DAF CONSEIL, which specializes in automotive technical training.

🇫🇷 Essonne · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [École Polytechnique](https://www.tamtam.ai/c/ecole-polytechnique) (polytechnique.edu)<br>Leading French institution offering top-level research, academic programs, and innovation in science and technology with a strong emphasis on excellence and humanist traditions | Research Services | 🇫🇷 Palaiseau | 4,377 | 1794 |
| 2 | [CentraleSupélec](https://www.tamtam.ai/c/centralesupelec) (centralesupelec.fr)<br>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. | Higher Education | 🇫🇷 Gif-sur-Yvette | 2,125 | 1829 |
| 3 | [CENTRE HOSPITALIER SUD FRANCILIEN](https://www.tamtam.ai/c/centre-hospitalier-sud-francilien) (chsf.fr)<br>Public healthcare institution serving one million people in southern Île-de-France, providing medical services and hospital care to the community. | Hospitals and Health Care | 🇫🇷 Corbeil-Essonnes | 1,219 |  |
| 4 | [Télécom Paris](https://www.tamtam.ai/c/telecom-paris) (telecom-paris.fr)<br>A leading educational institution in ICT, offering various programs in engineering, masters, and PhD, with a focus on innovation and entrepreneurship in the digital world | Higher Education | 🇫🇷 Palaiseau | 953 | 1878 |
| 5 | [ENSTA](https://www.tamtam.ai/c/ensta) (ensta.fr)<br>Leading public institution for higher education, research, and innovation. Offers engineering cycles, master's, doctorates, and specialized master's degrees for scientific and technical excellence. | Higher Education | 🇫🇷 Palaiseau | 916 | 1741 |
| 6 | [Paris-Sud University (Paris XI)](https://www.tamtam.ai/c/paris-sud-university-paris-xi) (universite-paris-saclay.fr)<br>A prestigious research university focused on understanding the world, student success, and meeting society's needs with top student integration into the workforce | Higher Education | 🇫🇷 Orsay | 910 | 1970 |
| 7 | [Institut Mines-Télécom (IMT)](https://www.tamtam.ai/c/institut-mines-telecom-imt) (imt.fr)<br>Leading public group of engineering and management graduate schools, higher education and research institution, with eight public and two affiliate schools. | Higher Education | 🇫🇷 Palaiseau | 474 | 2012 |
| 8 | [Groupe hospitalier Nord-Essonne](https://www.tamtam.ai/c/groupe-hospitalier-nord-essonne) (gh-nord-essonne.fr)<br>Regional hospital network providing comprehensive medical services including emergency, maternity, pediatrics, surgery, psychiatry, and critical care with modern technical facilities. | Hospitals and Health Care | 🇫🇷 Orsay | 446 |  |
| 9 | [Institut Polytechnique de Paris](https://www.tamtam.ai/c/institut-polytechnique-de-paris) (ip-paris.fr)<br>Public higher education institution combining six top French engineering schools to deliver excellent training programs and cutting-edge research. | Higher Education | 🇫🇷 Palaiseau | 370 | 2019 |
| 10 | [IUT d'Orsay](https://www.tamtam.ai/c/iut-d-orsay) (iut-orsay.universite-paris-saclay.fr)<br>Official page of the University Institute of Technology (IUT) in Orsay, part of the University of Paris-Saclay | Higher Education | 🇫🇷 Gif-sur-Yvette | 216 |  |
| 11 | [Faculté de Pharmacie - Université Paris-Saclay](https://www.tamtam.ai/c/faculte-de-pharmacie-universite-paris-saclay) (pharmacie.universite-paris-saclay.fr)<br>Located in Orsay, the Faculty of Pharmacy is part of the University Paris-Saclay It is the largest academic research center in Pharmacy in France, offering exceptional training programs | Higher Education | 🇫🇷 Orsay | 84 |  |
| 12 | [SITECH France](https://www.tamtam.ai/c/sitech-france) (sitech-france.fr)<br>Providing digital and robotic solutions for construction sites including topography, machine guidance, production optimization software, and training services. | Construction | 🇫🇷 Saint-Michel-sur-Orge | 73 | 2008 |
| 13 | [DAF CONSEIL](https://www.tamtam.ai/c/daf-conseil) (dafconseil.com)<br>Specializes in automotive technical training, support, consulting, engineering, and web-based SaaS solutions for repair industry professionals. | Motor Vehicle Manufacturing | 🇫🇷 Lisses | 49 | 2006 |
| 14 | [Up Start](https://www.tamtam.ai/c/up-start) (upstart-school.fr)<br>Up Start is a school that encourages bold minds to pursue entrepreneurship, offering high-quality programs and hands-on experience to develop future leaders | Higher Education | 🇫🇷 Massy | 47 | 2023 |
| 15 | [ISI](https://www.tamtam.ai/c/isi) (isicrunch.com)<br>Development of SaaS platforms enabling publishers to create accessible, enriched digital textbooks and e-learning modules for learners with disabilities. | IT Services and IT Consulting | 🇫🇷 Gif-sur-Yvette | 41 | 2003 |
