These companies with in-house R&D in Basque Country operate in diverse sectors, with a notable presence in engineering and manufacturing. Siemens Gamesa, founded in 2017, is a global technology leader in renewable energy. CAF, established in 1917, designs and manufactures sustainable transportation systems. IDOM Consulting, Engineering, Architecture, from 1957, provides multinational consulting services. Sener, founded in 1956, offers solutions across aerospace, defense, and energy sectors. EHU, a public research university, and ITP Aero, specializing in aircraft engines, also feature among the largest.
A significant cluster of companies is involved in engineering services, including IDOM Consulting, Engineering, Architecture and Sener. The data shows a mix of well-established companies such as CAF, founded in 1917, and newer entities like Siemens Gamesa, established in 2017, indicating a blend of heritage and recent growth in the region's R&D landscape.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Siemens Gamesasiemensgamesa.com
Global technology leader in renewable energy industry, specializing in wind turbine development, manufacturing, installation, and maintenance Driving energy transition towards sustainability |
19,821 | |||
| 2 |
CAF (Construcciones y Auxiliar de Ferrocarriles)cafmobility.com
Designs and manufactures advanced sustainable transportation systems including accessible rail vehicles and zero-emission urban buses worldwide. |
10,000 | |||
| 3 |
Eroskicorporativo.eroski.es
A multinational socio-business group with over 50,000 employees, specializing in retail sales through a vast network of supermarkets and hypermarkets |
7,340 | |||
| 4 |
IDOM Consulting, Engineering, Architectureidom.com
A multinational consulting, engineering, and architecture firm offering personalized client services, delivering independent, impartial global projects with a diverse, engaged workforce |
5,424 | |||
| 5 |
Senergroup.sener
Responds to demanding challenges with innovative, efficient solutions, advancing society across aerospace, defense, energy, mobility, data centers, and digital sectors for 70 years. |
4,878 | |||
| 6 | 4,520 | ||||
| 7 |
ITP Aeroitpaero.com
A leading aircraft engine and component company developing technology for a sustainable aerospace future, with global facilities and commitment to net zero carbon emissions |
3,345 | |||
| 8 |
Orona Grouporona-group.com
Design manufacture install maintain modernize lifts escalators with innovations in traffic management space optimization comfort safety across Europe. |
2,818 | |||
| 9 |
CIE Automotivecieautomotive.com
An industrial group specializing in supplying automotive components and subassemblies on a global scale, offering various technologies to meet customer needs |
2,561 | |||
| 10 |
University of Deustodeusto.es
A renowned university offering competency-based education, values-driven teaching, specialized research, and an international perspective for over 125 years |
2,169 | |||
| 11 |
ORONAorona-group.com
A European business group specializing in vertical lifting solutions, offering design, manufacturing, installation, maintenance, and modernization of elevators and escalators |
1,659 | |||
| 12 |
FAES FARMAfaesfarma.com
A Spanish pharmaceutical company with international presence, Faes Farma conducts research, produces, and markets pharmaceutical products and raw materials, exporting globally |
1,519 | |||
| 13 |
TECNALIA Research & Innovationtecnalia.com
Tecnalia Research & Innovation is a leading private technological center in Spain focused on market-oriented and specialized applied research to contribute to business and societal growth |
1,468 | |||
| 14 |
Artechearteche.com
A leading provider of high-tech solutions and equipment for the electric power industry worldwide, including instrument transformers, relays, protection equipment, and automation systems |
1,422 | |||
| 15 |
Tekneiteknei.com
A leading technology services and consulting firm specializing in innovative digital solutions, business automation, cybersecurity, and infrastructure modernization, with a focus on fostering innovation and collaboration among its team |
1,242 | |||
| 16 |
FAGOR EDERLAN | Global Automotive Componentsfagorederlan.com
A global leader in manufacturing chassis, powertrain, and structural components for the automotive industry with a focus on sustainability and innovation |
1,117 | |||
| 17 |
ULMA Packagingulmapackaging.com
Leading provider of packaging solutions offering personalization, friendly service, and cutting-edge technology to meet customer needs |
1,112 | |||
| 18 |
Saltosaltosystems.com
A global leader in access control technologies, part of a unique brand platform focused on digital transformation through innovative solutions |
1,056 | |||
| 19 |
TAMOINtamoin.com
Specializing in industrial services such as engineering, construction, maintenance, and overhauls for clients in renewable energies, power generation, and oil & gas sectors |
861 | |||
| 20 |
Sidenor Aceros Especialessidenor.com
A leading European steel producer of special steel long products and cold finished products with production centers and business delegations across Europe |
643 | |||
| 21 | 640 | ||||
| 22 | 625 | ||||
| 23 |
Teknikertekniker.es
A technology center specializing in Advanced Manufacturing, Material Engineering, and ICTs to enhance society's growth and competitiveness sustainably |
619 | |||
| 24 |
TUBACEXtubacex.com
A world leader in designing, manufacturing, and installing industrial products and services for the energy and mobility sectors globally |
601 | |||
| 25 | 587 | ||||
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. | |||||
| 26 |
Fagor Arrasate S. Coop.fagorarrasate.com
A global leader in the design and manufacture of mechanical and hydraulic presses, stamping systems, cutting and processing lines, and metal part forming equipment |
534 | |||
| 27 |
Vaillant Group Spainvaillant-group.com
