# 30 leading aerospace and defence companies in the Val-d'Oise department
Tamtam tracks 31 aerospace and defence companies headquartered in the Val-d'Oise department. This list ranks the 30 largest by number of employees on LinkedIn, led by Eviden, UUDS AERO and POMMIER. Their median headcount is 40. Half of them were founded in 1981 or later. The most common headquarters are Argenteuil (4), Roissy-en-France (4) and Bezons (3).
The aerospace and defence companies in Val-d'Oise are a mix of mid-sized firms and younger companies. They specialize in manufacturing components, providing IT services, and offering pilot training. Eviden, with over 10,000 employees, is a digital transformation leader. UUDS AERO manufactures aviation components, while Laroche Group offers complex machining and aerostructures assembly. Simaero provides global pilot training, and AERTEC Group offers technical support and cabin interior customization.
A notable cluster of these companies, such as UUDS AERO, Simaero, Time to Fly, and Otokar Europe, are headquartered in Roissy-en-France, indicating a concentration of aviation-related activities in that specific location within the department. Many of the companies were founded in the 1980s and 1990s, suggesting a period of growth and establishment for the sector in the region.
馃嚝馃嚪 Val-d'Oise 路 30 companies 路 Updated Nov 13, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Eviden](https://www.tamtam.ai/c/eviden) (eviden.com)
Eviden is a global leader in digital transformation, offering expertise in digital, cloud, data, advanced computing, and security solutions to industries worldwide | IT Services and IT Consulting | 馃嚝馃嚪 Bezons | 10,793 | |
| 2 | [UUDS AERO](https://www.tamtam.ai/c/uuds-aero) (uuds.com)
Cosmetics manufacturer, SPA management, and distributor of skincare, anti-aging, slimming, men's, and makeup lines under private labels. | Aviation and Aerospace Component Manufacturing | 馃嚝馃嚪 Roissy-en-France | 860 | 1981 |
| 3 | [POMMIER](https://www.tamtam.ai/c/pommier) (pommier.eu)
A leading specialist in industrial vehicle bodywork equipment, offering a wide range of products designed and manufactured in-house since 1945 | Motor Vehicle Parts Manufacturing | 馃嚝馃嚪 Beauchamp | 250 | 1945 |
| 4 | [Laroche Group](https://www.tamtam.ai/c/laroche-group) (laroche-group.com)
Offers complex machining, production engineering, and aerostructures assembly, supporting European industry leaders in major projects across aeronautics, space, automotive, telecoms, and rail. | Aviation and Aerospace Component Manufacturing | 馃嚝馃嚪 Andilly | 240 | 1999 |
| 5 | [Simaero](https://www.tamtam.ai/c/simaero) (sim.aero)
Global provider of pilot training on full-flight simulators and simulation engineering solutions for international airlines and pilots. | Airlines and Aviation | 馃嚝馃嚪 Roissy-en-France | 199 | 2002 |
| 6 | [AERTEC Group](https://www.tamtam.ai/c/aertec-group) (groupe-aertec.com)
Technical support, aeronautical painting, cabin interiors customization, build-to-print products, R&D projects, and turnkey aviation solutions with certifications. | Aviation and Aerospace Component Manufacturing | 馃嚝馃嚪 Villeron | 101 | 1995 |
| 7 | [PROTEC GROUPE](https://www.tamtam.ai/c/protec-groupe) (protec-groupe.com)
Specialized industrial surface treatments and finishing for aerospace, defense, space, rail, energy, and luxury sectors with innovation and quality focus. | Metal Treatments | 馃嚝馃嚪 Bezons | 86 | 1954 |
| 8 | [ELNO](https://www.tamtam.ai/c/elno) (elno.fr)
Designs and manufactures communication systems including intercoms, audio equipment, and safety solutions for defense, transport, and aeronautics sectors. | Defense and Space Manufacturing | 馃嚝馃嚪 Argenteuil | 81 | 1927 |
| 9 | [NIMROD Industries](https://www.tamtam.ai/c/nimrod-industries) (nimrod-group.com)
With over 40 years of experience in the aerospace industry, the company specializes in providing innovative, high value-added products and services to aviation leaders | Aviation and Aerospace Component Manufacturing | 馃嚝馃嚪 Taverny | 69 | 1981 |
| 10 | [Nimrod Technologies](https://www.tamtam.ai/c/nimrod-technologies) (nimrod-group.com)
Manufacture of sheet metal parts and sub-assemblies for aerospace, defense, automotive industries with advanced processes and quality certifications. | Aviation and Aerospace Component Manufacturing | 馃嚝馃嚪 Taverny | 55 | 1985 |
