| # | Company | Employees |
|---|---|---|
| 1 |
Indra Groupindragroup.com
Leading multinational providing defense, space, air traffic management, and mobility solutions alongside information technology services, artificial intelligence, cybersecurity, and advanced digital transformation projects. |
39,308 |
| 2 |
Ministerio de Defensa Españoldefensa.gob.es
A Spanish defense ministry responsible for national security, military operations, and defense policy within the country |
9,806 |
| 3 | 8,620 | |
| 4 |
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 |
| 5 | 4,163 | |
| 6 |
Armadaarmada.defensa.gob.es
A company with 25,000 professionals focused on safeguarding Spanish interests at sea, with over 500 years of prestigious history |
3,983 |
| 7 |
SEMsemgrupo.es
Specializing in surface treatment, we are pioneers in metal coatings for various sectors including equipment, aerospace, energy generation, and oil & gas industries |
3,931 |
| 8 |
Oesiagrupooesia.com
Oesía is a multinational technology consultancy firm with divisions in ICT and security/defense, specializing in projects for clients worldwide Their innovative solutions and services drive value and growth |
3,697 |
| 9 |
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 |
| 10 |
Navantianavantia.es
Civil and military shipbuilding, ship repairs, turbine manufacturing, engine production, and weapon systems development with centuries of experience. |
2,977 |
| 11 |
MAXAMmaxamcorp.com
Design, development, manufacture of energetic materials including blasting solutions for mining, cartridges for shooting, and defense sector products worldwide. |
2,017 |
| 12 | 1,732 | |
| 13 |
Tecnocomindragroup.com
Indra is a global leader in consulting and technology, offering innovative solutions in various sectors and specializing in digital transformation |
1,661 |
| 14 |
Aciturri Aeroestructurasaciturri.com
Leading Tier 1 supplier providing comprehensive industrialization and manufacturing of highly complex technology-intensive aerostructures through design-to-build projects within the global aerospace supply chain. |
1,406 |
| 15 |
Zelenzazelenza.com
Company offers integrated ICT services, Telco network engineering, defense and security solutions, and customer experience. It helps businesses face digital challenges. |
1,332 |
| 16 |
Ejército del Aireejercitodelaireydelespacio.defensa.gob.es
Air and Space Force of Spain, part of the Spanish Armed Forces, ensures sovereignty, independence, and territorial integrity, while maintaining international security in operations |
1,171 |
| 17 |
Estaleiro Jurong Aracruzseatrium.com
The company operates a shipyard in Espírito Santo, providing cutting-edge technology for the production of oil industry vessels and structures |
1,138 |
| 18 |
SEMIgruposemi.com
A leading company in the electricity and industrial sector, specializing in international expansion, innovation, and collaboration with universities for new technologies |
1,098 |
| 19 |
GHENOVAghenova.com
International engineering company offering multidisciplinary services in naval, defense, energy, digital transformation, and infrastructures with over 30 years of experience and 900 employees worldwide |
1,072 |
| 20 |
Ejército del Aire y del Espacioejercitodelaire.defensa.gob.es
The company is dedicated to safeguarding Spanish society's values, citizens' rights, dignity, and democratic principles through proactive, innovative teamwork in the Air and Space Army |
1,027 |
| 21 |
Sener Aerospace & Defencegroup.sener
Develops satellite components, missile control systems, and communication technologies for space agencies and military programs while providing specialized engineering across diverse industrial sectors. |
943 |
| 22 |
ITURRIiturri.com
Family business group provides garments, equipment, vehicles for Security, Industrial Protection, Emergencies, Defense, and Health, protecting people with innovative solutions. |
941 |
| 23 |
EM&E Groupeme-es.com
Design and manufacture of high precision mechanical components, electro-optics, stabilization systems, and remote weapon stations for global aerospace and defense markets. |
911 |
| 24 | 902 | |
| 25 |
Tecnobit-Grupo Oesíalinkedin.com
Specializing in the design, development, manufacture, and maintenance of high-tech dual-use products for Defense, with expertise in smart vision, simulation, and secure communications |