| 16 | [INRI'S Formations](https://www.tamtam.ai/c/inri-s-formations) (inris-formations.com)<br>A network specializing in accelerated driving courses, offering a range of courses in auto, moto, boat, and license point recovery, with a focus on digital transition and business development | Professional Training and Coaching | 🇫🇷 Ris-Orangis | 35 | 2013 |
| 17 | [Lycée de la Vallée de Chevreuse](https://www.tamtam.ai/c/lycee-de-la-vallee-de-chevreuse) (lyc-chevreuse-gif.ac-versailles.fr)<br>A general and technological high school providing education and training for students in various academic and technical fields | Higher Education | 🇫🇷 Gif-sur-Yvette | 33 |  |
| 18 | [Télécom Paris Executive Education](https://www.tamtam.ai/c/telecom-paris-executive-education) (executive-education.telecom-paris.fr)<br>Telecom Paris Executive Education offers lifelong training in digital sciences & technologies, providing certifications, short courses, and e-learning for professionals and businesses | Professional Training and Coaching | 🇫🇷 Palaiseau | 23 | 2014 |
| 19 | [En Linea Positiva](https://www.tamtam.ai/c/en-linea-positiva) (vanessamaneirocoach.com)<br>An online network connecting professionals in physical, mental, spiritual, and energetic well-being to promote personal and professional development through virtual events and resources | Professional Training and Coaching | 🇫🇷 Sermaise | 16 |  |
| 20 | [Fondation AgroParisTech](https://www.tamtam.ai/c/fondation-agroparistech) (fondation.agroparistech.fr)<br>The company's foundation supports projects promoting sustainable solutions for food, health, and the environment, encouraging individuals to take action for a better planet | Non-profit Organizations | 🇫🇷 Palaiseau | 12 | 2012 |
| 21 | [Learning Robots](https://www.tamtam.ai/c/learning-robots) (learningrobots.ai)<br>Demonstrates AI and neural network functions, offering varied learning from elementary to professional training, helping individuals understand AI and their own brains. | Software Development | 🇫🇷 Gif Sur Yvette | 12 | 2020 |
| 22 | [Primaveras](https://www.tamtam.ai/c/primaveras) (primaveras.fr)<br>Primaveras helps individuals find balance and fulfillment by harmonizing heart and mind, guiding them to make thoughtful career decisions aligned with their values | Professional Training and Coaching | 🇫🇷 Bièvres | 11 | 2013 |
| 23 | [CMDL Centre des Musiques Didier Lockwood](https://www.tamtam.ai/c/cmdl-centre-des-musiques-didier-lockwood) (cmdl.eu)<br>Established in 2000, the Center for Music offers exceptional jazz and improvisation training, serving as a hub for French and European musicians to teach, perform, and create | Higher Education | 🇫🇷 Évry-Courcouronnes | 10 | 2000 |
| 24 | [FORMAGOGY](https://www.tamtam.ai/c/formagogy) (formagogy.fr)<br>The company specializes in developing human capital through various training solutions such as pedagogical engineering, in-person and digital training, and HR outsourcing | Professional Training and Coaching | 🇫🇷 Tigery | 9 | 2014 |
| 25 | [AËXOR](https://www.tamtam.ai/c/aexor) (aexor.eu)<br>AEXOR is an engineering firm specializing in ATEX industrial risk solutions, training, certification, chemical risk assessment, and pilot project development in various fields | Research Services | 🇫🇷 Les Ulis | 7 | 2007 |
| 26 | [AUDIT'ACT](https://www.tamtam.ai/c/audit-act) (audit-act.com)<br>Legal training organization specializing in lease law, providing project support for lease agreements, assisting with lease negotiations, and optimizing rent and charges for businesses | Leasing Non-residential Real Estate | 🇫🇷 Brétigny-sur-Orge | 6 | 2018 |
| 27 | [Centre Spatial de l'École Polytechnique](https://www.tamtam.ai/c/centre-spatial-de-l-ecole-polytechnique) (polytechnique.edu)<br>The company specializes in space research and development, focusing on innovative solutions in the field of aerospace technology | Aviation and Aerospace Component Manufacturing | 🇫🇷 Palaiseau | 6 |  |
| 28 | [ALITHIA](https://www.tamtam.ai/c/alithia) (alithia.fr)<br>Alithia team offers HR services such as recruitment, training, payroll, organizational management, and consultancy, as well as customized training programs | Human Resources Services | 🇫🇷 La Forêt-Sainte-Croix | 5 | 2005 |
| 29 | [OpenCertif](https://www.tamtam.ai/c/opencertif) (opencertif.fr)<br>OpenCertif helps individuals obtain professional certifications from leading global publishers like Microsoft, Adobe, and Autodesk to enhance skills, credibility, and job opportunities | Professional Training and Coaching | 🇫🇷 Orsay | 5 | 2013 |
| 30 | [ALUCIS](https://www.tamtam.ai/c/alucis) (alucis.ovh)<br>Consulting and training firm for Quality, Safety, Environment (QSE) management systems, helping clients optimize their QSE performance and manage training programs, including Qualiopi certification. | Business Consulting and Services | 🇫🇷 Brunoy | 3 | 2018 |

