# Top 100 Engineering Services companies in France

Tamtam tracks 301 Engineering Services companies headquartered in France. This list ranks the 100 largest by number of employees on LinkedIn, led by Capgemini Engineering, ALTEN and Technip Energies. Their median headcount is 205. Half of them were founded in 2000 or later. The most common headquarters are Paris (21), Lyon (4) and Montrouge (3).

These French engineering services companies are mostly large firms, with a focus on industrial and infrastructure projects. Capgemini Engineering offers R&D services for intelligent industry, while ALTEN provides engineering and IT services for technological transformation. Technip Energies specializes in energy engineering, including LNG and hydrogen, and SYSTRA focuses on public transport and mobility solutions. SEGULA Technologies offers global engineering across industrial sectors, and Ingérop is an independent engineering company with expertise in infrastructure and energy.

The headquarters are primarily concentrated in the Paris region, with several companies like Capgemini Engineering, Technip Energies, SYSTRA, and Abylsen based in Paris itself or nearby suburbs like Boulogne-Billancourt, Nanterre, Montrouge, Rueil-Malmaison, Velizy-Villacoublay, Cachan, Bois-Colombes, and Saint-Rémy-lès-Chevreuse. Lyon and Senlis are also represented.

🇫🇷 France · 100 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Capgemini Engineering](https://www.tamtam.ai/c/capgemini-engineering) (capgemini.com)<br>Engineering R&D services, combining broad industry knowledge and cutting-edge digital and software technologies to accelerate clients' journey towards Intelligent Industry. | Engineering Services | 🇫🇷 Paris | 44,836 |  |
| 2 | [ALTEN](https://www.tamtam.ai/c/alten) (alten.com)<br>Provides engineering and IT services, supporting businesses in technological and sustainable transformation across various industries with high-level consultant-engineers. | Engineering Services | 🇫🇷 Boulogne-Billancourt | 38,710 | 1988 |
| 3 | [Technip Energies](https://www.tamtam.ai/c/technip-energies) (ten.com)<br>Leading energy engineering & technology company focused on LNG, hydrogen, ethylene, sustainable chemistry, and CO2 management Committed to accelerating the energy transition globally | Engineering Services | 🇫🇷 Paris | 18,645 |  |
| 4 | [SEGULA Technologies](https://www.tamtam.ai/c/segula-technologies) (segulatechnologies.com)<br>Provides global engineering services across major industrial sectors, committed to innovation, from research to industrialization and production. | Engineering Services | 🇫🇷 Nanterre | 11,442 |  |
| 5 | [SYSTRA](https://www.tamtam.ai/c/systra) (systra.com)<br>Leading engineering and consultancy group specializing in public transport and mobility solutions, connecting people and regions through transport infrastructure development. | Engineering Services | 🇫🇷 Paris | 10,162 |  |
| 6 | [Ingérop](https://www.tamtam.ai/c/ingerop) (ingerop.fr)<br>An independent engineering company with expertise in infrastructure, transportation, water, environment, energy, and industrial facilities in over 70 countries | Engineering Services | 🇫🇷 Rueil-Malmaison | 2,268 | 1992 |
| 7 | [Abylsen](https://www.tamtam.ai/c/abylsen) (abylsen.com)<br>A company that values collective intelligence and encourages exploring new possibilities to create infinite value in various directions | Engineering Services | 🇫🇷 Paris | 2,163 | 2005 |
| 8 | [Edvance](https://www.tamtam.ai/c/edvance) (edvance.fr)<br>Designs and implements nuclear islands and control commands for nuclear reactors under construction, domestically and internationally. | Engineering Services | 🇫🇷 Montrouge | 1,943 | 2017 |
| 9 | [EKIUM](https://www.tamtam.ai/c/ekium) (ekium.eu)<br>Specializing in industrial and building engineering, automation, and partner to various industries, we offer opportunities in national and international offices | Engineering Services | 🇫🇷 Lyon | 1,877 | 1990 |
| 10 | [LGM](https://www.tamtam.ai/c/lgm-velizy-villacoublay) (lgm.group)<br>The company offers technological, digital, and software engineering consulting, innovative solution design, and complex electronics production, supporting critical systems and industrial performance. | Engineering Services | 🇫🇷 Velizy-Villacoublay | 1,469 | 1991 |
| 11 | [Cetim - Centre technique des industries mécaniques](https://www.tamtam.ai/c/cetim-centre-technique-des-industries-mecaniques) (cetim.fr)<br>Providing consulting, engineering, and R&D services to manufacturers worldwide, enhancing digital, efficient, and sustainable industrial solutions. | Engineering Services | 🇫🇷 Senlis | 1,450 | 1965 |