852 |
| 26 |
AIRTIFICIALairtificial.com
A top company in Robotics and Intelligent Structures, using AI and Technology to benefit people, listed on the Spanish Stock Market |
822 |
| 27 |
IndraMind Cybersecurityindramindcybersecurity.com
Specialized cybersecurity company offering comprehensive 360º services and digital identity solutions to protect businesses internationally with sector expertise. |
791 |
| 28 |
Babcock Españababcockinternational.com
Leader in emergency air services & aircraft maintenance Specializing in medical emergencies, civil protection, search & rescue, firefighting, and training Operating worldwide with 400 aircraft fleet |
753 |
| 29 |
ALESTIS AEROSPACEalestis.aero
Supplier to aerospace OEM's and Tier 1's, offering design, production, and support services Specialized in composite materials, structures, and components with global presence |
729 |
| 30 |
Grupo Ampergrupoamper.com
A Spanish multinational specializing in technological development in communications, industry, and engineering, offering global solutions in various sectors including IoT, renewable energy, and industrial automation |
706 |
| 31 |
SII Group Spainsiigroup-spain.com
Global engineering and IT solutions provider delivering digital transformation, software development, and industrial systems for aeronautics, defense, banking, and telecommunications sectors worldwide. |
690 |
| 32 |
General Dynamics European Land Systemsgdels.com
A Europe-based business unit of a corporation specializing in armored and tracked combat vehicles, amphibious bridges, and ferry systems, prioritizing employee collaboration and continuous improvement |
676 |
| 33 |
AERTECaertecsolutions.com
Specializing in aerospace technology and engineering, this international company designs on-board systems for aircraft, unmanned aerial platforms, and offers solutions for civil and military environments |
655 |
| 34 |
TTIcelestia-tti.com
An SME specializing in radiofrequency and antenna technology, providing advanced products, communication system integration, and turnkey solutions for domestic and international clients |
630 |
| 35 | 612 | |
| 36 |
Excelticexceltic.com
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 |
555 |
| 37 |
M.Torres Diseños Industriales, SAUmtorres.es
The company is an industrial group specializing in advanced technology solutions for industrial process automation, focusing on improving productivity and efficiency for customers worldwide |
544 |
| 38 |
Sofitecsofitec.es
Manufacturing aerostructures, composite, and metallic parts, facing the future with an extraordinary team and committed to improvement and competitiveness in the aerospace industry. |
500 |
| 39 |
PLD Spacepldspace.com
An engineering and manufacturing organization pioneering private rocket launches in Europe, aiming to revolutionize the small satellite launch market globally |
487 |
| 40 | 471 | |
| 41 |
Airbus Crisacrisa.airbus.com
Specializes in developing and producing electronic equipment and software for space and defense applications, including power equipment and data handling for satellites and launchers |
448 |
| 42 |
Instituto Nacional de Técnica Aeroespacial «Esteban Terradas»inta.es
The company is a Public Research Agency specialized in dual technological research in aeronautics, space, hydrodynamics, security, and defense sectors |
440 |
| 43 |
Hispasathispasat.com
The company is a key player in the Spanish aerospace sector, focusing on bridging the digital divide and promoting sustainable development It provides broadband services, connectivity, and audiovisual content distribution in Spanish and Portuguese |
439 |
| 44 |
Relatsrelats.com
Multinational manufacturer of flexible pipes, thermal insulation, and protective sleeves for automotive, aerospace, railway, electricity, appliances, and renewable energy industries |
397 |
| 45 |
PEGASUS AERO GROUPpegasusaerogroup.com
With over 50 years of experience, the organization offers a variety of aviation services including aerial work, aeronautical training, aircraft maintenance, and simulation training |
368 |
| 46 |
ALTER TECHNOLOGY TÜV NORDaltertechnology-group.com
Microelectronic and optoelectronic services, including engineering, procurement, assembly, and testing for harsh environments. Also, equipment and systems testing and certification across various sectors. |
336 |
| 47 |