| 11 | [Time to Fly](https://www.tamtam.ai/c/time-to-fly) (timetofly.eu)
Consulting company specializing in aeronautics founded by an experienced airline manager Services include aviation operation, engineering, maintenance, safety, and airport consulting worldwide | Airlines and Aviation | 馃嚝馃嚪 Roissy-en-France | 53 | 2009 |
| 12 | [Otokar Europe](https://www.tamtam.ai/c/otokar-europe) (otokareurope.com)
European distribution branch for Turkish automotive manufacturer specializing in commercial and military vehicle solutions with extensive production facilities. | Motor Vehicle Manufacturing | 馃嚝馃嚪 Roissy-en-France | 53 | 2011 |
| 13 | [digital.security](https://www.tamtam.ai/c/digital-security) (eviden.com)
Offers advanced audit, consulting, and an IoT CERT for companies and governments. Specializes in integration, operational security, and SOC/SIEM management. | Computer and Network Security | 馃嚝馃嚪 Bezons | 52 | 2015 |
| 14 | [RENK France](https://www.tamtam.ai/c/renk-france) (renk.com)
Design and manufacture of transmissions and powerpacks for medium and heavy armoured military vehicles, wheeled or tracked. | Defense and Space Manufacturing | 馃嚝馃嚪 Saint-Ouen-l'Aum么ne | 44 | 1980 |
| 15 | [IMF](https://www.tamtam.ai/c/imf) (imf-fluid.com)
High-pressure system specialist providing tailored technological solutions and pressure control expertise for global aerospace, defense, nuclear, and industrial gas sector applications. | Industrial Machinery Manufacturing | 馃嚝馃嚪 Andilly | 40 | 1964 |
| 16 | [ETNA Industrie](https://www.tamtam.ai/c/etna-industrie) (etna-industrie.fr)
Manufacturer of hydraulic and pneumatic equipment and components with expertise in energy transport, aerospace, nuclear, cryogenics, and offshore industries. | Industrial Machinery Manufacturing | 馃嚝馃嚪 Argenteuil | 38 | 1942 |
| 17 | [UAC CEFIVAL](https://www.tamtam.ai/c/uac-cefival) (cefival.fr)
Manufactures special sections and tubes through hot extrusion, creating near net shape profiles tailored to customer requirements across various industries. | Mining | 馃嚝馃嚪 Persan | 36 | 1947 |
| 18 | [ATELIERS LAUMONIER](https://www.tamtam.ai/c/ateliers-laumonier) (laumonier.fr)
Designs, industrializes, and manufactures technical parts, mechatronic sub-assemblies, and innovative technological products for SMEs, mid-caps, and large groups. | Mechanical Or Industrial Engineering | 馃嚝馃嚪 Nesles-la-Vall茅e | 34 | 1923 |
| 19 | [CIMULEC GROUPE](https://www.tamtam.ai/c/cimulec-groupe) (cimulecgroup.com)
A leading European provider of high-reliability PCBs for space, aerospace, and military applications, offering services from prototypes to series production | Appliances, Electrical, and Electronics Manufacturing | 馃嚝馃嚪 Ennery | 28 | 1979 |
| 20 | [M2M FACTORY](https://www.tamtam.ai/c/m2m-factory) (m2mfactory.fr)
Development and integration of tactical solutions involving audio, video, transmission, and image analysis for security forces and investigation services across multiple countries. | Security and Investigations | 馃嚝馃嚪 Vigny | 24 | 2006 |
| 21 | [LERITY](https://www.tamtam.ai/c/lerity) (lerity-alcen.com)
Design and manufacture of advanced long-range active imaging cameras and vision systems for defense, security, aerospace, and energy industries worldwide. | Defense and Space Manufacturing | 馃嚝馃嚪 Cergy | 22 | 1988 |
| 22 | [Cimulec](https://www.tamtam.ai/c/cimulec) (cimulecgroup.com)
Manufacturing electrical and electronic components and products, providing industrial solutions based in Ennery, Germany. | Appliances, Electrical, and Electronics Manufacturing | 馃嚝馃嚪 Ennery | 20 | |
| 23 | [NovaKamp](https://www.tamtam.ai/c/novakamp) (novakamp.fr)
This company specializes in eco-friendly habitat kits, thermal energy optimization, waste recovery, infrastructure networks, power generation, engineering, and camp intelligence/data management for energy efficiency and sustainability | Industrial Machinery Manufacturing | 馃嚝馃嚪 Domont | 15 | 2021 |
| 24 | [CLAIR GROUP](https://www.tamtam.ai/c/clair-group) (clair-group.com)
Specializes in pilot training, aircraft maintenance, air transport, and airport services, providing comprehensive aeronautical solutions. | Aviation and Aerospace Component Manufacturing | 馃嚝馃嚪 Bonneuil-En-France | 14 | |
