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The 100 largest companies in the Yvelines department

Tamtam tracks 1,469 companies headquartered in the Yvelines department. This list ranks the 100 largest by number of employees on LinkedIn, led by Dassault Systèmes, Groupe PSA and Eiffage Énergie Systèmes. Their median headcount is 738. Half of them were founded in 1984 or later. The most common headquarters are Velizy-Villacoublay (23), Versailles (22) and Guyancourt (9).

🇫🇷 Yvelines100 companiesUpdated Nov 11, 2026

The largest companies in Yvelines include major players in diverse sectors, predominantly large groups. Dassault Systèmes, for instance, pioneers virtual worlds for sustainable innovation. Groupe PSA (now Stellantis) is a leading automaker, while Eiffage Énergie Systèmes designs and maintains energy systems. ArianeGroup develops space launch systems, and SAVENCIA is a family-owned food group. These firms showcase a strong presence in engineering, manufacturing, and services.

A notable pattern is the concentration of headquarters in Vélizy-Villacoublay, home to several of the largest employers like Dassault Systèmes, Groupe PSA, and multiple Eiffage entities. This suggests a significant industrial and technological hub within the department, with a mix of very large established companies and some older, yet still substantial, enterprises such as Peugeot, founded in 1810.

#CompanyIndustryHeadquarters EmployeesFounded
1
Dassault Systèmes3ds.com

Pioneering virtual worlds since 1981, this company offers a platform enabling customers across industries to collaborate, imagine, and create sustainable innovations for real-life impact.

Software Development 🇫🇷 Velizy-Villacoublay 27,414 n/a
2
Groupe PSAgroupe-psa.com

Leading automaker and mobility provider; now known as Stellantis. This entity is one of the world's foremost in vehicle manufacturing and mobility solutions.

Motor Vehicle Manufacturing 🇫🇷 Velizy-Villacoublay 16,153 n/a
3
Eiffage Énergie Systèmeseiffageenergiesystemes.com

Designs, builds, operates, and maintains energy systems, offering innovative solutions in electrical, industrial, climatic, and energy engineering.

Environmental Services 🇫🇷 Velizy-Villacoublay 15,518 n/a
4
Peugeotpeugeot.com

Offers customers exhilarating, quality driving experiences through racy design and uncompromised quality, adding excitement to every journey.

Motor Vehicle Manufacturing 🇫🇷 Poissy 9,490 1810
5
SAVENCIAsavencia.com

Family-owned food group valorizing milk and cocoa sectors for high-quality products, strong brands, meeting consumer expectations and supporting culinary professionals worldwide.

Food and Beverage Manufacturing 🇫🇷 Viroflay 9,109 n/a
6
Eiffageeiffage.com

Join a close-knit company valuing teamwork, innovation, and individuality to build a human-sized future, welcoming diverse talents to thrive

Construction 🇫🇷 Velizy-Villacoublay 7,684 n/a
7
SOCOTECsocotec.fr

Provides services throughout the entire life cycle of built assets for compliance, extended lifespan, improved performance, and people’s safety in construction, infrastructure, and industry.

Environmental Services 🇫🇷 Guyancourt 7,326 1953
8
ArianeGroupariane.group

Designing, developing, manufacturing, and operating space launch systems and strategic missiles for space and defense sectors.

Aviation and Aerospace Component Manufacturing 🇫🇷 Les Mureaux 6,651 n/a
9
Bouygues Energies & Servicesbouygues-es.fr

Bouygues Energies & Services is a key player in energy and digital transition, focusing on sustainable solutions and workforce development

Environmental Services 🇫🇷 Guyancourt 5,960 n/a
10
Eiffage Constructioneiffageconstruction.com

A leading European construction company specializing in development, real estate, construction, maintenance, and service works with a strong corporate culture

Construction 🇫🇷 Velizy-Villacoublay 5,174 n/a
11
Département des Yvelinesyvelines.fr

Local government providing social support, education, mobility, and territorial development services to improve daily life for residents.

Government Administration 🇫🇷 Versailles 4,000 1964
12
Eiffage Génie Civileiffagegeniecivil.com

Specializing in civil engineering, this company designs, builds, maintains, and demolishes ambitious structures in France and internationally with a human perspective

Civil Engineering 🇫🇷 Velizy-Villacoublay 3,786 n/a
13
Eiffage Routeeiffageroute.com

An expert in urban development, Eiffage Route contributes to improving the French road network through design, construction, maintenance, and various other projects

Construction 🇫🇷 Velizy-Villacoublay 3,480 n/a
14
KRYS GROUPkrys-group.com

The company operates in optical and hearing health, distributing and manufacturing eyewear. It is a cooperative, focusing on human values and innovation for its products.