| 12 | [ADVANS Group](https://www.tamtam.ai/c/advans-group) (advans-group.com)<br>Engineering firm specializing in electronic, software, and mechanical systems; handles projects or provides expertise in microelectronics, software development, data/AI, and mechanical engineering. | Engineering Services | 🇫🇷 Cachan | 1,040 | 2000 |
| 13 | [GTT](https://www.tamtam.ai/c/gtt) (gtt.fr)<br>Designs, builds cryogenic containment systems for liquefied gas transport, storage, develops LNG fuel systems, smart shipping, and green hydrogen electrolysers. | Engineering Services | 🇫🇷 Saint-Rémy-lès-Chevreuse | 729 |  |
| 14 | [SYSTRA France](https://www.tamtam.ai/c/systra-france) (systra.com)<br>Engineering and consulting for public transport and mobility solutions, improving and modernizing transport infrastructure across urban and regional territories. | Engineering Services | 🇫🇷 Paris | 633 | 1957 |
| 15 | [OTEIS Conseil & Ingénierie](https://www.tamtam.ai/c/oteis-conseil-and-ingenierie) (oteis.fr)<br>French independent group, provides consulting, engineering, and solutions for public and private projects across building, water, infrastructure, and industrial sectors, emphasizing green and digital engineering. | Engineering Services | 🇫🇷 Bois-Colombes | 619 | 2015 |
| 16 | [Groupe ACCEO \| BET Energie, Ascenseur, Environnement, AMO & MOE Spécialisées](https://www.tamtam.ai/c/groupe-acceo-bet-energie-ascenseur-environnement-amo-and-moe-specialisees) (acceo.eu)<br>Providing specialized engineering consulting for buildings, focusing on elevators, energy efficiency, environment, and project management to optimize operations and reduce costs. | Engineering Services | 🇫🇷 La Ciotat | 569 | 2003 |
| 17 | [Sonovision - Ortec Group](https://www.tamtam.ai/c/sonovision-ortec-group) (sonovisiongroup.com)<br>Experts process complex systems content, enriching products with innovative solutions throughout their lifecycle, from design to technical content and training for optimized field operations. | Engineering Services | 🇫🇷 Aix-en-Provence | 568 |  |
| 18 | [VERTICAL SEA](https://www.tamtam.ai/c/vertical-sea) (vertical-sea.com)<br>A group providing engineering, consulting, and project management services in various sectors including real estate, construction, energy, and urban planning | Engineering Services | 🇫🇷 Sèvres | 553 | 2021 |
| 19 | [AptiSkills](https://www.tamtam.ai/c/aptiskills) (aptiskills.fr)<br>Offers tailored consulting solutions in Construction, Energy & Nuclear, Aerospace & Defense, and Rail, supporting engineer careers and complex project success across France. | Engineering Services | 🇫🇷 92300 Levallois Perret | 543 | 2013 |
| 20 | [FÉTIS Group](https://www.tamtam.ai/c/fetis-group) (fetis.group)<br>Provides engineering products and services for off-road machinery, specialized vehicles, power generation, marine power, and manufacturing industries with focus on decarbonization. | Engineering Services | 🇫🇷 Nantes | 501 | 1978 |
| 21 | [ASTRON](https://www.tamtam.ai/c/astron) (astrongroup.fr)<br>Provide engineering consulting, training, and project support to drive innovation and transition in energy production and consumption sectors. | Engineering Services | 🇫🇷 Paris | 500 | 2024 |
| 22 | [HEF Groupe](https://www.tamtam.ai/c/hef-groupe) (hef.group)<br>A global leader in surface materials engineering with a focus on tribology and photonics, driving innovation in various sectors worldwide | Engineering Services | 🇫🇷 Andrézieux-Bouthéon | 484 | 1953 |
| 23 | [Elsys Design](https://www.tamtam.ai/c/elsys-design) (elsys-design.com)<br>Designs embedded electronic systems, specializing in microelectronics, hardware, embedded software, and systems for diverse sectors like energy, space, and automotive. | Engineering Services | 🇫🇷 Paris - Cachan | 471 | 2000 |
| 24 | [TPF INGENIERIE](https://www.tamtam.ai/c/tpf-ingenierie) (tpf-i.fr)<br>An engineering company specializing in Building, Infrastructure, Water/Environment, Energy/Maintenance sectors with a collaborative and innovative approach to project development | Engineering Services | 🇫🇷 Marseille | 470 | 1957 |
| 25 | [SERMA Ingénierie](https://www.tamtam.ai/c/serma-ingenierie) (serma-ingenierie.com)<br>Design, production, maintenance, and testing of embedded electronic boards with expertise in aeronautics and safety engineering services. | Engineering Services | 🇫🇷 Cornebarrieu | 460 | 2004 |