## How this list is built

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 Nov 11, 2026.

## More company lists in the Essonne department

- [The largest companies in the Essonne department](https://www.tamtam.ai/l/largest-companies-essonne) (1,149)
- [Companies with in-house R&D in the Essonne department](https://www.tamtam.ai/l/r-and-d-companies-essonne) (198)
- [Multinational companies in the Essonne department](https://www.tamtam.ai/l/multinational-companies-essonne) (156)
- [Manufacturers in the Essonne department](https://www.tamtam.ai/l/manufacturers-essonne) (127)
- [Hardware manufacturers in the Essonne department](https://www.tamtam.ai/l/hardware-companies-essonne) (114)
- [Distributors and wholesalers in the Essonne department](https://www.tamtam.ai/l/distributors-and-wholesalers-essonne) (76)
- [IT Services and IT Consulting companies in the Essonne department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-essonne) (70)
- [Professional services firms in the Essonne department](https://www.tamtam.ai/l/professional-services-firms-essonne) (68)
- [Public sector organisations in the Essonne department](https://www.tamtam.ai/l/public-sector-organisations-essonne) (66)
- [Aerospace and defence companies in the Essonne department](https://www.tamtam.ai/l/aerospace-and-defense-companies-essonne) (65)
- [IT services companies in the Essonne department](https://www.tamtam.ai/l/it-services-companies-essonne) (60)
- [Retail chains in the Essonne department](https://www.tamtam.ai/l/retail-chains-essonne) (59)
- [Construction companies in the Essonne department](https://www.tamtam.ai/l/construction-companies-essonne) (56)
- [Software Development companies in the Essonne department](https://www.tamtam.ai/l/software-development-companies-essonne) (51)
- [Pharmaceutical companies in the Essonne department](https://www.tamtam.ai/l/pharmaceutical-companies-essonne) (45)
- [Electronics and semiconductor companies in the Essonne department](https://www.tamtam.ai/l/electronics-companies-essonne) (44)
- [Research institutes in the Essonne department](https://www.tamtam.ai/l/research-institutes-essonne) (42)
- [Events Services companies in the Essonne department](https://www.tamtam.ai/l/events-services-companies-essonne) (41)
- [SaaS companies in the Essonne department](https://www.tamtam.ai/l/saas-companies-essonne) (41)
- [Consulting firms in the Essonne department](https://www.tamtam.ai/l/consulting-firms-essonne) (40)
- [Family-owned companies in the Essonne department](https://www.tamtam.ai/l/family-owned-companies-essonne) (38)
- [Contract manufacturers in the Essonne department](https://www.tamtam.ai/l/contract-manufacturers-essonne) (35)
- [Research Services companies in the Essonne department](https://www.tamtam.ai/l/research-services-companies-essonne) (35)
- [Critical infrastructure operators in the Essonne department](https://www.tamtam.ai/l/critical-infrastructure-operators-essonne) (32)