Retail 🇫🇷 Bazainville 3,310 1966
15
KNDS Franceknds.com

Designing, developing, producing armored vehicles, artillery, guns, turrets, ammunition, and robotic systems, with customer support, for armed forces land combat challenges.

Defense and Space Manufacturing 🇫🇷 Versailles 2,894 n/a
16
Novares Groupnovaresteam.com

Designs, manufactures complex plastic components and systems for the automotive industry, focusing on greener, lighter, and connected cars with intuitive interfaces.

Motor Vehicle Manufacturing 🇫🇷 Velizy-Villacoublay 2,833 1955
17
Académie de Versaillesac-versailles.fr

The company oversees education in four departments, serving 11 million students and managing 90,000 employees in various roles

Primary and Secondary Education 🇫🇷 Versailles 2,769 1972
18
HEC Parishec.edu

Offers diverse management education programs including Masters, MBA, PhD, and Executive Education for future leaders and current executives, with focus on education and research.

Higher Education 🇫🇷 Jouy-en-Josas 2,765 n/a
19
UVSQ Université de Versailles Saint-Quentin-en-Yvelinesuvsq.fr

Provides diverse higher education, conducts innovative research across various fields, and fosters technological advancements with strong industry and international partnerships.

Research Services 🇫🇷 Versailles 2,170 1991
20
Crédit Agricole Group Infrastructure Platformca-groupinfrastructureplatform.fr

Becoming a leading technology hub, developing new digital platforms, ensuring high security and confidentiality, positively impacting 54 million people.

IT Services and IT Consulting 🇫🇷 Guyancourt 2,035 2019
21
Bureau Valléebureau-vallee.fr

French retailer selling discounted stationery, office, tech, and furniture products to individuals and professionals across 240 stores and online.

Retail 🇫🇷 Les Clayes-sous-Bois 1,726 1990
22
Safran Landing Systemssafran-group.com

Specializes in landing gear systems, providing innovative solutions for aircraft safety, performance, and maintenance in both commercial and military sectors.

Aviation and Aerospace Component Manufacturing 🇫🇷 Velizy-Villacoublay 1,717 n/a
23
Banque Populaire Val de Francebanquepopulaire.fr

This cooperative provides banking and insurance services, helping 550,000 clients and 132,700 members realize their personal and professional life projects.

Banking 🇫🇷 Montigny-le-Bretonneux 1,524 n/a
24
Groupe Léon Grosseleongrosse.fr

Specializes in large-scale construction and renovation projects including stadiums, transportation hubs, cultural sites, and sports facilities across France.

Construction 🇫🇷 Versailles 1,517 1881
25
LGMlgm.group

The company offers technological, digital, and software engineering consulting, innovative solution design, and complex electronics production, supporting critical systems and industrial performance.

Engineering Services 🇫🇷 Velizy-Villacoublay 1,469 1991
26
Leasysleasys.com

Offers long-term rental solutions and company fleet management systems across Europe for efficient, rational, safe, and sustainable mobility for businesses and individuals.

Financial Services 🇫🇷 Poissy 1,440 n/a
27
BTP Consultantsbtp-consultants.fr

Technical control, SPS coordination, and real estate diagnostics, with a focus on R&D, BIM, and off-site modular construction for various project needs.

Environmental Services 🇫🇷 Montigny-le-Bretonneux 1,418 1996
28
Fenwick-Lindebit.ly

Listening to clients, creating innovative, tailored material handling solutions, with a focus on forklifts, intralogistics, robotics, and energy efficiency.

Industrial Machinery Manufacturing 🇫🇷 Élancourt 1,376 1985
29
Arquusarquus-defense.com

Leading supplier of ground military vehicles to the French army, combining expertise from Renault Trucks Defense, ACMAT, and Panhard, with 130 years of automotive history.

