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Top 30 public sector organisations in the Seine-et-Marne department

Tamtam tracks 49 public sector organisations headquartered in the Seine-et-Marne department. This list ranks the 30 largest by number of employees on LinkedIn, led by Université Gustave Eiffel, Département de Seine et Marne and UGAP. Their median headcount is 144. Half of them were founded in 1990 or later. The most common headquarters are Champs-sur-Marne (6), Melun (4) and Lieusaint (2).

🇫🇷 Seine-et-Marne30 companiesUpdated Nov 12, 2026

This list comprises public sector organizations in Seine-et-Marne, predominantly large entities in government administration, higher education, and healthcare. Notable organizations include Université Gustave Eiffel, which combines research and various educational institutions, and the Département de Seine et Marne, providing diverse public services. UGAP acts as the sole general public procurement center in France, while École nationale des ponts et chaussées offers multidisciplinary engineering training. Grand Hôpital de l'Est Francilien delivers medical and psychiatric care, and SDIS 77 focuses on fire prevention and emergency response.

A significant concentration of these public sector bodies, particularly in higher education and government administration, are headquartered in Champs-sur-Marne. This suggests a hub for public service and academic institutions within the department. The founding dates range widely, from the École nationale des ponts et chaussées established in 1747 to ONF Vegetis founded in 2022, indicating a long history of public service alongside more recent initiatives.

#CompanyIndustryHeadquarters EmployeesFounded
1
Université Gustave Eiffeluniv-gustave-eiffel.fr

Combines research, university, architecture school, and engineering schools to provide diverse education and scientific insights for all levels.

Higher Education 🇫🇷 Champs-sur-Marne 2,225 2020
2
Département de Seine et Marneseine-et-marne.fr

Provides diverse public services, including social action, territorial development, culture, youth, and education, to residents, focusing on quality and employee well-being.

Government Administration 🇫🇷 Melun 1,531 n/a
3
UGAPugap.fr

A French public commercial entity founded in 1985, serving various sectors by acting as the sole general public procurement center in France

Government Administration 🇫🇷 Champs-sur-Marne 1,363 n/a
4
École nationale des ponts et chausséesecoledesponts.fr

Engineering school providing multidisciplinary training and advanced research in engineering, economics, and digital and ecological transitions.

Higher Education 🇫🇷 Champs-sur-Marne 1,126 1747
5
Grand Hôpital de l'Est Francilienghef.fr

Integrated hospital network providing extensive medical and psychiatric care across multiple sites, serving the northern Seine-et-Marne population.

Government Administration 🇫🇷 Meaux 904 2017
6
SDIS 77 - Sapeurs-pompiers de Seine-et-Marnesdis77.fr

A public establishment in Seine-et-Marne focused on preventing, protecting, and fighting fires, as well as providing emergency response in the region

Public Safety 🇫🇷 Melun 862 1934
7
Université Paris-Est Marne-la-Valléeuniv-gustave-eiffel.fr

Public university focused on innovation, research, and education, collaborating closely with economic sectors and practicing unique governance models.

Research Services 🇫🇷 Champs-sur-Marne 519 1991
8
Centre hospitalier du Sud Seine-et-Marnech-sud-seine-et-marne.fr

Groups hospitals in Fontainebleau, Montereau-Fault-Yonne, and Nemours, resulting from a shared medical project to provide healthcare services in the region.

Hospitals and Health Care 🇫🇷 Fontainebleau 332 2017
9
EOGN - École des officiers de la gendarmerie nationalegendarmerie.interieur.gouv.fr

Academy trains officers for the French Gendarmerie Nationale since 1918, offering modern pedagogical methods, high-level instruction, and professional expertise for future leaders.

Higher Education 🇫🇷 Melun 270 1918
10
Groupe Hospitalier Sud Ile-de-Franceghsif.fr

Leading public healthcare group in Southern Seine-et-Marne, France, comprised of hospitals, health facilities, and a shared direction with a gerontology establishment

Medical Practices 🇫🇷 Melun 259 n/a
11
IUT Sénart Fontainebleauiutsf.u-pec.fr

The company in Seine-et-Marne offers a wide range of educational programs, from Bachelors to Masters, in various fields with modern facilities for optimal learning conditions

Higher Education 🇫🇷 Lieusaint 170 1998
12
SIAMsiam77.fr

The Intercommunal Sanitation Syndicate of Marne-la-Vallée collects, transports, and treats wastewater, focusing on energy production and circular economy initiatives for environmental transition

Government Relations Services 🇫🇷 Saint-Thibault-des-Vignes 163 1974
13
Paris - Vallée de la Marneagglo-pvm.fr

A dynamic community in Seine-et-Marne, focusing on balanced, sustainable development in the East Parisian and Greater Paris area for residents and businesses

Government Administration 🇫🇷 Torcy 154 2016
14
ONF Vegetisonf-vegetis.fr

Expertise in managing and preserving urban and natural tree heritage, enhancing green spaces, and promoting sustainable environmental practices.