| 26 | [DORIS Group](https://www.tamtam.ai/c/doris-group) (dorisgroup.com)<br>Leading engineering, advisory, and project management services for clean conventional, renewable, and new energy projects globally. | Engineering Services | 🇫🇷 Paris | 437 | 1965 |
| 27 | [MASER ENGINEERING](https://www.tamtam.ai/c/maser-engineering) (maser-engineering.com)<br>Established in 1973, this company provides industrial process design, integration, and maintenance services for leading industry groups across multiple sectors, with strong growth and diverse projects | Engineering Services | 🇫🇷 Paris | 426 | 1973 |
| 28 | [SEMERU - FAYAT ENERGIE SERVICES](https://www.tamtam.ai/c/semeru-fayat-energie-services) (fayat.com)<br>SEMERU, part of FAYAT ENERGIE SERVICES, specializes in developing and deploying high-tech tools for building, infrastructure, facility management, environment, and transportation sectors | Engineering Services | 🇫🇷 Rungis | 424 | 1994 |
| 29 | [LUSEO](https://www.tamtam.ai/c/luseo) (luseogroup.com)<br>A multidisciplinary building design firm offering specialized engineering and project administration services for real estate development, owners, developers, contractors, and consulting firms | Engineering Services | 🇫🇷 Le Haillan | 423 | 2004 |
| 30 | [Edeis](https://www.tamtam.ai/c/edeis) (edeis.com)<br>Specializing in engineering, operation, and construction solutions for the future, this company aims to become a leader in construction services and technical management | Engineering Services | 🇫🇷 Nantes | 412 | 2016 |
| 31 | [WSP en France](https://www.tamtam.ai/c/wsp-en-france) (wsp.com)<br>A global professional engineering firm offering sustainable solutions in building, transportation, environment, industry, energy sectors with expertise in project delivery and strategic advice | Engineering Services | 🇫🇷 Paris | 393 | 1959 |
| 32 | [Anotech](https://www.tamtam.ai/c/anotech) (anotech.com)<br>Partnering on large infrastructure projects, ensuring smooth execution, mitigating risks, and delivering compliant, high-quality, and safe solutions across all project phases. | Engineering Services | 🇫🇷 Paris | 387 | 2006 |
| 33 | [ELCIMAÏ](https://www.tamtam.ai/c/elcimai) (elcimai.com)<br>A French holding specializing in building and process engineering, logistics consulting, and IT engineering, with subsidiaries catering to various industries | Engineering Services | 🇫🇷 Melun | 378 | 1992 |
| 34 | [Desmet Ballestra](https://www.tamtam.ai/c/desmet-ballestra) (desmet.com)<br>Provides custom-engineered plants and equipment for food, feed, and biofuels industries, transforming oilseeds, grains, and tropical oils into various products. | Engineering Services | 🇫🇷 Paris | 349 |  |
| 35 | [FEV France](https://www.tamtam.ai/c/fev-france) (fev.com)<br>Offers engineering and consulting services for powertrain, vehicle, and energy infrastructure development. Supports transport and energy sectors with innovation and R&D expertise. | Engineering Services | 🇫🇷 Trappes | 348 | 2004 |
| 36 | [Groupe OTE](https://www.tamtam.ai/c/groupe-ote) (ote-ingenierie.com)<br>Multidisciplinary building engineering firm providing smart, long-lasting solutions across diverse sectors including industrial, pharmaceutical, data centers, and healthcare, combining advanced techniques and specialized entities. | Engineering Services | 🇫🇷 Illkirch-Graffenstaden | 341 | 1962 |
| 37 | [GROUPE GEOSAT](https://www.tamtam.ai/c/groupe-geosat) (geo-sat.com)<br>Acquisition, processing, and analysis of geographic data for coherent and realistic territorial studies across multiple international locations. | Engineering Services | 🇫🇷 Pessac | 341 | 2000 |
| 38 | [Alpha Maintenance](https://www.tamtam.ai/c/alpha-maintenance) (alpha.fr)<br>Company specializing in oil and energy sector, providing services and solutions based in Port-de-Bouc, France. | Engineering Services | 🇫🇷 Rouen | 333 | 1986 |
| 39 | [BERIM](https://www.tamtam.ai/c/berim) (berim.fr)<br>A leading French engineering and consulting group focusing on sustainable development, urban techniques, and environmental preservation with 320 employees | Engineering Services | 🇫🇷 Paris | 299 | 1948 |
| 40 | [Sofren Group](https://www.tamtam.ai/c/sofren-group) (vulcain-eng.com)<br>An international consulting company specializing in engineering, management, and industrial strategy for the Energy, Industry, and Infrastructure sectors | Engineering Services | 🇫🇷 Saint-Cloud | 297 | 2006 |