Defense and Space Manufacturing 🇫🇷 Versailles 1,309 n/a
30
ERA IMMOBILIER Franceeraimmobilier.com

Established in 1971, this real estate franchise network is a leader in Europe with over 1,150 franchise locations in 39 countries, fostering a Gagnant / Gagnant (Win/Win) spirit

Real Estate 🇫🇷 Versailles 1,258 1971
31
Konica Minolta Business Solutions Francekonicaminolta.fr

Providing digital transformation solutions including imaging, cloud storage, IT services, and healthcare solutions Specializing in printing, AI technology, and eco-friendly initiatives

IT Services and IT Consulting 🇫🇷 Carrières-sur-Seine 1,148 1873
32
SDIS 78sdis78.fr

Public establishment managing fire and rescue services in Yvelines, under mayors and prefects. Responsible for operations, personnel, and equipment.

Government Administration 🇫🇷 Versailles 1,061 1996
33
Nature et Découvertesnatureetdecouvertes.com

Offers products for well-being, outdoor, home, games, and books. Provides concrete solutions for sustainable lifestyles, committed to living. A meaningful gift brand.

Retail 🇫🇷 Versailles 1,032 1990
34
SOURIAU-SUNBANK Connection Technologies by Eatonsouriau.com

An intelligent power management company focused on improving quality of life, protecting the environment, and helping customers manage power efficiently

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Versailles 965 n/a
35
ENSIOensio.eu

Specialized teams provide turnkey solutions for digital networks, energy networks, and maintenance services with a focus on sustainability and safety.

Telecommunications 🇫🇷 Velizy-Villacoublay 964 2008
36
Eiffage Raileiffagerail.com

Specializes in rail infrastructure construction, maintenance, and modernization, providing comprehensive solutions for railway networks and urban transit systems.

Rail Transportation 🇫🇷 Velizy-Villacoublay 938 n/a
37
SEPURsepur.com

With over 50 years of expertise, the company specializes in waste management and cleaning services for communities, including waste collection, recycling, and green waste processing

Environmental Services 🇫🇷 Thiverval-Grignon 937 1965
38
Jungheinrich France SASjungheinrich.fr

International leader in handling equipment, storage systems, and goods flow management. Offers forklifts, racking, services, and consulting for warehouse logistics needs.

Machinery Manufacturing 🇫🇷 Velizy-Villacoublay 909 n/a
39
CULLIGAN FRANCEculligan.fr

Specialist in water treatment providing softeners, purifiers, and water fountains for homes, businesses, and communities ensuring quality water.

Consumer Services 🇫🇷 Versailles 862 n/a
40
Service d’infrastructure de la Défensedefense.gouv.fr

Manages, builds, and maintains the French Ministry of Armed Forces' real estate, ensuring infrastructure support and energy control for military operations domestically and abroad.

Construction 🇫🇷 Versailles 850 2005
41
Stellantis &You, Sales and Servicesstellantisandyou.com

Providing sales and customer services support, focusing on enhancing client experience and facilitating vehicle-related transactions and assistance.

Retail Motor Vehicles 🇫🇷 Poissy 838 2021
42
Lycée Sainte-Genevièvebginette.com

A private lycée in Versailles offering preparatory classes for French Grandes Écoles with high success rates at entrance exams Founded in 1854

Higher Education 🇫🇷 Versailles 812 n/a
43
Emotorsemotors.com

Design and manufacturing of electric machines for on-road vehicles, providing solutions for propulsion and power generation in the automotive industry.

Motor Vehicle Manufacturing 🇫🇷 Carrières-sous-Poissy 811 2018
44
IT&COMitandcom.fr

Specialist in computer science, professional training, and print and web communication services

Computer Networking Products 🇫🇷 Orgeval 795 2014
45
AXEO Services - La Poste Groupeaxeoservices.fr

A leading network in France offering a wide range of home and business services, including cleaning, childcare, elderly care, security, and maintenance

Individual and Family Services 🇫🇷 Le Mesnil-le-Roi 795 2006
46
Clemessy Servicesclemessy.com

A leading French provider of industrial services, offering maintenance, engineering, and construction solutions for various industries worldwide

Industrial Machinery Manufacturing 🇫🇷 Velizy-Villacoublay 778 n/a
47
IVALIS Groupivalisgroup.com

Offers outsourced stocktaking, supply-chain audits, RFID solutions, product identification, geolocation services, and electronic shelf label installations for retail and supply-chain industries internationally.

Retail 🇫🇷 Montigny-le-Bretonneux 775 n/a
48
Carmatcarmatsa.com

Designs, manufactures, and markets the Aeson artificial heart, a physiological and self-regulated device for end-stage biventricular heart failure patients awaiting transplant.

