# Top 30 multinational companies in the Isère department

Tamtam tracks 174 multinational companies headquartered in the Isère department. This list ranks the 30 largest by number of employees on LinkedIn, led by Tessi, ARaymond and Soitec. Their median headcount is 605. Half of them were founded in 1979 or later. The most common headquarters are Grenoble (10) and Saint-Quentin-Fallavier (2).

The Isère department is home to a diverse group of companies, with a notable presence of mid-sized and established firms. Key sectors include IT Services and Consulting, Manufacturing, and Semiconductor Manufacturing. For example, Tessi specializes in digitalizing customer relations and document processes, while ARaymond designs fastening systems for various industries. Soitec produces innovative semiconductor materials, and ALTRAD PREZIOSO offers technical engineering services for Oil, Gas, and Power Generation.

A recurring pattern is the concentration of headquarters in Grenoble, indicating its role as a regional economic hub. The companies listed span a wide range of founding years, from Vicat (1853) and ARaymond (1865) to more recent establishments like Soitec (1992) and ESRF - The European Synchrotron (1994), showcasing both historical industrial roots and newer technological developments.

🇫🇷 Isère · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Tessi](https://www.tamtam.ai/c/tessi) (tessi.eu)<br>Management of customer relations, payments, and document processes through digitalization and business process outsourcing solutions, ensuring information security for businesses. | IT Services and IT Consulting | 🇫🇷 Grenoble | 3,960 | 1971 |
| 2 | [ARaymond](https://www.tamtam.ai/c/araymond) (araymond.com)<br>Design and manufacture of sustainable fastening, fluid connection, and integration systems for automotive, energy, healthcare, agriculture, and construction industries worldwide through collaborative innovation. | Manufacturing | 🇫🇷 Grenoble | 2,155 | 1865 |
| 3 | [Soitec](https://www.tamtam.ai/c/soitec) (soitec.com)<br>A world leader in innovative semiconductor materials production for various electronics markets, striving for disruptive innovation with energy-efficient, competitive products | Semiconductor Manufacturing | 🇫🇷 Bernin | 1,935 | 1992 |
| 4 | [ALTRAD PREZIOSO](https://www.tamtam.ai/c/altrad-prezioso) (altradprezioso.com)<br>Provides multidisciplinary technical engineering services primarily for Oil, Gas, and Power Generation, assisting clients with asset life extension and cost optimization. | Construction | 🇫🇷 Chasse-sur-Rhône | 1,663 | 1957 |
| 5 | [Grenoble Ecole de Management](https://www.tamtam.ai/c/grenoble-ecole-de-management) (grenoble-em.com)<br>A leading business school offering a wide range of educational programs in French and English, focused on solving complex problems for business and society | Education Administration Programs | 🇫🇷 Grenoble | 1,595 | 1984 |
| 6 | [Vicat](https://www.tamtam.ai/c/vicat) (vicat.fr)<br>A family-owned company specializing in cement production and distribution, operating in 11 countries with over 7,040 employees worldwide | Wholesale Building Materials | 🇫🇷 L'Isle-d'Abeau | 1,261 | 1853 |
| 7 | [CEA-Leti](https://www.tamtam.ai/c/cea-leti) (leti-cea.com)<br>Development of micro- and nanotechnologies for smart, energy-efficient, and secure industrial applications including healthcare, energy, and digital sectors. | Semiconductor Manufacturing | 🇫🇷 Grenoble | 1,223 | 1967 |