| 41 | [APL Data Center](https://www.tamtam.ai/c/apl-data-center) (apl-datacenter.com)<br>Consultancy, engineering, construction, operation, and maintenance of data centers. Sustainable IT and ecological data center design. | Engineering Services | 🇫🇷 Montrouge | 280 | 1983 |
| 42 | [NBTECH](https://www.tamtam.ai/c/nbtech) (nbtech.fr)<br>Technical studies, technology consulting, and industrial engineering services for automotive, aerospace, railway, and industrial maintenance sectors across France. | Engineering Services | 🇫🇷 Les Ulis | 244 | 2014 |
| 43 | [Kickmaker](https://www.tamtam.ai/c/kickmaker) (kickmaker.fr)<br>A multidisciplinary team passionate about high-tech product development, specializing in robotics, medical, consumer electronics, and sustainability, with an emphasis on CSR | Engineering Services | 🇫🇷 Paris | 242 | 2016 |
| 44 | [setec its](https://www.tamtam.ai/c/setec-its) (setec.fr)<br>Specializes in urban mobility and transport engineering, designing intelligent services, systems, and infrastructure. It advises clients on strategic technical challenges, innovating in digitalization and decarbonization. | Engineering Services | 🇫🇷 Paris | 242 | 2000 |
| 45 | [AVENTA](https://www.tamtam.ai/c/aventa) (aventa.fr)<br>Empowers Marine Energy market; provides Engineering & Consultancy services; focuses on technical excellence, employees, and innovative solutions for customers. | Engineering Services | 🇫🇷 Paris | 232 | 2009 |
| 46 | [SOFRESID ENGINEERING](https://www.tamtam.ai/c/sofresid-engineering) (sofresid-engineering.com)<br>Global engineering company with high value-added services in oil, gas, shipbuilding, steel, and construction industries. Offers turnkey projects, studies, procurement, and supervision. | Engineering Services | 🇫🇷 Saint-Herblain | 230 | 1958 |
| 47 | [CITEMETRIE](https://www.tamtam.ai/c/citemetrie) (citemetrie.fr)<br>Specializes in housing renovation, providing audits, diagnostics, strategic consulting, and support for individuals, co-owners, communities, and social landlords. | Engineering Services | 🇫🇷 Paris | 227 | 1989 |
| 48 | [MK Energies](https://www.tamtam.ai/c/mk-energies) (mk-energies.fr)<br>Specialist in global energy solutions, offering expertise in electrotechnical, control systems, automation, testing, maintenance, and training Unique integrator for complex projects | Engineering Services | 🇫🇷 Saint-Léonard | 224 | 2013 |
| 49 | [Comutitres](https://www.tamtam.ai/c/comutitres) (comutitres.fr)<br>Operational management of Navigo transport tickets, customer support, revenue distribution, and development of innovative mobility solutions in Île-de-France. | Engineering Services | 🇫🇷 Paris | 210 | 2000 |
| 50 | [ADVANCE Engineering](https://www.tamtam.ai/c/advance-engineering) (advance-eng.fr)<br>ADVANCE Engineering, a subsidiary of CERAP Prévention, specializes in providing technical engineering services for complex projects in the nuclear sector | Engineering Services | 🇫🇷 Les Ulis | 205 | 2012 |
| 51 | [Groupe Solstyce](https://www.tamtam.ai/c/groupe-solstyce) (groupe-solstyce.fr)<br>Engineering, construction, and maintenance of solar photovoltaic power plants supporting energy transition for territories and businesses across the nation. | Engineering Services | 🇫🇷 Paris | 204 | 2009 |
| 52 | [ACEPP](https://www.tamtam.ai/c/acepp) (acepp.com)<br>Engineering teams specializing in complex infrastructure construction, ensuring successful project completion and safe transfer to operators since 1997. | Engineering Services | 🇫🇷 Lyon | 196 | 2017 |
| 53 | [SHERPA ENGINEERING](https://www.tamtam.ai/c/sherpa-engineering) (sherpa-eng.com)<br>Expertise in system engineering with modeling, simulation, and control-command services supported by proprietary tools and ongoing R&D partnerships. | Engineering Services | 🇫🇷 Nanterre | 195 | 1997 |
| 54 | [SOPHIA Engineering](https://www.tamtam.ai/c/sophia-engineering) (sophiaengineering.com)<br>Provides multi-sector, multi-discipline scientific and technical engineering consulting services, studies, and R&D for product lifecycle support, locally and internationally. | Engineering Services | 🇫🇷 Sophia Antipolis | 194 | 2005 |
| 55 | [SOCAPS](https://www.tamtam.ai/c/socaps) (socaps.coop)<br>Global leader in technical assistance and consulting services for various industries worldwide, focusing on skills development, ecological transition, and societal innovations | Engineering Services | 🇫🇷 Rouen | 189 | 1999 |