Medical Equipment Manufacturing 🇫🇷 Velizy-Villacoublay 760 2008
49
Ville de Versaillesversailles.fr

A historic city known for its palace and gardens, offering a vibrant local economy, employment opportunities in various fields, and a high quality of life

Government Administration 🇫🇷 Versailles 757 n/a
50
ENVEA Globalenvea.global

Provides advanced certified air quality and emissions monitoring solutions to help industries meet environmental targets and move towards net zero. Prevent harmful environmental pollution.

Industrial Machinery Manufacturing 🇫🇷 Poissy 738 1978

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51
Credit Agricole Payment Servicesca-payment-services.com

Designing payment solutions for group entities, processing transactions, and developing innovative, secure service offerings with leading market standards.

Financial Services 🇫🇷 Guyancourt 736 1972
52
Château de Versailleschateauversailles.fr

The company is a public institution maintaining and showcasing cultural heritage like the Versailles Palace, Trianon, gardens, and Marly domain They collaborate with various organizations

Museums, Historical Sites, and Zoos 🇫🇷 Versailles 732 1623
53
Schindler Franceschindler.fr

Design, manufacture, install, maintain, and modernize elevators, escalators, moving walkways, and building mobility management products worldwide.

Transportation Equipment Manufacturing 🇫🇷 Velizy-Villacoublay 719 n/a
54
DTPdtp-bouygues-construction.com

global construction developer builds structures and buildings worldwide, focusing on sustainable practices and low-carbon materials for diverse needs like housing, healthcare, and infrastructure.

Mining 🇫🇷 Guyancourt 717 n/a
55
DIAM Group · Retail & Merch Solutionsdiaminter.com

Providing end-to-end retail and merchandising services including design, production, installation, and after-sales support with global presence and sustainability focus.

Advertising Services 🇫🇷 Les Mureaux 688 n/a
56
Simply Market Francefr.whatjobs.com

French supermarket chain providing fresh products and local service across three hundred locations through integrated or franchised stores with specialized management teams.

Retail Groceries 🇫🇷 Jouy-en-Josas 663 2009
57
Stellantis Financial Servicesstellantisfinancialservices.com

Providing sustainable, innovative vehicle products and solutions worldwide, enhancing customer experience with accessible, affordable, and eco-friendly mobility options.

Financial Services 🇫🇷 Poissy 662 1919
58
Stellantis Finance & Services - CREDIPARstellantis-finance-services.fr

Offers financing solutions for purchasing and leasing vehicles across 11 Stellantis brands in France, plus associated services like insurance and maintenance.

Financial Services 🇫🇷 Poissy 651 1979
59
Hôpital de Poissy-Saint-Germain-en-Layeghtyvelinesnord.fr

Public hospital in Yvelines, France, providing healthcare, education, and research across eight specialized care poles for all ages

Hospitals and Health Care 🇫🇷 Poissy 636 n/a
60
Ecole Supérieure des Techniques Aéronautiques et de Construction Automobileestaca.fr

Educates engineers passionate about technology, addressing new mobility needs. Focuses on aeronautics, automotive, space, urban, and rail transport challenges for tomorrow.

Higher Education 🇫🇷 Montigny-le-Bretonneux 625 1925
61
Juridicajuridica.fr

Leading provider of legal protection insurance in France, offering innovative solutions for individuals and professionals by managing disputes and legal expenses

Insurance 🇫🇷 Marly-le-Roi 617 1981
62
Eiffage Métaleiffagemetal.com

Specializing in turnkey metal construction, Eiffage Métal designs and builds building envelopes, facades, and complex multi-technical projects, with a focus on industrial and wind energy sectors

Construction 🇫🇷 Velizy-Villacoublay 607 n/a
63
SELLsell-marketing.com

A French independent company helps businesses master product information to optimize their sales strategy using the SELL BASE cloud platform

Software Development 🇫🇷 Croissy-sur-Seine 587 2006
64
DGFdeliceetcreation.fr

Supplies professional bakers and pastry chefs with high-quality raw materials, private label products, technical recipes, culinary training, and international pastry competition sponsorship.