| 8 | [HARDIS GROUP](https://www.tamtam.ai/c/hardis-group) (hardis-group.com)<br>consulting and IT services company, a Salesforce pure player, and vendor of the Reflex logistics software suite for retail and supply chain transformation. | IT Services and IT Consulting | 🇫🇷 Seyssinet-Pariset | 1,015 | 1984 |
| 9 | [Sames](https://www.tamtam.ai/c/sames) (sames.com)<br>Provides equipment and services for applying paints, adhesives, and sealants, including guns, pumps, and dosing machines, focusing on efficiency and sustainability. | Industrial Machinery Manufacturing | 🇫🇷 Meylan | 990 | 1925 |
| 10 | [Rossignol Group](https://www.tamtam.ai/c/rossignol-group) (grouperossignol.com)<br>Leading manufacturer of winter sports equipment, specializing in skis and ski boots, with a focus on diversification and growth. | Spectator Sports | 🇫🇷 Saint-Jean-de-Moirans | 880 | 1907 |
| 11 | [Samat](https://www.tamtam.ai/c/samat) (samat.com)<br>A family-owned European company specializing in transport and logistics of sensitive products across various sectors with a sustainable fleet | Truck Transportation | 🇫🇷 Vienne | 840 | 1979 |
| 12 | [LYNRED](https://www.tamtam.ai/c/lynred) (lynred.com)<br>Designs and manufactures high-quality infrared technologies for aerospace, defense, and commercial markets, including IR detectors for military and thermal imaging equipment. | Semiconductor Manufacturing | 🇫🇷 Veurey-Voroize | 749 | 1986 |
| 13 | [ESRF - The European Synchrotron](https://www.tamtam.ai/c/esrf-the-european-synchrotron) (esrf.fr)<br>International science facility providing advanced synchrotron radiation for research in biology, medicine, chemistry, physics, and environmental sciences. | Research Services | 🇫🇷 Grenoble | 672 | 1994 |
| 14 | [MTB](https://www.tamtam.ai/c/mtb) (mtb-recycling.fr)<br>Specializes in recycling complex waste, manufacturing recycling machines, and engineering turnkey plants for efficient industrial waste management and recovery. | Machinery Manufacturing | 🇫🇷 Saint-Chef | 653 | 1981 |
| 15 | [CORYS](https://www.tamtam.ai/c/corys) (corys.com)<br>A leading French simulation company providing training and engineering simulators globally for transportation, power, and process industries | Software Development | 🇫🇷 Grenoble | 605 | 1989 |
| 16 | [ILL - Institut Laue Langevin](https://www.tamtam.ai/c/ill-institut-laue-langevin) (ill.eu)<br>Provides scientists with high flux neutrons and instruments for fundamental research in physics, chemistry, biology, materials, and nuclear science. | Research Services | 🇫🇷 Grenoble | 476 | 1967 |
| 17 | [Serge Ferrari Group](https://www.tamtam.ai/c/serge-ferrari-group) (sergeferrari.com)<br>Designs and manufactures innovative composite fabrics for light architectural and exterior landscaping applications focused on durability, safety, design, comfort, and eco-responsibility | Textile Manufacturing | 🇫🇷 La Tour-du-Pin | 462 | 1974 |
| 18 | [KIS](https://www.tamtam.ai/c/kis) (kis.fr)<br>Provider of self-service photo booths and laundry machines, offering convenient, automated solutions for photography and laundry needs worldwide. | Retail Office Equipment | 🇫🇷 Échirolles | 384 |  |
| 19 | [Winoa](https://www.tamtam.ai/c/winoa) (winoa.com)<br>An international leader in steel abrasives, providing solutions for metal and stone industries worldwide, with a focus on quality, innovation, and customer satisfaction | Manufacturing | 🇫🇷 Le Cheylas | 341 | 1961 |
