# List of Engineering Services companies in Spain

Tamtam tracks 54 Engineering Services companies headquartered in Spain. This list ranks the 50 largest by number of employees on LinkedIn, led by Tecnicas Reunidas, IDOM Consulting, Engineering, Architecture and Sener. Their median headcount is 387. Half of them were founded in 1993 or later. The most common headquarters are Madrid (11), Barcelona (9) and Paterna (3).

These Spanish engineering services companies are mostly large, established firms. Tecnicas Reunidas, founded in 1960, specializes in industrial facilities for oil & gas and power generation. IDOM Consulting, Engineering, Architecture, founded in 1957, provides consulting and engineering services. Sener, established in 1956, offers solutions across aerospace, energy, and mobility. TYPSA, from 1966, focuses on civil engineering and environmental projects. ISDEFE, founded in 1985, offers consulting and engineering for government challenges. DF-Duro Felguera, dating back to 1858, executes EPC projects in energy and industrial sectors.

The data shows a concentration of headquarters in the Madrid area, including Madrid, San Sebastián de los Reyes, and Getxo. The companies listed were predominantly founded between the 1950s and 1980s, indicating a mature sector.

🇪🇸 Spain · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Tecnicas Reunidas](https://www.tamtam.ai/c/tecnicas-reunidas) (tecnicasreunidas.es)<br>An international general contractor specializing in engineering and construction of industrial facilities in oil & gas, refining, power generation, infrastructures, and energy transition | Engineering Services | 🇪🇸 Madrid | 12,368 | 1960 |
| 2 | [IDOM Consulting, Engineering, Architecture](https://www.tamtam.ai/c/idom-consulting-engineering-architecture) (idom.com)<br>A multinational consulting, engineering, and architecture firm offering personalized client services, delivering independent, impartial global projects with a diverse, engaged workforce | Engineering Services | 🇪🇸 Bilbao | 5,424 | 1957 |
| 3 | [Sener](https://www.tamtam.ai/c/sener) (group.sener)<br>Responds to demanding challenges with innovative, efficient solutions, advancing society across aerospace, defense, energy, mobility, data centers, and digital sectors for 70 years. | Engineering Services | 🇪🇸 Getxo | 4,878 | 1956 |
| 4 | [TYPSA](https://www.tamtam.ai/c/typsa) (typsa.com)<br>A group of consulting engineering firms specializing in civil engineering, architecture, building technology, energy, and environmental projects worldwide since 1966 | Engineering Services | 🇪🇸 San Sebastián de los Reyes | 2,755 | 1966 |
| 5 | [ISDEFE](https://www.tamtam.ai/c/isdefe) (isdefe.es)<br>Provides innovative, reliable, sustainable solutions to government challenges, offering consulting, engineering services, and managing aerospace complexes for defense and administration. | Engineering Services | 🇪🇸 Madrid | 1,732 | 1985 |
| 6 | [DF-Duro Felguera](https://www.tamtam.ai/c/df-duro-felguera) (durofelguera.com)<br>Execution of turnkey EPC projects and services in energy, industrial sectors, including renewable energies, mining, oil, gas, and digital security. | Engineering Services | 🇪🇸 Gijón | 1,325 | 1858 |
| 7 | [EAG (Empresarios Agrupados - GHESA)](https://www.tamtam.ai/c/eag-empresarios-agrupados-ghesa) (empresariosagrupados.es)<br>A leading European engineering group with expertise in complex projects, operating internationally with a large workforce and significant turnover | Engineering Services | 🇪🇸 Madrid | 1,161 | 1963 |
| 8 | [Eptisa](https://www.tamtam.ai/c/eptisa) (eptisa.com)<br>A multinational company specializing in engineering, consultancy, information technologies, and social development with a focus on sustainable solutions and client satisfaction | Engineering Services | 🇪🇸 Madrid | 1,155 | 1956 |