## The same list elsewhere in France

- [Education providers in Île-de-France](https://www.tamtam.ai/l/education-companies-ile-de-france) (1,300)
- [Education providers in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/education-companies-auvergne-rhone-alpes) (309)
- [Education providers in Grand Est](https://www.tamtam.ai/l/education-companies-grand-est) (215)
- [Education providers in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/education-companies-provence-alpes-cote-dazur) (212)
- [Education providers in Occitanie](https://www.tamtam.ai/l/education-companies-occitanie) (201)
- [Education providers in Nouvelle-Aquitaine](https://www.tamtam.ai/l/education-companies-nouvelle-aquitaine) (173)
- [Education providers in the Hauts-de-Seine department](https://www.tamtam.ai/l/education-companies-hauts-de-seine) (159)
- [Education providers in the Rhône department](https://www.tamtam.ai/l/education-companies-rhone) (154)
- [Education providers in Hauts-de-France](https://www.tamtam.ai/l/education-companies-hauts-de-france) (148)
- [Education providers in Pays de la Loire](https://www.tamtam.ai/l/education-companies-pays-de-la-loire) (143)
- [Education providers in the Bouches-du-Rhône department](https://www.tamtam.ai/l/education-companies-bouches-du-rhone) (119)
- [Education providers in Brittany](https://www.tamtam.ai/l/education-companies-brittany) (112)
- [Education providers in the Nord department](https://www.tamtam.ai/l/education-companies-nord) (103)
- [Education providers in Normandy](https://www.tamtam.ai/l/education-companies-normandy) (100)
- [Education providers in the Haute-Garonne department](https://www.tamtam.ai/l/education-companies-haute-garonne) (94)
- [Education providers in the Gironde department](https://www.tamtam.ai/l/education-companies-gironde) (80)
- [Education providers in the Val-de-Marne department](https://www.tamtam.ai/l/education-companies-val-de-marne) (72)
- [Education providers in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/education-companies-bourgogne-franche-comte) (69)
- [Education providers in the Seine-Saint-Denis department](https://www.tamtam.ai/l/education-companies-seine-saint-denis) (69)
- [Education providers in the Loire-Atlantique department](https://www.tamtam.ai/l/education-companies-loire-atlantique) (68)
- [Education providers in the Hérault department](https://www.tamtam.ai/l/education-companies-herault) (61)
- [Education providers in Paris](https://www.tamtam.ai/l/education-companies-paris) (812)
- [Education providers in Lyon](https://www.tamtam.ai/l/education-companies-lyon) (107)
- [Education providers in Toulouse](https://www.tamtam.ai/l/education-companies-toulouse) (67)

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Source: https://www.tamtam.ai/l/education-companies-essonne