Wholesale 🇫🇷 Chanteloup-les-Vignes 583 1986
65
CAR & DRIVER

A transportation/trucking/railroad company based in Versailles, France, specializing in providing efficient and reliable transportation solutions for clients

Truck Transportation 🇫🇷 Versailles 576 n/a
66
AGE D'OR Servicesagedorservices.com

A leading home care network specializing in assisting seniors with a wide range of services to maintain their well-being and independence

Individual and Family Services 🇫🇷 Le Mesnil-le-Roi 568 1991
67
Atemeateme.com

The company specializes in video delivery solutions such as compression, packaging, cloud DVR, DAI, and CDN for content owners, broadcasters, and service providers

Telecommunications 🇫🇷 Velizy-Villacoublay 550 1991
68
Optionsoptions.fr

Rental of catering equipment, tableware, food stations, and event furniture, plus design and production of beautiful event spaces.

Events Services 🇫🇷 Les Mureaux 519 1981
69
Pôle Emploipole-emploi.fr

Distributor of IKON, a platform helping companies improve IT service performance and business activities through unified real-time monitoring and data management.

Government Administration 🇫🇷 Plaisir 511 n/a
70
Emitech Groupemitech.fr

Provides global testing services for automotive, aeronautic, and defense industries, including environmental, mechanical, EMC, and electrical tests on components, systems, and vehicles.

Business Consulting and Services 🇫🇷 Montigny-le-Bretonneux 510 1989
71
PESCHAUD INTERNATIONALpeschaud-international.com

Provides oilfield logistics services including rig-moves, transport, lifting, handling, and lodging in remote, challenging environments, utilizing specialized equipment and manpower.

Transportation, Logistics, Supply Chain and Storage 🇫🇷 Saint-Germain-en-Laye 497 1956
72
HexaWarehexaware.net

HexaWare offers tailored IT solutions and support to ensure continuity of your computer systems and constant access to your data

IT Services and IT Consulting 🇫🇷 Versailles 487 2003
73
CPAM des Yvelinesameli.fr

A private organization serving the CNAM for public service, protecting over 15 million individuals by implementing healthcare policies locally in Yvelines

Government Administration 🇫🇷 Versailles 480 1981
74
Advertising Agencyadvertising-agency.fr

Advertising Agency specializes in visual communication, marketing, and advertising consulting They create various online and offline communication materials for clients

Advertising Services 🇫🇷 Sartrouville 469 1989
75
Sodicam2 - Renault Groupsodicam2.fr

Recruits, trains, and manages a sales force for automotive parts and accessories, ensuring performance and adaptation to market changes through employee development.

Motor Vehicle Manufacturing 🇫🇷 Guyancourt 440 1975
76
Fichet Groupfichetgroup.fr

Fichet Group offers creative and expert security solutions for businesses, banks, public administrations, retail, and homes, addressing evolving physical and cyber risks for a safer world.

Security and Investigations 🇫🇷 Velizy-Villacoublay 438 1998
77
Grand Paris Seine & Oisegpseo.fr

management of a large urban and rural territory focusing on economic sectors, innovation, infrastructure, environment, and public services organization

Government Administration 🇫🇷 Aubergenville 429 2016
78
VITALRESTvitalrest.com

VITALREST is a family-owned company specializing in catering and hotel services for healthcare facilities, focusing on culinary expertise and customer satisfaction Offering various job opportunities nationwide

Food and Beverage Services 🇫🇷 Saint-Germain-en-Laye 428 2001
79
Ville de Mantes-la-Joliemanteslajolie.fr

City near a natural park balancing historic center, residential areas, economic development, urban planning, and upcoming RER line connection.

Government Administration 🇫🇷 Mantes-la-Jolie 420 n/a
80
Stellantis Financial Services UK, Germany and Austriastellantisfinancialservices.com

Provides vehicle finance solutions for brands within the Stellantis Group. Additionally, offers instant access and fixed-term deposit accounts in Germany.

Financial Services 🇫🇷 Poissy 411 1920
81
4Dus.4d.com

A full-stack hybrid Low-Code Development platform that enables quick creation and deployment of web, mobile, and desktop applications for businesses worldwide

Software Development 🇫🇷 Le Pecq 405 1984
82
GROUPE LR TECHNOLOGIESlrtechnologies.fr

Provides human-centered engineering services, focusing on well-being, CSR, skills development, and recognition across various technology sectors like AI, cybersecurity, and critical software.