| 9 | [Apave Spain (antes Eurocontrol)](https://www.tamtam.ai/c/apave-spain-antes-eurocontrol) (eurocontrol.apave.com)<br>EUROCONTROL provides a wide range of quality control and engineering services for industrial materials, equipment, and plants, including civil engineering projects | Engineering Services | 🇪🇸 Madrid | 1,030 | 1973 |
| 10 | [INERCO](https://www.tamtam.ai/c/inerco) (inerco.com)<br>Provider of comprehensive services and advanced technologies for sustainable industrial development, specializing in emissions reduction, energy efficiency, renewables, and environmental consulting globally | Engineering Services | 🇪🇸 Seville | 852 | 1984 |
| 11 | [Sampol](https://www.tamtam.ai/c/sampol) (sampol.com)<br>A multinational, family-owned company founded in 1934, specializing in energy projects, electrical installations, telecommunications, and control systems for various sectors globally | Engineering Services | 🇪🇸 Palma | 763 | 1934 |
| 12 | [EOSOL](https://www.tamtam.ai/c/eosol) (grupoeosol.com)<br>A multinational group of service companies specializing in energy project development, photovoltaic plant operation, engineering services, and automation system design and manufacturing | Engineering Services | 🇪🇸 Pamplona | 732 | 2008 |
| 13 | [IDEA](https://www.tamtam.ai/c/idea-madrid) (ideatsg.com)<br>Company specializes in engineering, integrating new technologies for industrial digitization, with a focus on BIM methodology and digital twins, working across various sectors nationally and internationally. | Engineering Services | 🇪🇸 Madrid | 673 | 2008 |
| 14 | [Exceltic](https://www.tamtam.ai/c/exceltic) (exceltic.com)<br>A European engineering and consulting firm offering services in civil, electronic, and mechanical engineering, as well as IT & Telecommunications, with a focus on excellence and customer satisfaction | Engineering Services | 🇪🇸 Madrid | 555 | 2005 |
| 15 | [INCOSA](https://www.tamtam.ai/c/incosa) (incosa.es)<br>Engineering and consulting services provider with over 35 years experience, specializing in building, infrastructure, energy, industry, environment, and IT sectors globally | Engineering Services | 🇪🇸 Madrid | 550 | 1985 |
| 16 | [GDES \| Grupo Dominguis Energy Services](https://www.tamtam.ai/c/gdes-grupo-dominguis-energy-services) (gdes.com)<br>Provision of industrial services including operations, maintenance, decommissioning, surface treatment, logistics, energy efficiency, and digital transformation for diverse energy sectors. | Engineering Services | 🇪🇸 Paterna | 535 | 1932 |
| 17 | [BOSLAN Ingeniería y Consultoría](https://www.tamtam.ai/c/boslan-ingenieria-y-consultoria) (accenture.com)<br>Specializing in offshore wind energy, renewable energies, green hydrogen, and retail, we offer integrated management systems and a skilled team for comprehensive project solutions | Engineering Services | 🇪🇸 Bilbao | 534 | 2000 |
| 18 | [SOCOTEC Spain](https://www.tamtam.ai/c/socotec-spain) (socotec.es)<br>Offering comprehensive engineering solutions to ensure reliability, digitization, and sustainability throughout the infrastructure lifecycle, aiming to transform the world through innovative and responsible engineering | Engineering Services | 🇪🇸 Barcelona | 481 | 2013 |
| 19 | [NERTUS](https://www.tamtam.ai/c/nertus) (nertus.es)<br>A company established in 2002, specializing in comprehensive maintenance services for railway rolling stock, facilities, and equipment in the transportation sector | Engineering Services | 🇪🇸 Madrid | 464 | 2002 |
| 20 | [COMSA Service](https://www.tamtam.ai/c/comsa-service) (comsaservice.com)<br>A multidisciplinary company specializing in maintenance, energy efficiency, building management, technical assistance, and ornamental fountain design, construction, and conservation | Engineering Services | 🇪🇸 Cornellà de Llobregat | 450 | 1994 |