| 56 | [INGENICA](https://www.tamtam.ai/c/ingenica) (ingenica.fr)<br>Provides engineering design and project management services for industrial process projects across various sectors, from conceptual studies to reception. | Engineering Services | 🇫🇷 Sérézin-du-Rhône | 188 | 1991 |
| 57 | [Hydrostadium](https://www.tamtam.ai/c/hydrostadium) (hydrostadium.com)<br>Hydrostadium specializes in water flow engineering for sports and hydroelectricity, optimizing energy production while promoting water sports Inventing, building, and renovating water structures worldwide | Engineering Services | 🇫🇷 Annecy | 185 | 2001 |
| 58 | [BS Engineering](https://www.tamtam.ai/c/bs-engineering) (bse-engineering.com)<br>Partnering with construction players in civil engineering, transport infrastructure, energy, general installation, nuclear, and IT sectors. | Engineering Services | 🇫🇷 Reims | 184 | 2018 |
| 59 | [IMPAC Ingénierie (MPA Group)](https://www.tamtam.ai/c/impac-ingenierie-mpa-group) (impac-ingenierie.com)<br>Engineering consulting firm supporting major industrial sectors with project lifecycle guidance, local presence, and expert teams across France. | Engineering Services | 🇫🇷 Grans | 183 | 1988 |
| 60 | [3D PRINT](https://www.tamtam.ai/c/3d-print) (3dprint.fr)<br>Design office specializing in technology consulting, mechanical prototypes, and small series manufacturing across various sectors like automotive, medical, and aeronautic | Engineering Services | 🇫🇷 Marolles-en-Brie | 171 | 2004 |
| 61 | [AXODYN](https://www.tamtam.ai/c/axodyn) (axodyn.com)<br>Engineering for complex projects in energy, industry, and infrastructure, covering project lifecycle from studies to commissioning, with strong technical expertise. | Engineering Services | 🇫🇷 Limonest | 168 | 2013 |
| 62 | [ALCADIA Entreprises](https://www.tamtam.ai/c/alcadia-entreprises) (alcadia.fr)<br>Alcadia is an engineering consulting firm specializing in high-value technological fields, initially in nuclear and space sectors, adapted to other high-tech industries | Engineering Services | 🇫🇷 Lyon | 166 | 1998 |
| 63 | [INEXCO GROUPE](https://www.tamtam.ai/c/inexco-groupe) (inexco-groupe.com)<br>Provides multidisciplinary expertise and intervention capabilities for industrial facility surveillance, including technical inspection, thermal treatment, tank inspection, rope access work, and non-destructive testing. | Engineering Services | 🇫🇷 Port-Jérôme-sur-Seine | 165 | 1981 |
| 64 | [Groupe Pharea](https://www.tamtam.ai/c/groupe-pharea) (pharea.com)<br>Technical consulting, specializing in mechanical, electrical, and industrial engineering, supporting diverse projects from R&D to validation across various sectors, both nationally and internationally. | Engineering Services | 🇫🇷 Lyon | 156 | 2011 |
| 65 | [Pouchain SAS](https://www.tamtam.ai/c/pouchain-sas) (pouchain.fr)<br>Specializes in maintenance and engineering of electrical networks, process automation, and energy efficiency solutions for industrial and tertiary assets. | Engineering Services | 🇫🇷 Nieppe | 155 | 1890 |
| 66 | [IES](https://www.tamtam.ai/c/ies-port-jerome-sur-seine) (i-e-s.fr)<br>A company established in 1999 with 120 employees, specializing in industrial projects nationwide and internationally, with over 4000 projects completed and MASE certification since 2002 | Engineering Services | 🇫🇷 Notre Dame de Gravenchon | 153 | 1999 |
| 67 | [NextRoad](https://www.tamtam.ai/c/nextroad) (nextroad.com)<br>Supporting infrastructure managers with building, knowing, and maintaining sustainable assets across two divisions: Roads & Works of Art, and Equipment. | Engineering Services | 🇫🇷 Fontaine-lès-Dijon | 148 | 2017 |
| 68 | [Atrix](https://www.tamtam.ai/c/atrix) (atrix.group)<br>Multidisciplinary architecture and engineering services supporting diverse sectors with design, construction, modernization, and project management from study to completion. | Engineering Services | 🇫🇷 Villeurbanne | 146 | 1995 |
| 69 | [ARIAL Industries](https://www.tamtam.ai/c/arial-industries) (arial-industries.com)<br>ARIAL Industries is an engineering company specializing in mechanical, electrical/electronic, and embedded systems for clients in aerospace, nuclear, automotive, and space industries | Engineering Services | 🇫🇷 Aix-en-Provence | 141 | 2001 |
| 70 | [Transamo](https://www.tamtam.ai/c/transamo) (transamo.fr)<br>Company specialized in mobility project management: quantitative studies, transportation planning, urban studies, project management, risk management, technical expertise, innovation in mobility solutions | Engineering Services | 🇫🇷 Issy-les-Moulineaux | 137 | 1994 |
