The Vendée department is home to a diverse group of companies engaged in in-house research and development. These firms span several key sectors, including industrial machinery, food and beverage manufacturing, construction, and shipbuilding. Most are mid-sized to large organizations, with a strong presence of long-established businesses.
Notable examples include Groupe Atlantic, a large manufacturer of heating and cooling solutions, and Maître CoQ, a major poultry brand. Construction is represented by companies like Cougnaud, specializing in modular building, and Groupe BRIAND, focused on metal, wood, and concrete structures. Sepro Group is a key player in automation machinery, while BENETEAU is a global leader in yacht building. Many of these companies, such as Portail SIB, TRONICO, and Sepro Group, were founded around the early 1970s, indicating a period of significant industrial development in the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Groupe Atlanticgroupe-atlantic.fr
Designing, manufacturing, and marketing heating, air conditioning, ventilation, and domestic hot water solutions. Innovating for durable, efficient, connected equipment and well-being. |
4,667 | |||
| 2 |
Maître CoQmaitrecoq.fr
A major European poultry brand offering a wide selection of high-quality chicken, turkey, and guinea fowl products, focusing on sustainable farming practices |
843 | |||
| 3 |
Portail SIBsib-europe.com
Design, production, and distribution of custom aluminum gates, fences, shutters, garage doors, and automation solutions for professional installers. |
669 | |||
| 4 |
Cougnaudcougnaud.com
Industrialized modular construction and rental solutions for professional, educational, healthcare, and event spaces, both permanent and temporary, nationwide. |
654 | |||
| 5 |
BENETEAUbeneteau.com
A global leader in building sailing yachts and motorboats, offering innovative and elegant designs to fulfill everyone's sailing dreams worldwide |
648 | |||
| 6 |
Groupe BRIANDbriand.fr
A French construction company specializing in metal, wood, and concrete building construction, with expertise in roofing, cladding, and structural work for various types of buildings |
611 | |||
| 7 |
Sepro Groupsepro-group.com
Leading independent manufacturer of Cartesian robots for automating injection molding machines globally, equipping new or existing machines of all sizes and brands. |
490 | |||
| 8 |
TRONICOtronico-agon.com
Design, integrate electronic systems for high added-value equipment across its lifecycle. Also develops complex electronically-dominant systems as an Original Design Manufacturer. |
395 | |||
| 9 |
COGELECcogelec.fr
Manufacturer of wireless access control systems with remote management for multi-residential and social housing markets, leading in France. |
344 | |||
| 10 |
Jeanneaujeanneau.com
Builds sail and power boats since 1957. Expertise, quality, and customer input drive innovation in creating boats of extraordinary value and timeless beauty. |
263 | |||
| 11 |
OCEA Construction navaleocea.fr
Designs, builds, markets, and supports aluminum vessels up to 90m for maritime safety, yachts, territory administration, transport, and aluminum industrial elements. |
208 | |||
| 12 |
OUEST ALU (Groupe LIEBOT)ouestalu.fr
Specializes in innovative facade design and construction, emphasizing quality, sustainability, employee training, and strong client partnerships. |
202 | |||
| 13 |
MECAPACK Francemecapack.fr
Global leader in industrial packaging solutions, specializing in HFFS thermoforming machines, tray sealers, and complete packaging lines for diverse markets. |
179 | |||
| 14 |
Hydrokithydrokit.com
Designs, sells electro-hydraulic kits and equipment for agriculture, public works, heavy goods vehicles, forestry, industry, marine, handling, military, nuclear, and port sectors. |
172 | |||
| 15 |
ARTHUR BONNETarthur-bonnet.com
manufacturer of exclusive French kitchens combining elegant design, functionality, ergonomics, and innovation with a convivial shopping experience |
172 | |||
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 |
PROCESS THERMOPLASTICprocess.fr
Company specializes in transforming plastic and composite parts, offering comprehensive, customized services from design and prototyping to production, assembly, and logistics solutions. |
164 | |||
| 17 |
SADEV Racing Transmissionsadev-tm.com
Design and manufacture of high-performance, reliable, and safe transmissions specifically for motorsport applications, supporting drivers and manufacturers worldwide. |
149 | |||
| 18 |
GROUPE HUGUETgroupe-huguet.fr
Designs and builds custom machines, integrating industrial robots, manages electrical installations including photovoltaic and EV charging, and provides industrial maintenance services. |
130 | |||
| 19 |
Atlantic Franceatlantic-pros.fr
Designs and manufactures eco-friendly multi-energy thermal comfort solutions. Offers tailored services and training for professionals in individual, collective, and public buildings. |
112 | |||
| 20 | 77 | ||||
| 21 |
HORANEThoranet.com
Horanet specializes in digital solutions for managing equipment in local communities, focusing on environment, sports, access control, and user relations Operating in Vendée and La Rochelle |
75 | |||
| 22 |
Simpson Strong-Tie Francesimpson.fr
Design and manufacture a wide range of connectors and fasteners for assembling wooden frameworks and timber constructions. |
60 | |||
| 23 | 59 | ||||
| 24 | 59 | ||||
| 25 |
ARCANEarcanefrance.fr
A French company founded in 1994, specializing in designing and manufacturing modular aluminum structures for workstations, enclosures, conveyors, and assembly lines |
48 | |||
| 26 |
Cocktail Visioncocktailvision.fr
Design and manufacture of indoor and outdoor LED screens and panels for dynamic advertising and eco-friendly communication solutions. |
46 | |||
| 27 |
STRAPHARMnaturacare.com
A French specialist in developing and manufacturing natural health products, offering a wide range of food supplements and cosmetics in dry forms |
45 | |||
| 28 |
TECAUMAtecauma.fr
Specializing in designing, manufacturing, and installing automated production lines and handling equipment for various industries, focusing on industrial woodworking, ceramics, and metallurgy |
44 | |||
| 29 |
COUGNAUD SAS (LAPEYRE)recrutement-lapeyre.fr
Specializing in sustainable home equipment and furnishings for consumers and professionals, offering innovative products in multiple categories with a focus on quality and eco-responsibility |
43 | |||
| 30 | 42 | ||||
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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.
More company lists in the Vendée department
- The largest companies in the Vendée department 478
- Manufacturers in the Vendée department 90
- Retail chains in the Vendée department 72
- Family-owned companies in the Vendée department 53
- Multinational companies in the Vendée department 46
- Contract manufacturers in the Vendée department 40
- Hardware manufacturers in the Vendée department 38
- Construction companies in the Vendée department 30
- Distributors and wholesalers in the Vendée department 26
- Food and Beverage Manufacturing companies in the Vendée department 25
The same list elsewhere in France
- Companies with in-house R&D in France 8,750
- Companies with in-house R&D in Île-de-France 2,695
- Companies with in-house R&D in Auvergne-Rhône-Alpes 1,460
- Companies with in-house R&D in Occitanie 680
- Companies with in-house R&D in Grand Est 640
- Companies with in-house R&D in Provence-Alpes-Côte d'Azur 613
- 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 321
- 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