| 21 | [Grupo ALUMAN](https://www.tamtam.ai/c/grupo-aluman) (grupoaluman.com)<br>Global leader in architectural envelopes for unique projects, providing design, engineering, manufacturing, and project management services with focus on innovation and sustainability | Engineering Services | 🇪🇸 Arteixo | 448 | 1973 |
| 22 | [Iplan Gestión Integral](https://www.tamtam.ai/c/iplan-gestion-integral) (iplangroup-eng.com)<br>A company offering engineering services in energy, civil works, renewable energies, and environment, with a focus on integral project execution | Engineering Services | 🇪🇸 Barcelona | 443 | 2008 |
| 23 | [ONDOAN](https://www.tamtam.ai/c/ondoan) (ondoan.com)<br>Offers comprehensive engineering, installation, and maintenance services, specializing in industrial, environmental, energy, and fire protection solutions for diverse clients. | Engineering Services | 🇪🇸 Zamudio | 400 | 1982 |
| 24 | [Cero](https://www.tamtam.ai/c/cero) (wearecero.com)<br>A multidisciplinary design studio in Barcelona merging design, engineering, simulation, composite, and testing for various industries, focusing on lightweight design using cutting-edge technologies | Engineering Services | 🇪🇸 Barcelona | 396 | 2010 |
| 25 | [AESA](https://www.tamtam.ai/c/aesa) (aesa.net)<br>Energy engineering and consulting focused on high-efficiency solutions, specializing in cogeneration, biomass, and waste energy valorization Expert teams ensure successful project outcomes | Engineering Services | 🇪🇸 Barcelona | 387 | 1981 |
| 26 | [SATEL](https://www.tamtam.ai/c/satel) (satel-sa.com)<br>SATEL is an international group providing engineering services since 1988, trusted by energy and telecom companies, expanding globally since 2011 | Engineering Services | 🇪🇸 Zaragoza | 379 | 1988 |
| 27 | [ROADIS](https://www.tamtam.ai/c/roadis) (roadis.com)<br>A global leader in developing, operating, and managing essential infrastructure assets, managing toll roads in Brazil, Mexico, India, Portugal, and Spain | Engineering Services | 🇪🇸 Madrid | 339 | 2016 |
| 28 | [Fulton](https://www.tamtam.ai/c/fulton) (fulton.es)<br>Fulton Servicios Integrales manages properties and their contents to create a comfortable and secure environment tailored to companies' needs | Engineering Services | 🇪🇸 Paterna | 202 | 1966 |
| 29 | [EKIUM CPQ](https://www.tamtam.ai/c/ekium-cpq) (cpqingenieros.com)<br>Creating a group to keep employees, collaborators, and clients informed about news, projects, and updates Also used to track annual goals and foster connections | Engineering Services | 🇪🇸 Barcelona | 196 | 1980 |
| 30 | [INGENOR](https://www.tamtam.ai/c/ingenor) (ingenor.com)<br>A group of companies offering professional services in Engineering, Architecture, and Project & Construction Management | Engineering Services | 🇪🇸 Alcobendas | 182 | 2000 |
| 31 | [Arghos](https://www.tamtam.ai/c/arghos) (arghos.es)<br>ARGHOS is an engineering services company, specializing in aerospace, transportation, process industry, energy, and defense sectors They offer innovative solutions worldwide | Engineering Services | 🇪🇸 Madrid | 181 | 2007 |
| 32 | [M47 - AI Company](https://www.tamtam.ai/c/m47-ai-company) (m47labs.com)<br>The company advances Natural Language Processing (NLP) to automate complex processes and drive innovation, providing effective business insights | Engineering Services | 🇪🇸 Barcelona | 177 | 2018 |
| 33 | [Nadico - Ingeniería, Arquitectura, Consultoría -](https://www.tamtam.ai/c/nadico-ingenieria-arquitectura-consultoria) (nadico.net)<br>Specialized company providing technical services in engineering, architecture, and industrial consulting | Engineering Services | 🇪🇸 Parets Del Vallès | 172 | 1995 |
| 34 | [Abance](https://www.tamtam.ai/c/abance) (abance.es)<br>Engineering services, naval, defense, military, civilian vessels, submarines, offshore, offshore wind platforms, international markets, robotics, digitalization, control systems. | Engineering Services | 🇪🇸 El Puerto de Santa María | 172 | 1994 |