| 71 | [LGM Ingénierie](https://www.tamtam.ai/c/lgm-ingenierie) (lgm.group)<br>Experts in embedded electronics, test equipment, and embedded networks for major industrial players in aeronautics, defense, rail, and automotive sectors. | Engineering Services | 🇫🇷 Velizy-Villacoublay | 135 | 2007 |
| 72 | [Chastagner](https://www.tamtam.ai/c/chastagner) (chastagner.com)<br>Industrial partner providing technological solutions for prototypes, product industrialization, high-tech assembly integration, and project management across diverse sectors. | Engineering Services | 🇫🇷 La Ferté Bernard | 127 | 1947 |
| 73 | [BETREC IG](https://www.tamtam.ai/c/betrec-ig) (betrec.com)<br>Multidisciplinary engineering firm specializing in building and infrastructure project design, collaborating with owners and architects since 1965. | Engineering Services | 🇫🇷 Grenoble | 121 | 1965 |
| 74 | [iRiS Conseil](https://www.tamtam.ai/c/iris-conseil) (irisconseil.com)<br>Independent engineering firm with 140 experts specializing in transport infrastructure, urban planning, environment, mobility, and landscape project management. | Engineering Services | 🇫🇷 Montigny-le-Bretonneux | 118 | 1993 |
| 75 | [SIREHNA](https://www.tamtam.ai/c/sirehna) (sirehna.com)<br>A subsidiary of Naval Group, specializing in hydrodynamics and control systems for maritime units Offers embedded systems, software components, and hydrodynamic studies | Engineering Services | 🇫🇷 Bouguenais | 115 | 1986 |
| 76 | [PRINCIPIA](https://www.tamtam.ai/c/principia) (principia-group.com)<br>PRINCIPIA provides top-class engineering services, specializing in sustainable development and offering innovative, cost-effective solutions for large EPCI projects since 1981 | Engineering Services | 🇫🇷 La Ciotat | 114 | 1981 |
| 77 | [SCT Ceramics](https://www.tamtam.ai/c/sct-ceramics) (sct-ceramics.com)<br>Specializing in ceramics and brazed assemblies for high-reliability industries in extreme conditions like aerospace, medical, energy, and analytics | Engineering Services | 🇫🇷 Bazet | 113 |  |
| 78 | [néos](https://www.tamtam.ai/c/neos-beaune) (neos-solutions.com)<br>Design and deliver innovative, efficient, and profitable turnkey waste treatment plants for public and private sectors with extensive experience. | Engineering Services | 🇫🇷 Beaune | 111 |  |
| 79 | [IBITEK-Group](https://www.tamtam.ai/c/ibitek-group) (ibitek-group.com)<br>Industrial company providing electrical and automation solutions with over 15 years experience. Specialized in intelligent industry tools for production control, electrical plan management, truck flow, and remote maintenance. | Engineering Services | 🇫🇷 Marseille | 106 | 2007 |
| 80 | [Advantage](https://www.tamtam.ai/c/advantage-puteaux) (ad-vantage.fr)<br>Provides engineering expertise for strategic projects in energy, mobility, and telecommunications, from design to equipment and infrastructure commissioning on site. | Engineering Services | 🇫🇷 Puteaux | 103 | 2006 |
| 81 | [Meteo France International](https://www.tamtam.ai/c/meteo-france-international) (mfi.fr)<br>Export meteorological solutions and expertise worldwide, modernize national weather services, provide innovative systems, consultancy, training, and technical support. | Engineering Services | 🇫🇷 Toulouse | 98 | 2002 |
| 82 | [Olys Engineering](https://www.tamtam.ai/c/olys-engineering) (olys-engineering.com)<br>Provides agile engineering solutions for energy and related industries, covering creation, startup, operation, maintenance, and modification of industrial equipment and installations. | Engineering Services | 🇫🇷 Courbevoie | 98 | 2020 |
| 83 | [Arpon Technologies](https://www.tamtam.ai/c/arpon-technologies) (arpon-technologies.com)<br>ARPON TECHNOLOGIES is a consulting firm specializing in engineering and project management in various sectors They provide services from concept to completion, with a focus on quality and client satisfaction | Engineering Services | 🇫🇷 Montrouge | 97 | 2015 |
| 84 | [Applexion](https://www.tamtam.ai/c/applexion) (applexion.com)<br>The company specializes in purification equipment and services focused on reducing carbon footprint, increasing efficiency, and optimizing production processes for industrial clients worldwide | Engineering Services | 🇫🇷 Saint-Maurice-de-Beynost | 97 | 1968 |