A leader in heating, ventilation, and air conditioning technology, specializing in high-efficiency products with a focus on sustainability and employee well-being |
500 | |||
| 28 |
Multiverse Computingmultiversecomputing.com
A deep-tech company specializing in Quantum Computing and AI, offering hyper-efficient software for various industries to gain a competitive edge |
497 | |||
| 29 |
Walter Packwalterpack.com
Designs and manufactures functional decorative plastic parts for automotive, home appliances, and consumer electronics, utilizing advanced technologies and bespoke solutions. |
487 | |||
| 30 |
BATZ GROUPbatz.com
Designing, manufacturing composite lightweight structures, active aerodynamic components, mechanical and mechatronic control systems to reduce CO2 emissions for automotive OEMs. |
464 | |||
| 31 |
ZIVzivautomation.com
Designs, manufactures, and markets digital equipment and systems for protection, control, measurement, and communication in the electrical power industry Offers engineering, services, and system integration |
455 | |||
| 32 |
Ceit Research Centerceit.es
A non-profit research centre affiliated with the University of Navarra specializing in applied industrial research, doctoral teaching, and collaboration with R&D departments |
446 | |||
| 33 |
IKERLANikerlan.es
A leading technology center offering competitive value to industry through digital technologies, artificial intelligence, cybersecurity, mechatronics, and energy solutions |
438 | |||
| 34 |
Ingeteam Power Technologyingeteam.com
Specializing in power and control electronics, generators, motors, and pumps, the company offers maintenance services and operates globally with a focus on R&D |
420 | |||
| 35 |
Tubos Reunidos Grouptubosreunidosgroup.com
Global leader in premium seamless steel tubular products, specializing in niche segments with tailored solutions for clients worldwide in various industries |
419 | |||
| 36 |
Petronor, S.A.petronor.eus
A company founded in 1968 in Spain, specializing in refining and marketing petroleum products, pioneering in technology and community involvement |
403 | |||
| 37 |
DANOBATdanobat.com
A global leader in manufacturing innovative precision grinding machines, lathes, and robotic systems, providing tailored solutions to enhance competitiveness worldwide |
399 | |||
| 38 |
Matiamatiafundazioa.eus
A non-profit organization with over 130 years of experience in caring for the elderly, providing personalized services to promote autonomy and dignity in aging |
394 | |||
| 39 |
Viralgenviralgen.com
Develops and manufactures gene therapies, specifically AAV production, in a GMP-certified environment to advance health and welfare. |
385 | |||
| 40 |
Coprecicopreci.com
Appliance manufacturer with a customer-oriented policy, operating internationally with 9 production centers and serving major appliance groups worldwide |
378 | |||
| 41 |
HINE Grouphinegroup.com
A leading provider of hydraulic systems, components, and cooling solutions for industrial and renewable energy sectors worldwide with over four decades of experience |
378 | |||
| 42 |
CIKAUTXOcikautxo.es
A company belonging to the MONDRAGON Corporation specializing in developing and manufacturing rubber and plastic components for various applications |
363 | |||
| 43 |
Gamesa Electricgamesaelectric.com
Global leader in electrical equipment design and manufacturing for various industries, offering customizable solutions, leveraging parent company's technology expertise and worldwide maintenance services network |
354 | |||
| 44 |
Fagor Automation | CNC & Feedback Systems | Automation Solutionsfagorautomation.com
Specializing in machine automation and control, this global leader offers tailored solutions with advanced software development capabilities and a wide international network |
351 | |||
| 45 |
SARRALLE - Industrial Engineering Leadersarralle.com
Industrial group specializing in engineering, design, and construction of equipment for the steel industry, with over 50 years of international project experience. |
334 | |||
| 46 |
ERREKAerreka.com
An autonomous cooperative group with diverse business units, focusing on innovation and international expansion, operating in over 15 countries worldwide |
320 | |||
| 47 |
Irizar S., Coop.irizar.com
A leading business group in the bus and coach sector, electronics, communications, and rotating machinery with a global presence in over 90 countries |
318 | |||
| 48 |
Basque Culinary Centerbculinary.com
The organization includes a Faculty of Gastronomic Sciences and a Center for Research, Innovation, and Entrepreneurship within Mondragon Unibertsitatea |
316 | |||
| 49 |
Vicomtechvicomtech.org
An applied research center specializing in digital technologies, focusing on visual computing, interaction, and artificial intelligence to develop smart solutions |
310 | |||
| 50 | 292 | ||||
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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 12, 2026.
More company lists in Basque Country
- The largest companies in Basque Country 464
- Multinational companies in Basque Country 117
- Manufacturers in Basque Country 87
- Hardware manufacturers in Basque Country 55
- Retail chains in Basque Country 31
- Wellness and Fitness Services companies in Basque Country 30
- Transportation, Logistics, Supply Chain and Storage companies in Basque Country 26
- Industrial Machinery Manufacturing companies in Basque Country 25
- IT services companies in Basque Country 25
The same list elsewhere in Spain
- Companies with in-house R&D in Spain 1,067
- Companies with in-house R&D in Catalonia 324
- Companies with in-house R&D in Community of Madrid 245
- Companies with in-house R&D in Valencian Community 102
- Companies with in-house R&D in Andalusia 89
- Companies with in-house R&D in Region of Murcia 25
- Companies with in-house R&D in Madrid 158
- Companies with in-house R&D in Barcelona 122