| 35 | [Enginyers Industrials de Catalunya](https://www.tamtam.ai/c/enginyers-industrials-de-catalunya) (eic.cat)<br>Professional association supporting over 10,000 engineers in Catalonia with a range of services for personal, professional, and family needs, including professional liability coverage | Engineering Services | 🇪🇸 Barcelona | 168 | 1863 |
| 36 | [Vestel Ingenieros](https://www.tamtam.ai/c/vestel-ingenieros) (vestelingenieros.com)<br>A multidisciplinary team specializing in electrical and energy engineering projects, providing tailored solutions to ensure customer satisfaction and loyalty through efficient project management | Engineering Services | 🇪🇸 Paterna | 160 | 2004 |
| 37 | [Adasoft](https://www.tamtam.ai/c/adasoft) (adasoft.com)<br>A technology company specializing in digitizing industries like pharmaceuticals, food & beverage, and process industries worldwide with advanced solutions | Engineering Services | 🇪🇸 Sant Joan Despí | 158 | 1984 |
| 38 | [Techno Pro Hispania](https://www.tamtam.ai/c/techno-pro-hispania) (tphispania.com)<br>Techno Pro Hispania offers engineering expertise for industrial systems, specializing in Naval, Industrial, and Energy sectors They provide production management solutions and proactive project support | Engineering Services | 🇪🇸 Cartagena | 158 | 1990 |
| 39 | [GABITEL INGENIEROS](https://www.tamtam.ai/c/gabitel-ingenieros) (gabitel.net)<br>Specialized in telecommunications engineering, agro-food engineering, and software development Known for project execution expertise and skilled workforce | Engineering Services | 🇪🇸 Huelva | 155 | 2005 |
| 40 | [Nordés ancín](https://www.tamtam.ai/c/nordes-ancin) (nordesancin.com)<br>Nordés Ancín is an engineering company specializing in the design, installation, and maintenance of HVAC, ventilation, heating, refrigeration, and electrical systems with a focus on quality, innovation, and environmental sustainability | Engineering Services | 🇪🇸 Cambre | 152 | 1997 |
| 41 | [Sisener](https://www.tamtam.ai/c/sisener) (sisener.com)<br>Specializing in engineering services in the field of electric energy generation, transmission, and distribution, with a strong focus on renewable energy projects | Engineering Services | 🇪🇸 Zaragoza | 152 | 2000 |
| 42 | [FEV Iberia SL](https://www.tamtam.ai/c/fev-iberia-sl) (fev.com)<br>A globally recognized leader in designing and developing internal combustion engines, vehicle propulsion systems, alternative energy technology, instrumentation, and testing services | Engineering Services | 🇪🇸 Barcelona | 150 |  |
| 43 | [bis](https://www.tamtam.ai/c/bis-barcelona) (bis211.com)<br>An engineering firm based in Barcelona specialized in structural design for healthcare, educational, and sports facilities, with over 3000 projects worldwide | Engineering Services | 🇪🇸 Barcelona | 149 | 1990 |
| 44 | [INGEDETEC GROUP](https://www.tamtam.ai/c/ingedetec-group) (ingedetec.com)<br>An international engineering company specializing in automotive, railway, and aerospace projects, providing engineering services, technical solutions, and electrical system development | Engineering Services | 🇪🇸 Sant Esteve Sesrovires | 127 | 2005 |
| 45 | [SOLUTE](https://www.tamtam.ai/c/solute) (solute.es)<br>A multidisciplinary technical engineering consultancy specializing in renewable energy, wind energy, automotive, solar energy, software development, weather forecasting, and virtual reality solutions | Engineering Services | 🇪🇸 San Sebastián de los Reyes | 122 | 2006 |
| 46 | [AIN ACTIVE SL](https://www.tamtam.ai/c/ain-active-sl) (ain-active.com)<br>AIN active is an energy engineering and civil engineering company that designs, projects, and operates infrastructures worldwide, specializing in consulting, industrial buildings, and infrastructure projects | Engineering Services | 🇪🇸 A Coruña | 118 | 2003 |