| 85 | [Crealis](https://www.tamtam.ai/c/crealis-saint-priest) (climalife.com)<br>Specializing in industrial processes with liquefied gases, solvents, and heat transfer fluids, Crealis designs and implements innovative solutions for various sectors | Engineering Services | 🇫🇷 Saint-Priest | 95 | 1964 |
| 86 | [novagroupem](https://www.tamtam.ai/c/novagroupem) (novagroupem.com)<br>With over 20 years of experience, our company is a renowned player in engineering, inspection, and control services for industrial clients nationwide | Engineering Services | 🇫🇷 Pierrelatte | 95 | 2022 |
| 87 | [HOUSE OF ABY](https://www.tamtam.ai/c/house-of-aby)<br>Engineering and consulting firm specializing in innovative solutions across energy, aerospace, digital transformation, and life sciences sectors with regional agility. | Engineering Services | 🇫🇷 Paris | 89 | 2005 |
| 88 | [NOBATEK](https://www.tamtam.ai/c/nobatek) (nobatek.com)<br>Develop innovative energy efficiency and sustainable design solutions for construction sector, improving buildings and neighborhoods environmental quality. | Engineering Services | 🇫🇷 Anglet | 87 | 2004 |
| 89 | [SYMBIOZ](https://www.tamtam.ai/c/symbioz-paris) (selene.tech)<br>Consulting firm specializing in Mechanical, Electronic, and IT fields, placing engineers in development projects with major industry clients. | Engineering Services | 🇫🇷 Paris | 82 |  |
| 90 | [GDES en France](https://www.tamtam.ai/c/gdes-en-france) (gdes.com)<br>Specialized in industrial coatings and anticorrosion for nuclear, hydroelectric, and wind sectors. Additionally, provides services in dismantling, waste management, and reactor maintenance. | Engineering Services | 🇫🇷 Valencia | 81 |  |
| 91 | [ATYX](https://www.tamtam.ai/c/atyx) (atyx.fr)<br>Provider of high-quality technical solutions for global projects in energy, process industry, infrastructure, and urban development sectors Specializing in conventional and renewable energy | Engineering Services | 🇫🇷 Saint-Herblain | 80 | 2001 |
| 92 | [Vibratec SAS](https://www.tamtam.ai/c/vibratec-sas) (vibratec.fr)<br>Experts in noise and vibration control, improving design, reducing downtime, and preventing production loss across multiple industries worldwide. | Engineering Services | 🇫🇷 Ecully (Lyon) | 80 | 1986 |
| 93 | [INEVO Technologies](https://www.tamtam.ai/c/inevo-technologies) (inevo.fr)<br>Offers industrial process engineering services for liquids, powders, and gases, supporting design, industrialization, and optimization for various industries. | Engineering Services | 🇫🇷 Solaize | 76 | 2005 |
| 94 | [ANDRICE](https://www.tamtam.ai/c/andrice) (andricegroup.com)<br>Engineering consulting firm, technological expertise, focusing on IT, mechanic/E.I.A., and electronic. Priorities include employee fulfillment and work-wellness for reference status. | Engineering Services | 🇫🇷 Limonest | 75 | 2014 |
| 95 | [Lahocy](https://www.tamtam.ai/c/lahocy) (lahocy.com)<br>Independent engineering firm specializing in technical infrastructures, with a focus on Telecom and Energy networks | Engineering Services | 🇫🇷 Plérin | 75 | 1973 |
| 96 | [A.G.I.R](https://www.tamtam.ai/c/a-g-i-r) (agir-ingenierie.fr)<br>Support naval, offshore, aerospace industries with technical and financial project mastery, innovative solutions, project management, audit, training, and coaching services. | Engineering Services | 🇫🇷 Suresnes | 73 | 1987 |
| 97 | [TVA Engineering](https://www.tamtam.ai/c/tva-engineering) (groupe-tva.com)<br>A well-established engineering company providing expertise in various sectors like oil & gas, power generation, water treatment, and more with a focus on client success | Engineering Services | 🇫🇷 Antony | 73 | 1988 |
| 98 | [Migen](https://www.tamtam.ai/c/migen) (migen.fr)<br>This company provides comprehensive industrial maintenance services, from temporary reinforcement to full subcontracting of industrial operations, for various machines and equipment. | Engineering Services | 🇫🇷 Écully | 72 | 2021 |
| 99 | [Groupe Genaris](https://www.tamtam.ai/c/groupe-genaris) (genaris.fr)<br>Specializes in electrical and electronic design, prototyping, and manufacturing with integrated product development for defense, mobility, and industry sectors. | Engineering Services | 🇫🇷 Guyancourt | 71 |  |
| 100 | [SATIF SCUTUM GROUP](https://www.tamtam.ai/c/satif-scutum-group) (satif.fr)<br>A leader in innovative solutions for safety and security, offering high-tech engineering services for industries such as aerospace, defense, marine, and automotive since 1977 | Engineering Services | 🇫🇷 Paris | 71 | 1977 |