Deimosspace.indragroup.com
European technology group specializing in systems development across space, transport, aeronautics, and maritime sectors, emphasizing customer satisfaction and staff innovation |
330 |
| 48 |
AEROTECNICaerotecnic.com
High-precision machining for aerospace, naval, and automotive sectors, specializing in assembly tooling and manufacturing of aeronautical elements and assemblies. |
320 |
| 49 |
SCP SINTERSAscp-sa.es
Specializing in electrical interconnection solutions for harsh environments, our team offers customized components, production of wire-harnesses, and on-site assembly services in various industries |
313 |
| 50 |
Expal Systemsinternettepat.telkomsel.com
Specializing in defense and security sectors, we develop, integrate, and maintain weapon systems, munitions, technological systems, and provide maintenance services |
301 |
| 51 |
Thales en Españathalesgroup.com
Leading multinational in defense, aerospace, cybersecurity, and digital identity with multiple centers and 1,300 employees across Spain. |
292 |
| 52 |
ARQUIMEAarquimea.com
Global technology firm developing products and services for aerospace, defense, science industry, and fintech sectors through continuous reinvestment in high-demand innovation. |
275 |
| 53 |
WECwallair.es
Precision aerospace engine component manufacturer serving global OEMs and Tier-1 companies, specializing in fabricated assemblies for aeronautics and defense industries with a focus on product quality and social responsibility |
272 |
| 54 |
CESA - Héroux-Devtek SPAINcesa.aero
Designs, develops, manufactures, and repairs fluid-mechanical and electromechanical aerospace components for flight control, landing gear, and hydraulic systems in commercial and defense sectors. |
270 |
| 55 |
DHV Technologydhvtechnology.com
DHV Technology manufactures solar panels for various applications, offers consulting services for R&D, project management, and emphasizes professional training, teamwork, and international presence in the sectors of renewable energy, microelectronics, aeronautics, and defense They focus on developing cutting-edge solutions in the space and aeronautical sector to contribute to European technological independence and are dedicated to utilizing cubesat and small satellite technology to make space exploration more accessible |
256 |
| 56 | 250 | |
| 57 |
Spanish Navyarmada.defensa.gob.es
A historic maritime branch of the Spanish Armed Forces known for significant achievements in world exploration and trade networks |
242 |
| 58 |
Grupo Sevilla Control (GSC)gsc-aero.com
Manufacturing machined and assembled aerospace parts, offering surface and heat treatments, testing, and final assembly for major aircraft manufacturers and suppliers. |
219 |
| 59 |
SMSsms-defensa.es
Collaborative initiative to strengthen national technological and industrial capabilities in missile systems, led by Escribano Mechanical & Engineering, GMV, Instalaza, and Sener Aeroespacial |
214 |
| 60 |
ESSP SASessp-sas.eu
Provision of Pan-European space-based communication, navigation, and surveillance services, operating complex systems under strict regulations for aviation safety. |
204 |
| 61 |
Integración Tecnológica Empresarialite-es.com
Provides integral solutions in aeronautics, defense, and cybersecurity, coordinating company activities through strategic planning and execution for service excellence. |
200 |
| 62 |
Inmapa Aeronáuticainmapa.com
manufacturing metallic pieces, small assemblies for aircrafts, machining structural pieces in soft and hard materials, chemical treatment, painting, assembly |
192 |
| 63 |
SATLANTISsatlantis.com
Designs and manufactures Earth & Universe Observation payloads for Small Satellites, providing fast, cost-effective access to Space-based information with user-driven solutions |
173 |
| 64 |
Sateliotsateliot.space
Revolutionizing IoT connectivity with a LEO satellite constellation based on 5G standard, enabling global connectivity for commercial cellular IoT devices |
158 |
| 65 |
GECI Groupgeciweb.com
Global group providing high-tech, engineering, E&M support, outsourcing, logistics, and consulting services to aeronautical, telecommunications, infrastructure, and transportation industries worldwide Operating in 15+ countries |
154 |
| 66 |
ARQUIMEA Space, Science and Defensearquimea.com
