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The 30 largest companies with in-house R&D in the Val-de-Marne department

Tamtam tracks 134 companies with in-house R&D headquartered in the Val-de-Marne department. This list ranks the 30 largest by number of employees on LinkedIn, led by Ubisoft, LCL and DAHER. Their median headcount is 1,070. Half of them were founded in 1962 or later. The most common headquarters are Ivry-sur-Seine (4), Arcueil (3) and Cachan (3).

🇫🇷 Val-de-Marne30 companiesUpdated Nov 12, 2026

These companies with in-house R&D in Val-de-Marne represent a mix of sectors, including long-established industrial players and public institutions alongside more recent technology and healthcare firms. Among them are Ubisoft, a global developer of gaming experiences like Assassin's Creed; DAHER, an aircraft manufacturer and industrial service provider; LCL, offering banking services; and Gustave Roussy, a leading cancer center in Europe. The list also features ONF (Office National des Forêts), managing public forests, and Délifrance, a global provider of bakery products.

A notable characteristic of this group is the presence of several public administration bodies and institutions alongside private enterprises. Companies like IGN (French Mapping Agency) and Météo France highlight a strong public sector presence in R&D within the department, complementing the activities of private firms in diverse fields such as pharmaceuticals (BIOCODEX) and specialized dental products (Septodont).

#CompanyIndustryHeadquarters EmployeesFounded
1
Ubisoftubisoft.com

Global developer crafting original gaming experiences and entertainment across diverse brands like Assassin’s Creed, Far Cry, and Tom Clancy’s series for worldwide players.

Computer Games 🇫🇷 Saint-Mandé 21,273 1986
2
LCLlcl.fr

Provides banking services for individuals, professionals, businesses, and private banking clients through a national network of branches and employees.

Banking 🇫🇷 Villejuif 16,616 n/a
3
DAHERdaher.com

Aircraft manufacturer, industrialist, industrial service provider, and logistician, designing and developing value-added solutions for aeronautical and industrial clients.

Aviation and Aerospace Component Manufacturing 🇫🇷 Orly 8,119 1863
4
ONF (Office National des Forêts)onf.fr

Manages 11 million hectares of public forests. Ensures maintenance, development, and renewal. Balances wood production, environmental preservation, and public access.

Government Administration 🇫🇷 Maisons-Alfort 3,354 1964
5
Sabena technicssabenatechnics.com

French independent provider of maintenance and modification solutions for civil and military aircraft operators, offering airframe, component MRO, upgrades, CAMO, supply chain, painting, and training.

Aviation and Aerospace Component Manufacturing 🇫🇷 Orly 3,151 n/a
6
EFREI - Grande école du numériqueefrei.fr

This private engineering school trains students in computer science and digital technology, offering 12 master's specializations, with some courses delivered in English.

Higher Education 🇫🇷 Villejuif 2,240 1936
7
Gustave Roussygustaveroussy.fr

A leading cancer center in Europe, specializing in prevention, treatment, research, and education for patients, with two locations in Grand Paris

Hospitals and Health Care 🇫🇷 Villejuif 2,076 n/a
8
Délifrancedelifrance.com

A global provider of bakery, viennoiserie, pastry, and savory products, committed to quality, tradition, and innovation to help customers delight consumers worldwide

Food and Beverage Manufacturing 🇫🇷 Ivry-sur-Seine 2,017 n/a
9
Chantellechantelle.com

An international creative studio designing lingerie since 1876, committed to respect, creativity, honesty, and quality, aiming to create a more inclusive and sustainable society

Textile Manufacturing 🇫🇷 Cachan 1,927 n/a
10
METEO FRANCEmeteofrance.com

A public administration focused on observing and forecasting weather patterns, ensuring the safety of life and property through various centers worldwide

Government Administration 🇫🇷 Saint-Mandé 1,748 1994
11
BIOCODEXbiocodex.com

Develops and markets pharmaceuticals, focusing on microbiota care, women's health, and orphan diseases globally through subsidiaries and distributors.