IT Services and IT Consulting 🇫🇷 Versailles 397 2014
83
Saphir Groupquariq.com

Provides Industry 4.0 solutions, industrial automation, MES/MOM, PLM, data and AI, OT security for manufacturers, from strategy to execution globally.

IT Services and IT Consulting 🇫🇷 Montigny-le-Bretonneux 380 2024
84
EOWINeowin.com

A leading content creation and management company with 30 years of experience, serving various industries worldwide in all aspects of information lifecycle

IT Services and IT Consulting 🇫🇷 Guyancourt 378 1989
85
COLAS DIGITAL SOLUTIONScolasdigitalsolutions.com

Drives global IT and digital transformation projects for construction and transport infrastructure. Manages data centers, applications, IoT, Cloud, Big Data, and AI.

IT Services and IT Consulting 🇫🇷 Velizy-Villacoublay 377 1929
86
Ineo Defense

Provides technological solutions and services for defense and security, covering critical communications, electronic warfare, operational system protection, and site surveillance.

Defense and Space Manufacturing 🇫🇷 Velizy-Villacoublay 355 n/a
87
Les Diaconesses de Reuillylesdiaconesses.org

Nonprofit organization providing healthcare, social support, inclusion for disabled, elderly care, end-of-life assistance, and healthcare professional training.

Health and Human Services 🇫🇷 Versailles 354 1841
88
Centre Hospitalier de Plaisirch-plaisir.fr

Provides diverse, specialized hospital and outpatient care in South Yvelines, including radiology, MRI, and CT scans, focusing on gerontological, medico-social, and mental health.

Hospitals and Health Care 🇫🇷 Plaisir 349 n/a
89
sophrologue

Medical practice located in Rambouillet, France specializing in sophrology services to promote mental and physical well-being

Medical Practices 🇫🇷 Rambouillet 349 n/a
90
Egis en Franceegis-group.com

International consulting, construction engineering, and mobility services company. Designs and operates smart infrastructure and buildings addressing climate challenges for balanced and sustainable territorial development.

Civil Engineering 🇫🇷 Guyancourt 349 n/a
91
Centre hospitalier de Rambouilletch-rambouillet.fr

Provides diverse medical services including imaging, surgery, cardiology, dialysis, emergency care, and laboratory support for local population.

Hospitals and Health Care 🇫🇷 Rambouillet 345 1731
92
Crous de Versaillescrous-versailles.fr

State operator in charge of all student life aspects, serving 206,000 students in the Versailles academic region through 700 agents

Government Administration 🇫🇷 Versailles 344 1955
93
Mairie des Mureauxlesmureaux.fr

Provides administrative and local government services to residents and businesses in the Mureaux community within Yvelines, Île-de-France region.

Government Administration 🇫🇷 Les Mureaux 342 n/a
94
Eiffage Concessionseiffageconcessions.com

The company specializes in developing sustainable infrastructure projects, focusing on transport, renewable energy, urban facilities, and quality of life improvement for communities

Facilities Services 🇫🇷 Velizy-Villacoublay 338 n/a
95
STAR MARKETstarmarket.com

A food production company based in Maurepas, France, creating various food products for consumers.

Food and Beverage Manufacturing 🇫🇷 Maurepas 328 n/a
96
Woodford County Public Schoolsbeechwood.kyschools.us

A highly reputable and long-standing educational institution known for its outstanding academic performance in the state

Primary and Secondary Education 🇫🇷 Versailles 324 1852
97
BATEGbateg.fr

Specializes in constructing high-rise buildings, offices, and public facilities in Île-de-France, focusing on innovation and operational excellence.

Construction 🇫🇷 Velizy-Villacoublay 322 1982
98
Riva Acierrivaacier.com

Over 45 years experience, seven industrial sites in France, leading steel long products manufacturer and largest scrap metal recycler in France.

Primary Metal Manufacturing 🇫🇷 Gargenville 312 1976
99
Airbus Defence and Space Cybercyber.airbus.com

Designing, developing, integrating, and deploying reliable cyber security solutions for defense, governmental, and institutional customers, leveraging 30 years of expertise.

IT Services and IT Consulting 🇫🇷 Élancourt 308 n/a
100
BOUYGUES CONSTRUCTION ITbouygues-construction.fr

Based in Guyancourt, France, provides information technology and services. This company focuses on delivering IT solutions for various needs.

IT Services and IT Consulting 🇫🇷 Guyancourt 307 n/a

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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 11, 2026.

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