This selection of companies with in-house R&D in Charente-Maritime highlights a mix of well-established firms and younger enterprises. The clear emphasis is on manufacturing and higher education, with a strong presence of the shipbuilding and aviation sectors. Companies like STELIA Aerospace, founded in 2015, design and manufacture aircraft cabin interiors, while Fountaine Pajot, established in 1976, builds sailing catamarans and motor yachts. La Rochelle Université and Excelia are key players in higher education.
A notable pattern is the concentration of shipbuilding expertise, with companies such as Dufour and AMEL Yachts, both founded in 1964, specializing in sailing yacht design and construction. There is also a cluster of aviation and aerospace component manufacturers, including Elixir Aircraft, which produces light aircraft. Many of these companies are headquartered in La Rochelle or its surrounding towns like Périgny and Rochefort.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
STELIA Aerospacestelia-aerospace.com
Design and manufacture of premium aircraft cabin interiors, specializing in high-quality passenger seats with a distinctive French design touch. |
1,881 | |||
| 2 |
La Rochelle Universitéuniv-larochelle.fr
Higher education institution offering personalized learning, active research involvement, and strong partnerships with businesses for innovation and development. |
1,213 | |||
| 3 |
Exceliaexcelia-group.com
Leading higher education group with five schools: business, tourism, digital, academy, and executive education programs. |
1,122 | |||
| 4 |
Fountaine Pajotfountaine-pajot.com
Design and construction of high-performance, seaworthy, innovative, and comfortable sailing catamarans and motor yachts for enthusiasts. |
355 | |||
| 5 |
Dufourdufour-yachts.com
Design and manufacture of exclusive sailing yachts with customer-focused approach, offering a range of models for yachting enthusiasts worldwide. |
246 | |||
| 6 |
INNOV'IAinnov-ia.com
Manufacturing various powdered forms of functional ingredients, offering custom solutions in low-temperature spray drying, granulation, micro-encapsulation, prilling, and coating for preservation and property optimization. |
192 | |||
| 7 | 192 | ||||
| 8 |
AMEL Yachtsamel.fr
Design and build handcrafted offshore sailing yachts combining craftsmanship, technical innovation, and a passion for safe, elegant, sustainable voyages. |
145 | |||
| 9 |
Elixir Aircraftelixir-aircraft.com
Designs and produces the best certified 2-seater light aircraft for training, travel, and leisure purposes, shaping the future of general aviation. |
125 | |||
| 10 |
Systel-SAsystel-sa.fr
A company specializing in warning processing and transmission network management, with a focus on continuous improvement, innovation, and strong relationships with users |
109 | |||
| 11 |
Shark Roboticsshark-robotics.com
Designs and manufactures ground robots for hostile environments, protecting first responders and armed forces in critical situations. Deploys robust, mobile systems. |
80 | |||
| 12 |
Xtrem Santésoftwaymedical.fr
A software company developing the OX Mediboard Hospital Information System, used in over 50 healthcare centers for high-quality electronic patient files |
74 | |||
| 13 |
NAUTITECH Catamaransnautitechcatamarans.com
French company manufacturing 80 catamarans annually, with 250 employees. Exports 80% globally through 50 resellers. |
73 | |||
| 14 |
CAVOK SARL
An aircraft maintenance workshop based in Lapalisse, France, specializing in modifying and integrating embedded systems components for all aircraft categories |
70 | |||
| 15 |
Valbiotisvalbiotis.com
A research & development company focused on innovation in health nutrition products to prevent metabolic and cardiovascular diseases using plant-based resources |
63 | |||
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 |
Selenium Medicalselenium-medical.com
Specialized technical consultancy in clean room injection, surface treatment, and sterile packaging for medical devices, focused on innovation and customer satisfaction. |
59 | |||
| 17 |
Imecaimeca-reel.com
Design and supply of lifting, handling, and integrated systems for offshore energy production and bulk handling infrastructure projects. |
56 | |||
| 18 |
ImaginAirimaginair.eu
Design, manufacture, and support aircraft cabin equipment for manufacturers, airlines, lessors, and maintenance companies, specializing in modular composite solutions. |
54 | |||
| 19 |
Laboratoire LESCUYERlaboratoire-lescuyer.com
Formulation and supply of natural micronutrition supplements including vitamins, minerals, probiotics, essential fatty acids, and plant extracts for health professionals. |
50 | |||
| 20 |
CAMPUS DE L'ALIMENTATION ENILIA ENSMICcampus-alimentation.fr
ENILIA-ENSMIC offers 200 years of experience in training and research in the food industry, providing specialized programs, technical equipment, and research facilities |
48 | |||
| 21 |
INCIDENCE SAILSincidence-sails.com
Design and manufacture custom sails for various boats including racing yachts, cruisers, superyachts, and cargo sail ships with innovative materials. |
48 | |||
| 22 |
NEEL-TRIMARANS GROUPneel-trimarans.com
Design and build cruising trimarans in La Rochelle with a team of 120 skilled, experienced, and efficient employees. |
47 | |||
| 23 |
LIS France SASlis.eu
The company provides proven TMS solutions for transport and logistics companies, offering automated planning and streamlined operations to help businesses succeed |
46 | |||
| 24 |
Raccourci (Groupe Yoni)raccourci.fr
Develops digital ecosystems and innovative tools enhancing tourist experience, marketing, e-reputation, and digital transformation for over 500 destinations. |
44 | |||
| 25 |
Tonnellerie Radouxradoux.fr
Specializes in premium oak barrels and vats, combining traditional craftsmanship with advanced wood selection and precise toasting techniques. |
43 | |||
| 26 |
Soöruz Surfwearsurfwear.sooruz.com
Design and manufacture of sustainable, high-performance surfwear and accessories tailored for various water sports and rider needs. |
39 | |||
| 27 |
FIB Belgium S.A.fib-group.com
A Brussels based company founded in 1936 specializing in designing industrial furnaces for the steel wire industry, as well as supplying heating equipment to various other sectors globally |
39 | |||
| 28 |
Aquarium La Rochelleaquarium-larochelle.com
Large European aquarium hosting 800,000 visitors annually, offering marine life education, scientific research, species reproduction, and biodiversity conservation. |
37 | |||
| 29 |
EDEN PROMOTIONbit.ly
Develops and builds sustainable, low-carbon real estate projects, integrating bio-sourced materials, energy self-consumption, and innovative housing solutions for accessible, community-focused living. |
34 | |||
| 30 |
Tipeeplateforme-tipee.com
Tipee is a center of expertise specializing in sustainable building, providing solutions for all stakeholders in the construction industry with a focus on innovation and environmental responsibility |
34 | |||
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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 Charente-Maritime department
- The largest companies in the Charente-Maritime department 444
- Retail chains in the Charente-Maritime department 57
- Manufacturers in the Charente-Maritime department 39
- Multinational companies in the Charente-Maritime department 36
- Public sector organisations in the Charente-Maritime department 33
- Professional services firms in the Charente-Maritime department 26
The same list elsewhere in France
- Companies with in-house R&D in France 8,750
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- 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