| 20 | [Korus Group](https://www.tamtam.ai/c/korus-group) (korusgroup.com)<br>Korus Group offers innovative consulting, design, build, furniture, and maintenance solutions to enhance work environments globally, focusing on performance and people | Design Services | 🇫🇷 La Murette | 331 | 1991 |
| 21 | [Condat SA](https://www.tamtam.ai/c/condat-sa) (condat.fr)<br>Formulates, produces wide range industrial lubricants; metal-forming, technical greases, hydraulic oils, cutting fluids, soaps, surface treatments. Focus on high-performance, responsible solutions. | Chemical Manufacturing | 🇫🇷 Chasse-sur-Rhône | 331 | 1854 |
| 22 | [MasterGrid](https://www.tamtam.ai/c/mastergrid) (mastergrid.com)<br>MasterGrid specializes in electrical system services from high to low voltage, providing tailored solutions to optimize system lifecycle and improve environmental impact | Electric Power Transmission, Control, and Distribution | 🇫🇷 Grenoble | 328 | 2019 |
| 23 | [ECM Technologies - Industrial Furnaces](https://www.tamtam.ai/c/ecm-technologies-industrial-furnaces) (ecm-furnaces.com)<br>Design and supply of vacuum, high-temperature, and thermochemical process machines and solutions for various industrial sectors worldwide. | Machinery Manufacturing | 🇫🇷 Grenoble | 326 | 1928 |
| 24 | [Telenco](https://www.tamtam.ai/c/telenco) (telenco.com)<br>Industrial group designing, manufacturing, and distributing equipment for telecoms and datacom networks through production sites, B2B e-commerce, engineering, and technician training services. | Telecommunications | 🇫🇷 Moirans | 317 | 1999 |
| 25 | [Waga Energy](https://www.tamtam.ai/c/waga-energy) (waga-energy.com)<br>This company converts landfill gas into Renewable Natural Gas (RNG) using patented technology, reducing CO2 emissions and supplying households with biomethane | Renewable Energy Power Generation | 🇫🇷 Eybens | 316 | 2015 |
| 26 | [OROS](https://www.tamtam.ai/c/oros) (oros.com)<br>Specializing in noise and vibration testing systems, this dynamic company offers high-tech instruments, software, and related services for various industries globally | Industrial Machinery Manufacturing | 🇫🇷 Montbonnot-Saint-Martin | 312 | 1985 |
| 27 | [Groupe Pierre Martinet](https://www.tamtam.ai/c/groupe-pierre-martinet) (martinet.fr)<br>Producer of fresh prepared salads combining authentic recipes, culinary innovation, environmental responsibility, and strong team spirit across Europe. | Food and Beverage Manufacturing | 🇫🇷 Saint-Quentin-Fallavier | 302 | 1968 |
| 28 | [Groupe BBL](https://www.tamtam.ai/c/groupe-bbl) (groupe-bbl.com)<br>A specialist federation offering logistics solutions in contract logistics, overseas transport, road transport, and customs & compliance services Growth from 440 to 2100 employees in 5 years | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Saint-Quentin-Fallavier | 292 | 1997 |
| 29 | [SPARTOO](https://www.tamtam.ai/c/spartoo) (spartoo.com)<br>Online retail platform offering extensive footwear and fashion products across Europe and China, with free delivery and returns service. | Technology, Information and Internet | 🇫🇷 Grenoble | 290 | 2006 |
| 30 | [Teisseire](https://www.tamtam.ai/c/teisseire) (teisseire.com)<br>Leading producer of organic syrups and fruit juices, specializing in non-alcoholic refreshing beverages with iconic consumer and food service brands. | Beverage Manufacturing | 🇫🇷 Crolles | 287 | 1720 |