Pharmaceutical Manufacturing 🇫🇷 Gentilly 1,659 1953
12
Institut national de l'audiovisuelina.fr

Cultural audiovisual enterprise preserving, enhancing, and transmitting French audiovisual heritage since 1974 Also, an international center for media and digital content research and training

Broadcast Media Production and Distribution 🇫🇷 Bry-sur-Marne 1,451 1975
13
IGN - French Mapping Agency (Institut Géographique National)ign.fr

The company operates as the state's geospatial and forestry information provider, developing reference data, products, and services for various public policy support

Government Administration 🇫🇷 Saint-Mandé 1,268 1940
14
Centre Hospitalier Intercommunal de Créteilchicreteil.fr

A hospital in Créteil specializing in gynecology, obstetrics, pediatrics, pulmonology, ophthalmology, and ENT services, known as "CHIC"

Hospitals and Health Care 🇫🇷 Créteil 1,127 1937
15
Septodontseptodontcorp.com

Leading pharmaceutical and medical device provider specializing in dental anesthesia and developing bioactive and biocompatible therapeutic solutions for dentistry.

Medical Equipment Manufacturing 🇫🇷 Saint-Maur-des-Fossés 1,070 1932

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16
ADVANS Groupadvans-group.com

Engineering firm specializing in electronic, software, and mechanical systems; handles projects or provides expertise in microelectronics, software development, data/AI, and mechanical engineering.

Engineering Services 🇫🇷 Cachan 1,040 2000
17
Cenexicenexi.com

A French CDMO with 4 manufacturing sites and 1 development center, specializing in medicinal products, particularly in sterile expertise and cytotoxic products

Pharmaceutical Manufacturing 🇫🇷 Fontenay-sous-Bois 995 2004
18
INNOTHERAinnothera.com

Develops and manufactures healthcare products, including elastic compression, orthopedics, podiatry, hygiene, and daily medications, for widespread distribution to patients.

Pharmaceutical Manufacturing 🇫🇷 Arcueil 981 1913
19
U-Shin

Company recently renamed to Minebea AccessSolutions, opening a new chapter with broader perspective and enhanced capacities. This company manufactures door and access systems.

Motor Vehicle Manufacturing 🇫🇷 Alfortville 968 1962
20
IT Link Groupitlink.fr

Innovates and optimizes connected systems, developing products and services in embedded intelligence, IoT, data, mobile apps, safety, business systems, engineering, and change management.

IT Services and IT Consulting 🇫🇷 Le Kremlin-Bicêtre 882 1986
21
EPITA: Ecole d'Ingénieurs en Informatiqueepita.fr

Training bold individuals in IT and digital innovation to drive societal success, transforming daily lives, and addressing major technological, industrial, economic, and social challenges.

Higher Education 🇫🇷 Le Kremlin-Bicêtre 846 1984
22
Aramisautoemploi-aramisauto.com

Revolutionizing car buying in Europe by offering new and used sales of all makes under one brand, providing exceptional buying experiences

Retail 🇫🇷 Arcueil 793 2001
23
Essilor Groupessilor.com

A leading ophthalmic optics company that designs, manufactures, and markets a wide range of lenses to improve and protect eyesight worldwide

Business Consulting and Services 🇫🇷 Charenton-le-Pont 727 n/a
24
SIAé - Service industriel de l'aéronautiquedefense.gouv.fr

Provides maintenance and design for French military aircraft and helicopters, offering jobs in aeronautical maintenance, engineering, and support functions like logistics and HR.

Aviation and Aerospace Component Manufacturing 🇫🇷 Arcueil 498 1934
25
Sodernsodern.com

A global leader in space optronics, neutron technology, and defense, providing innovative solutions for climate, internet connectivity, agriculture, and resource efficiency 🌍🛰️👩🔬🇫🇷

Defense and Space Manufacturing 🇫🇷 Limeil-Brévannes 426 1962
26
Cemex Francecemex.fr

A global leader in cement, aggregates, and ready-mix concrete solutions, offering innovative and sustainable products to improve construction and urban living worldwide

Wholesale Building Materials 🇫🇷 Rungis 420 1906
27
ESTPestp.fr

A leading engineering school in France specializing in construction and urban planning, with a strong alumni network and partnerships worldwide

Higher Education 🇫🇷 Cachan 418 1891
28
Forsee Powerforseepower.com

Industrial group specializing in smart battery systems for various electric transport, including design, assembly, supply, installation, commissioning, maintenance, financing, and second-life solutions.

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Ivry-sur-Seine 410 2011
29
ESIEA - École d'Ingénieur·e·s d'un numérique utileesiea.fr

The company is a highly reputable engineering school specializing in digital sciences and technologies, offering programs in information systems and embedded systems

Higher Education 🇫🇷 Ivry-sur-Seine 301 1958
30
STUDECstudec.fr

Specializing in after-sales customer support solutions, we serve industrial sectors such as aeronautics, defense, space, naval, and energy with innovative technical documentation and software development

IT Services and IT Consulting 🇫🇷 Ivry-sur-Seine 272 1956

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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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