| 47 | [Pronor](https://www.tamtam.ai/c/pronor) (pronor.es)<br>Specializing in energy project solutions and integration, the company covers generation, transport, distribution, installation, and commissioning of energy infrastructures | Engineering Services | 🇪🇸 Llanera | 104 | 1993 |
| 48 | [ALOR-tech](https://www.tamtam.ai/c/alor-tech) (alor-tech.com)<br>Human engineering, placing humans at the center of innovation, and talent as the driving force | Engineering Services | 🇪🇸 San Sebastián | 95 | 2017 |
| 49 | [Piedrafita](https://www.tamtam.ai/c/piedrafita) (piedrafita.com)<br>Develops engineering expertise and high-value solutions for vehicle engineering and land platforms, specializing in steering, suspension, electro-hydraulics, and electronics, particularly for defense and motorsport sectors. | Engineering Services | 🇪🇸 Paracuellos de Jarama | 94 | 1987 |
| 50 | [Malena Engineering S.L](https://www.tamtam.ai/c/malena-engineering-s-l) (malena-eng.com)<br>An independent consulting firm in Spain offering engineering services, software development, and management with a focus on high technical expertise and customer satisfaction | Engineering Services | 🇪🇸 Valladolid | 63 | 2013 |

## 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 Spain

- [The largest companies in Spain](https://www.tamtam.ai/l/largest-companies-spain) (10,893)
- [Multinational companies in Spain](https://www.tamtam.ai/l/multinational-companies-spain) (2,706)
- [Retail chains in Spain](https://www.tamtam.ai/l/retail-chains-spain) (1,251)
- [Manufacturers in Spain](https://www.tamtam.ai/l/manufacturers-spain) (1,080)
- [Companies with in-house R&D in Spain](https://www.tamtam.ai/l/r-and-d-companies-spain) (1,067)
- [Wellness and Fitness Services companies in Spain](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-spain) (879)
- [Healthcare providers in Spain](https://www.tamtam.ai/l/healthcare-providers-spain) (711)
- [Companies with a mobile app in Spain](https://www.tamtam.ai/l/companies-with-mobile-app-spain) (561)
- [Hotel and hospitality groups in Spain](https://www.tamtam.ai/l/hospitality-groups-spain) (539)
- [Family-owned companies in Spain](https://www.tamtam.ai/l/family-owned-companies-spain) (531)
- [Software Development companies in Spain](https://www.tamtam.ai/l/software-development-companies-spain) (530)
- [Professional services firms in Spain](https://www.tamtam.ai/l/professional-services-firms-spain) (522)
- [Critical infrastructure operators in Spain](https://www.tamtam.ai/l/critical-infrastructure-operators-spain) (517)
- [IT services companies in Spain](https://www.tamtam.ai/l/it-services-companies-spain) (484)
- [Financial services firms in Spain](https://www.tamtam.ai/l/financial-services-firms-spain) (482)
- [Food and Beverage Services companies in Spain](https://www.tamtam.ai/l/food-and-beverage-services-companies-spain) (462)
- [SaaS companies in Spain](https://www.tamtam.ai/l/saas-companies-spain) (445)
- [Retail Apparel and Fashion companies in Spain](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-spain) (439)
- [IT Services and IT Consulting companies in Spain](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-spain) (437)
- [Hospitality companies in Spain](https://www.tamtam.ai/l/hospitality-companies-spain) (435)
- [Consulting firms in Spain](https://www.tamtam.ai/l/consulting-firms-spain) (420)
- [E-commerce companies in Spain](https://www.tamtam.ai/l/ecommerce-companies-spain) (416)
- [Food and beverage companies in Spain](https://www.tamtam.ai/l/food-and-beverage-companies-spain) (416)
- [Hardware manufacturers in Spain](https://www.tamtam.ai/l/hardware-companies-spain) (415)

## 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)

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