The largest companies with in-house R&D in Seine-et-Marne include a mix of established industrial firms and younger technology-focused businesses. Key players are Grand Hôpital de l'Est Francilien, an integrated hospital network; ACRELEC, a global technology company for retail; Fives Maintenance, specializing in industrial maintenance; and ENCRES DUBUIT, which develops specialized inks. These companies span healthcare, manufacturing, and IT services.
A notable pattern is the diversity of industries represented, from healthcare and chemical manufacturing to specialized machinery and agricultural solutions. For example, Eléphant Vert focuses on sustainable agriculture, while KLUBB GROUP designs professional vehicles. This suggests a varied economic landscape in Seine-et-Marne, supporting different types of research and development activities.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
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. |
904 | |||
| 2 |
ACRELECacrelec.com
Global technology company transforming customer experiences for restaurants and retail brands through innovative platforms that enhance engagement, efficiency, and operations globally |
689 | |||
| 3 |
Fives Maintenancefivesgroup.com
Specializing in industrial maintenance for over twenty years, offering tailored solutions to ensure high availability of production facilities with a focus on safety and environmental responsibility |
495 | |||
| 4 |
ENCRES DUBUITencresdubuit.com
Development and manufacturing of specialized inks for electronics, packaging, automotive, and industrial applications with environmental responsibility and innovation focus. |
330 | |||
| 5 |
Fondation Ellen Poidatzfondationpoidatz.com
Management of pediatric rehabilitation centers, support for disabled children and adults, adapted schooling, and research in healthcare innovation. |
329 | |||
| 6 |
Eléphant Vertelephant-vert.com
Develops and provides sustainable agricultural solutions, partnering with farmers to improve crop quality and harvest sustainability through innovative approaches. |
329 | |||
| 7 |
KLUBB GROUPklubb.com
Designs and converts professional vehicles into business solutions for aerial work platforms, refueling, and roadside assistance, focusing on innovation and sustainability. |
265 | |||
| 8 |
Techtronic Industries France - TTIttigroup.com
A global leader in power tools, accessories, outdoor equipment, and floor care, serving professionals and DIY enthusiasts with premium brands |
173 | |||
| 9 |
SMC Francesmc.eu
Manufacture and supply of pneumatic automation components including actuators, valves, connectors, air treatment, vacuum and fluid products with personalized service. |
164 | |||
| 10 | 159 | ||||
| 11 |
AS INTERNATIONALas-inter.com
A global network offering quality solutions in textile, clothing, home, and leisure industries for manufacturers, brands, and distributors through expertise and innovation |
148 | |||
| 12 |
SCHILLER Francemediprostore.com
Development, production, and distribution of medical devices for cardio-pulmonary diagnosis, patient monitoring, and emergency medicine in France. |
143 | |||
| 13 |
ADR - ALCENadr-alcen.com
Design and manufacture of high-precision ball bearings and integrated rotating systems for specialized industries including aeronautics, space, defense, medical, and energy. |
135 | |||
| 14 |
STIHL Francestihl.fr
Design and manufacture of high-performance garden, forestry, and green space tools including chainsaws, trimmers, mowers, and blowers. |
127 | |||
| 15 |
JPB SYSTEMEjpb-systeme.com
Design and manufacture of patented self-locking devices for aerospace applications, ensuring quality, customization, and easy removal with ratchets. |
124 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
MULTIVAC Francemultivac.com
Global leader in providing packaging solutions for food, healthcare, and industrial products, offering a wide range of technologies, automation, and quality control systems |
103 | |||
| 17 |
ITQ GROUPitqgroup.fr
French group specializing in security integration and maintenance services for public and private sectors, offering a range of solutions such as video surveillance and access control |
99 | |||
| 18 |
AREALareal-topkapi.com
Develops SCADA software platform for monitoring automated processes in industry, environment, energy, building, infrastructure, and transport sectors, collaborating with partners globally. |
95 | |||
| 19 |
MEIKO Francemeiko.com
Development of professional washing, cleaning, disinfection techniques, and sustainable biowaste treatment systems supporting exceptional performance and hygiene worldwide. |
92 | |||
| 20 |
TAM GROUPEtamgroupe.fr
Specialist manufacturing and distribution of concrete construction products, supporting design, delivery, and installation across France with expert teams. |