## 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 12, 2026.

## More company lists in France

- [The largest companies in France](https://www.tamtam.ai/l/largest-companies-france) (90,812)
- [Multinational companies in France](https://www.tamtam.ai/l/multinational-companies-france) (11,864)
- [Companies with in-house R&D in France](https://www.tamtam.ai/l/r-and-d-companies-france) (8,749)
- [Retail chains in France](https://www.tamtam.ai/l/retail-chains-france) (7,525)
- [Manufacturers in France](https://www.tamtam.ai/l/manufacturers-france) (6,697)
- [Professional services firms in France](https://www.tamtam.ai/l/professional-services-firms-france) (6,610)
- [IT services companies in France](https://www.tamtam.ai/l/it-services-companies-france) (5,000)
- [IT Services and IT Consulting companies in France](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-france) (4,943)
- [Hardware manufacturers in France](https://www.tamtam.ai/l/hardware-companies-france) (4,256)
- [Consulting firms in France](https://www.tamtam.ai/l/consulting-firms-france) (4,251)
- [Software Development companies in France](https://www.tamtam.ai/l/software-development-companies-france) (4,209)
- [Public sector organisations in France](https://www.tamtam.ai/l/public-sector-organisations-france) (4,006)
- [Family-owned companies in France](https://www.tamtam.ai/l/family-owned-companies-france) (3,859)
- [Distributors and wholesalers in France](https://www.tamtam.ai/l/distributors-and-wholesalers-france) (3,598)
- [Business Consulting and Services companies in France](https://www.tamtam.ai/l/business-consulting-and-services-companies-france) (3,392)
- [Financial services firms in France](https://www.tamtam.ai/l/financial-services-firms-france) (3,095)
- [Critical infrastructure operators in France](https://www.tamtam.ai/l/critical-infrastructure-operators-france) (2,721)
- [Real Estate companies in France](https://www.tamtam.ai/l/real-estate-companies-france) (2,514)
- [Law Practice companies in France](https://www.tamtam.ai/l/law-practice-companies-france) (2,454)
- [Subscription businesses in France](https://www.tamtam.ai/l/subscription-businesses-france) (2,405)
- [Advertising Services companies in France](https://www.tamtam.ai/l/advertising-services-companies-france) (2,360)
- [Companies with a mobile app in France](https://www.tamtam.ai/l/companies-with-mobile-app-france) (2,270)
- [Retail companies in France](https://www.tamtam.ai/l/retail-companies-france) (2,254)
- [Contract manufacturers in France](https://www.tamtam.ai/l/contract-manufacturers-france) (2,250)

## The same list elsewhere in France

- [Engineering Services companies in Île-de-France](https://www.tamtam.ai/l/engineering-services-companies-ile-de-france) (98)
- [Engineering Services companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/engineering-services-companies-auvergne-rhone-alpes) (50)
- [Engineering Services companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/engineering-services-companies-provence-alpes-cote-dazur) (28)
- [Engineering Services companies in the Rhône department](https://www.tamtam.ai/l/engineering-services-companies-rhone) (25)
- [Engineering Services companies in Paris](https://www.tamtam.ai/l/engineering-services-companies-paris) (33)

## The same list elsewhere

- [Engineering Services companies in the world](https://www.tamtam.ai/l/engineering-services-companies-in-the-world) (1,150)
- [Engineering Services companies in Europe](https://www.tamtam.ai/l/engineering-services-companies-in-europe) (623)

---

Source: https://www.tamtam.ai/l/engineering-services-companies-france