## 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 Isère department

- [The largest companies in the Isère department](https://www.tamtam.ai/l/largest-companies-isere) (1,457)
- [Companies with in-house R&D in the Isère department](https://www.tamtam.ai/l/r-and-d-companies-isere) (304)
- [Manufacturers in the Isère department](https://www.tamtam.ai/l/manufacturers-isere) (178)
- [Hardware manufacturers in the Isère department](https://www.tamtam.ai/l/hardware-companies-isere) (143)
- [Retail chains in the Isère department](https://www.tamtam.ai/l/retail-chains-isere) (100)
- [Software Development companies in the Isère department](https://www.tamtam.ai/l/software-development-companies-isere) (90)
- [Professional services firms in the Isère department](https://www.tamtam.ai/l/professional-services-firms-isere) (87)
- [Public sector organisations in the Isère department](https://www.tamtam.ai/l/public-sector-organisations-isere) (80)
- [Distributors and wholesalers in the Isère department](https://www.tamtam.ai/l/distributors-and-wholesalers-isere) (78)
- [IT services companies in the Isère department](https://www.tamtam.ai/l/it-services-companies-isere) (75)
- [SaaS companies in the Isère department](https://www.tamtam.ai/l/saas-companies-isere) (72)
- [Electronics and semiconductor companies in the Isère department](https://www.tamtam.ai/l/electronics-companies-isere) (70)
- [Contract manufacturers in the Isère department](https://www.tamtam.ai/l/contract-manufacturers-isere) (68)
- [IT Services and IT Consulting companies in the Isère department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-isere) (68)
- [Family-owned companies in the Isère department](https://www.tamtam.ai/l/family-owned-companies-isere) (61)
- [Industrial Machinery Manufacturing companies in the Isère department](https://www.tamtam.ai/l/industrial-machinery-manufacturing-companies-isere) (58)
- [Consulting firms in the Isère department](https://www.tamtam.ai/l/consulting-firms-isere) (57)
- [Construction companies in the Isère department](https://www.tamtam.ai/l/construction-companies-isere) (52)
- [Pharmaceutical companies in the Isère department](https://www.tamtam.ai/l/pharmaceutical-companies-isere) (47)
- [Education providers in the Isère department](https://www.tamtam.ai/l/education-companies-isere) (46)
- [Medical device companies in the Isère department](https://www.tamtam.ai/l/medical-device-companies-isere) (43)
- [Critical infrastructure operators in the Isère department](https://www.tamtam.ai/l/critical-infrastructure-operators-isere) (41)
- [Energy companies in the Isère department](https://www.tamtam.ai/l/energy-companies-isere) (41)
- [Chemical companies in the Isère department](https://www.tamtam.ai/l/chemical-companies-isere) (40)

## The same list elsewhere in France

- [Multinational companies in France](https://www.tamtam.ai/l/multinational-companies-france) (11,864)
- [Multinational companies in Île-de-France](https://www.tamtam.ai/l/multinational-companies-ile-de-france) (6,028)
- [Multinational companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/multinational-companies-auvergne-rhone-alpes) (1,318)
- [Multinational companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/multinational-companies-hauts-de-seine) (1,231)
- [Multinational companies in Grand Est](https://www.tamtam.ai/l/multinational-companies-grand-est) (787)
- [Multinational companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/multinational-companies-provence-alpes-cote-dazur) (638)
- [Multinational companies in the Rhône department](https://www.tamtam.ai/l/multinational-companies-rhone) (577)
- [Multinational companies in Occitanie](https://www.tamtam.ai/l/multinational-companies-occitanie) (532)
- [Multinational companies in Hauts-de-France](https://www.tamtam.ai/l/multinational-companies-hauts-de-france) (511)
- [Multinational companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/multinational-companies-nouvelle-aquitaine) (450)
- [Multinational companies in Pays de la Loire](https://www.tamtam.ai/l/multinational-companies-pays-de-la-loire) (390)
- [Multinational companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/multinational-companies-bouches-du-rhone) (351)
- [Multinational companies in the Nord department](https://www.tamtam.ai/l/multinational-companies-nord) (332)
- [Multinational companies in Brittany](https://www.tamtam.ai/l/multinational-companies-brittany) (264)
- [Multinational companies in the Haute-Garonne department](https://www.tamtam.ai/l/multinational-companies-haute-garonne) (246)
- [Multinational companies in the Yvelines department](https://www.tamtam.ai/l/multinational-companies-yvelines) (226)
- [Multinational companies in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/multinational-companies-bourgogne-franche-comte) (220)
- [Multinational companies in Normandy](https://www.tamtam.ai/l/multinational-companies-normandy) (216)
- [Multinational companies in the Gironde department](https://www.tamtam.ai/l/multinational-companies-gironde) (200)
- [Multinational companies in the Val-de-Marne department](https://www.tamtam.ai/l/multinational-companies-val-de-marne) (200)
- [Multinational companies in the Seine-Saint-Denis department](https://www.tamtam.ai/l/multinational-companies-seine-saint-denis) (198)
- [Multinational companies in Paris](https://www.tamtam.ai/l/multinational-companies-paris) (3,531)
- [Multinational companies in Lyon](https://www.tamtam.ai/l/multinational-companies-lyon) (283)
- [Multinational companies in Boulogne-Billancourt](https://www.tamtam.ai/l/multinational-companies-boulogne-billancourt) (188)

---

Source: https://www.tamtam.ai/l/multinational-companies-isere