88 | |||
| 21 |
GT Companygtcompany.fr
This company engages in the creation, manufacturing, importing, storage, distribution, and delivery of various products |
86 | |||
| 22 | 86 | ||||
| 23 |
KOMPAN Francekompan.com
Design and provide custom playgrounds and free-access fitness areas to create engaging, inclusive public spaces for all ages. |
82 | |||
| 24 |
Aristidearistide.paris
Specializes in retail lighting solutions enhancing customer experience and maximizing sales through over 10 years of sensory marketing expertise. |
81 | |||
| 25 |
GEZE Francegeze.fr
Specialist in door and window systems offering compliant, sustainable, accessible products including automatic doors, window motors, and maintenance services. |
73 | |||
| 26 |
GAINERIE 91 - Groupegainerie91.com
Specializing in handcrafted products for luxury brands, artisans at this company provide exceptional quality in leatherwork, woodwork, laquering, and more Customized designs meet client specifications |
73 | |||
| 27 |
Beissier Francebeissier.fr
Designs, manufactures, and markets ready-to-use and powder plasters for painters, focusing on quality, customer support, and sustainability. |
71 | |||
| 28 |
ALTRAD PLETTAC MEFRAN Échafaudagesaltradplettacmefran.fr
A leading provider in the construction and industrial sector, offering a wide range of scaffolding, safety equipment, and construction materials worldwide |
65 | |||
| 29 |
GEOSEC FRANCEgeosec.fr
Specializes in foundation soil consolidation using injection techniques combining research, technology, and innovation to ensure high-quality solutions. |
65 | |||
| 30 |
CHAPSOLchapsol.fr
Providing intelligent, sustainable solutions for civil engineering, public works, rail infrastructure, building, and agricultural structures with innovative, tailored approaches. |
64 | |||
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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 14, 2026.
More company lists in the Seine-et-Marne department
- The largest companies in the Seine-et-Marne department 946
- Multinational companies in the Seine-et-Marne department 139
- Manufacturers in the Seine-et-Marne department 100
- Hardware manufacturers in the Seine-et-Marne department 84
- Distributors and wholesalers in the Seine-et-Marne department 82
- Retail chains in the Seine-et-Marne department 68
- Construction companies in the Seine-et-Marne department 57
- Public sector organisations in the Seine-et-Marne department 49
- Family-owned companies in the Seine-et-Marne department 48
- Professional services firms in the Seine-et-Marne department 41
- Government Administration companies in the Seine-et-Marne department 39
- Industrial Machinery Manufacturing companies in the Seine-et-Marne department 34
- Wholesale companies in the Seine-et-Marne department 34
- Critical infrastructure operators in the Seine-et-Marne department 33
- Retail companies in the Seine-et-Marne department 33
- Education providers in the Seine-et-Marne department 31
- IT Services and IT Consulting companies in the Seine-et-Marne department 31
- IT services companies in the Seine-et-Marne department 29
- Contract manufacturers in the Seine-et-Marne department 26
- Healthcare providers in the Seine-et-Marne department 26
- Higher Education companies in the Seine-et-Marne department 25
The same list elsewhere in France
- Companies with in-house R&D in France 8,747
- Companies with in-house R&D in Île-de-France 2,695
- Companies with in-house R&D in Auvergne-Rhône-Alpes 1,459
- Companies with in-house R&D in Occitanie 680
- Companies with in-house R&D in Grand Est 639
- Companies with in-house R&D in Provence-Alpes-Côte d'Azur 612
- Companies with in-house R&D in Nouvelle-Aquitaine 566
- Companies with in-house R&D in the Hauts-de-Seine department 510
- Companies with in-house R&D in the Rhône department 509
- Companies with in-house R&D in Pays de la Loire 480
- Companies with in-house R&D in Hauts-de-France 410
- Companies with in-house R&D in Brittany 366
- Companies with in-house R&D in the Haute-Garonne department 323
- Companies with in-house R&D in the Bouches-du-Rhône department 320
- Companies with in-house R&D in the Isère department 304
- Companies with in-house R&D in Bourgogne-Franche-Comté 261
- Companies with in-house R&D in the Nord department 237
- Companies with in-house R&D in Normandy 227
- Companies with in-house R&D in the Gironde department 225
- Companies with in-house R&D in the Loire-Atlantique department 207
- Companies with in-house R&D in the Essonne department 198
- Companies with in-house R&D in Centre-Val de Loire 195
- Companies with in-house R&D in Paris 1,249
- Companies with in-house R&D in Lyon 192