Landscaping Services 🇫🇷 Nemours 151 2022
15
EpaMarne EpaFranceepamarne-epafrance.fr

specialized in urban development and wood construction, focusing on sustainable city planning across multiple communes in eastern Paris region

Architecture and Planning 🇫🇷 Champs-sur-Marne 144 1972

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16
CCI Seine-et-Marneseineetmarne.cci.fr

Support businesses of all sizes and sectors through development stages, represent interests, collaborate with government, and promote regional economic growth.

Government Administration 🇫🇷 Serris 143 n/a
17
Communauté d'Agglomération Melun Val de Seinemelunvaldeseine.fr

Regional urban community managing 20 communes, focusing on sustainable development, economic growth, cultural vitality, and ecological transition.

Government Administration 🇫🇷 Dammarie-lès-Lys 140 2002
18
Mairie de Villeparisisvilleparisis.fr

This company is the official account of the municipality of Villeparisis, a community in Roissy Pays de France, Seine-et-Marne They provide information about the city and its proximity to notable locations

Government Administration 🇫🇷 Villeparisis 134 n/a
19
Communauté d'Agglomération de Marne et Gondoiremarneetgondoire.fr

Management and development of a regional community comprising 20 municipalities, focusing on local governance, population growth, and regional services.

Government Administration 🇫🇷 Bussy-Saint-Martin 132 2001
20
Mairie de Bussy-Saint-Georgesbussysaintgeorges.fr

The company is located in Bussy-Saint-Georges, Seine-et-Marne, a growing city with a significant population increase and attractive amenities for residents and businesses

Government Administration 🇫🇷 Bussy-Saint-Georges 129 n/a
21
Ville de Dammarie-lès-Lysmairie-dammarie-les-lys.fr

Local government managing urban development, green spaces, cultural and sports facilities, supporting community activities, and promoting responsible, dynamic city life.

Government Administration 🇫🇷 Dammarie-lès-Lys 123 n/a
22
Ville de Lagny-sur-Marnelagny-sur-marne.fr

City with rich heritage, local tourism attractions, over 21,000 residents, quality environment, river Marne, and abundant green spaces.

Government Administration 🇫🇷 Lagny-sur-Marne 114 n/a
23
La Ferme du Buissonlafermedubuisson.com

A unique cultural venue in Marne-la-Vallée, offering outdoor spaces, theaters, a cinema, and a contemporary art center, promoting diverse contemporary creations

Entertainment Providers 🇫🇷 Noisiel 95 1990
24
Ville de Lieusaintville-lieusaint.fr

Manages public infrastructure, schools, and cultural centers while developing green spaces, ecological neighborhoods, and transport links for thirteen thousand residents in Seine-et-Marne.

Government Administration 🇫🇷 Lieusaint 92 n/a
25
Epms Fondation Hardyepms-hardy.com

EPMS supports individuals with disabilities in defining and implementing personal projects, focusing on individual needs and abilities through tailored care and support

Government Administration 🇫🇷 Marles-en-Brie 91 1905
26
Ville de Roissy-en-Brieroissyenbrie77.fr

A dynamic city in the heart of Seine-et-Marne, Roissy-en-Brie offers a prime living environment near Paris, with a focus on economic growth and community services Apply for opportunities

Government Administration 🇫🇷 Roissy-en-Brie 85 n/a
27
Lycée Pierre de Coubertin, Meaux(77100)lyceecoubertin-meaux.fr

A diverse high school offering a range of academic and vocational programs for students to prepare them for various paths

Education Administration Programs 🇫🇷 Meaux 76 n/a
28
Ville de Vaux-le-Pénilmairie-vaux-le-penil.fr

A community with 11,039 residents, 280 employees, 18 municipal facilities, over 175 associations, and rich cultural, historical, and natural assets

Government Administration 🇫🇷 Vaux-le-Pénil 69 1256
29
CH Léon Binet - Provins

Diagnostic, treatment, prevention, and health education services, operating a hospital with 399 beds and 60 places, employing 900 professionals.

Hospitals and Health Care 🇫🇷 Provins 67 1974
30
Ecole nationale des Sciences géographiquesgeodata-paris.fr

ENSG is a public engineering school specializing in Geomatics, located in Champs-sur-Marne It is affiliated with IGN and Gustave Eiffel University

Higher Education 🇫🇷 Champs-sur-Marne 64 1941

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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 12, 2026.

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