| 25 | [PROMOFILTRES](https://www.tamtam.ai/c/promofiltres) (promofiltres.com)
A leading French industrial filtration manufacturer specializing in custom metal filters since 1970, offering a wide range of products and services with a focus on quality and expertise | Fabricated Metal Products | 馃嚝馃嚪 Domont | 12 | 1970 |
| 26 | [Traitement de Surface et M茅canique (TSM)](https://www.tamtam.ai/c/traitement-de-surface-et-mecanique-tsm) (tsm-sa.com)
Specializes in surface treatment and precision machining of client parts, serving aerospace, military, industrial hydraulics, and nuclear sectors with certifications. | Metal Treatments | 馃嚝馃嚪 Seraincourt | 10 | 1972 |
| 27 | [SAFIM 95](https://www.tamtam.ai/c/safim-95) (safim95.com)
Specialist in machining metallurgical test specimens, prototyping, precise mechanical parts for various industries, equipped with machines for milling, turning, assembly ISO 9001 and EN9100 certified | Industrial Machinery Manufacturing | 馃嚝馃嚪 Argenteuil | 8 | |
| 28 | [ALLIANCE OUTILLAGE](https://www.tamtam.ai/c/alliance-outillage) (alliance-outillage.fr)
Specialized small business in precision mechanics, prototype part design and production, machining assembly services for aerospace, automotive, nuclear, and cosmetic industries ISO 9001 certified | Industrial Machinery Manufacturing | 馃嚝馃嚪 Ennery | 5 | 2009 |
| 29 | [SFMS AERODIM](https://www.tamtam.ai/c/sfms-aerodim) (sfms-aerodim.com)
SFMS-AERODIM provides industrial production solutions, specializing in turning, milling, and precision machining for the aerospace, defense, transport, and other industries for nearly 50 years | Industrial Machinery Manufacturing | 馃嚝馃嚪 Ennery | 5 | 1960 |
| 30 | [MTM-STT](https://www.tamtam.ai/c/mtm-stt) (mtm-stt.fr)
Company specializes in precision machining of parts, from prototype to small series, for demanding sectors like aeronautics and space, using various materials. | Industrial Machinery Manufacturing | 馃嚝馃嚪 Argenteuil | 4 | |
## 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 13, 2026.
## More company lists in the Val-d'Oise department
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- [Companies with in-house R&D in the Val-d'Oise department](https://www.tamtam.ai/l/r-and-d-companies-val-doise) (88)
- [Manufacturers in the Val-d'Oise department](https://www.tamtam.ai/l/manufacturers-val-doise) (85)
- [Hardware manufacturers in the Val-d'Oise department](https://www.tamtam.ai/l/hardware-companies-val-doise) (70)
- [Distributors and wholesalers in the Val-d'Oise department](https://www.tamtam.ai/l/distributors-and-wholesalers-val-doise) (67)
- [Retail chains in the Val-d'Oise department](https://www.tamtam.ai/l/retail-chains-val-doise) (56)
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- [Family-owned companies in the Val-d'Oise department](https://www.tamtam.ai/l/family-owned-companies-val-doise) (42)
- [IT services companies in the Val-d'Oise department](https://www.tamtam.ai/l/it-services-companies-val-doise) (42)
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- [Healthcare providers in the Val-d'Oise department](https://www.tamtam.ai/l/healthcare-providers-val-doise) (27)
- [Industrial Machinery Manufacturing companies in the Val-d'Oise department](https://www.tamtam.ai/l/industrial-machinery-manufacturing-companies-val-doise) (27)
- [Government Administration companies in the Val-d'Oise department](https://www.tamtam.ai/l/government-administration-companies-val-doise) (26)
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## The same list elsewhere in France
- [Aerospace and defence companies in France](https://www.tamtam.ai/l/aerospace-and-defense-companies-france) (1,572)
- [Aerospace and defence companies in 脦le-de-France](https://www.tamtam.ai/l/aerospace-and-defense-companies-ile-de-france) (409)
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## The same list elsewhere
- [Aerospace and defence companies in the world](https://www.tamtam.ai/l/aerospace-and-defense-companies-in-the-world) (6,083)
- [Aerospace and defence companies in Europe](https://www.tamtam.ai/l/aerospace-and-defense-companies-in-europe) (3,287)
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Source: https://www.tamtam.ai/l/aerospace-and-defense-companies-val-doise