Develops and manufactures products and technologies for space missions, defense, and aeronautics, including satellites, critical components, and high-performance equipment. |
133 |
| 67 |
UROVESAurovesa.com
An automotive company located in Santiago de Compostela, Spain, specializing in producing vehicles or automotive parts |
126 |
| 68 |
Aercal Aerospaceae-group.aero
Provides comprehensive solutions in aerostructures, specializing in sheet metal forming, skin stretching, machining, surface treatments, and assembly for leading aircraft manufacturers. |
117 |
| 69 |
Hisdesat Servicios Estratégicoshisdesat.es
Hisdesat is a provider of government satellite services for defense, security, intelligence, foreign services, Earth observation, radar technology, and global real-time maritime traffic information services |
116 |
| 70 |
Alén Spacealen.space
Develops end-to-end CubeSat missions and manufactures small satellite subsystems like software defined radios, on-board computers, payloads, and ground stations for global aerospace agencies. |
115 |
| 71 |
Mecanizaciones Aeronáuticas, S.A.masa.aero
Manufactures parts for the aeronautical industry, including CNC machining of structural parts, surface treatments, painting, and assembly of metal aeronautical sets. |
109 |
| 72 |
Institut d'Estudis Espacials de Catalunya - IEECieec.cat
Research institute studying space sciences including astrophysics, cosmology, planetary sciences, Earth observation, and developing space instrumentation for missions. |
108 |
| 73 |
EQUIPOS INDUSTRIALES DE MANUTENCIÓN S.A. (EINSA)einsa.es
A Spanish company specialized in designing, developing, and manufacturing advanced on-ground support equipment for civilian and military aviation, as well as tactical and logistical defense equipment |
101 |
| 74 |
Ecrimesa Groupecrimesagroup.com
The company specializes in manufacturing steel and aluminum parts using investment casting and MIM processes |
100 |
| 75 |
Xooplexoople.com
Providing AI-ready Earth observation data integrated with advanced AI for monitoring, predicting, and embedding Earth insights into enterprise workflows. |
100 |
| 76 |
Piedrafitapiedrafita.com
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. |
94 |
| 77 |
Pangea Propulsionpangeapropulsion.com
Dedicated European manufacturer focusing on advanced propulsion systems to enable more efficient, competitive, and scalable missions for the global space industry. |
93 |
| 78 |
HERJIMARherjimar.com
The company specializes in innovative metal-mechanical solutions for construction, maintenance, and assembly projects in sectors such as naval, railway, aerospace, and more |
87 |
| 79 |
Airbus GeoTechspace-solutions.airbus.com
Develops satellite imagery and geospatial solutions for decision-makers, creating advanced 2D and 3D vector products, and disrupting Earth Observation with new technologies. |
79 |
| 80 | 73 | |
| 81 |
Utingalutingal.es
Offers engineering services and manufacturing solutions for metallic parts, composites, mass productions, aerospace tooling, and special machines for various industries. |
70 |
| 82 |
Skylife Engineeringskylife-eng.com
A Spanish technology company specializing in improving, modernizing, and developing aeronautical and aerospace technology with extensive research and R&D experience |
70 |
| 83 |
Aerospace Engineering Group Spainaeg.aero
Aerospace Engineering Group specializes in maintenance, repair, overhaul, and sale/exchange of civil and military aircraft components under various certifications |
67 |
| 84 |
CITD Engineering & Technologiescitd.eu
Designs, analyzes, and simulates structures, systems, and installations across various demanding sectors. Develops products and solutions, leveraging Industry 4.0 technologies for innovation. |
66 |
| 85 |
INSTALAZA S.A.instalaza.com
A leading company founded in 1943 that designs, develops, and manufactures weapon systems using cutting-edge technology to provide efficient solutions for Infantry |
65 |
| 86 |
ACORDEacorde.com
Designs, manufactures satellite, microwave communication subsystems, components. Specializes in SATCOM products, networks, custom defense solutions, and broadband radiocommunications engineering for security. |
63 |
| 87 | 62 | |
| 88 |
GRUPO JPGgrupojpg.com
Integral maintenance, manufacturing, and supply of specialized equipment and spare parts for defense, automotive, and railway sectors, including engineering and public tender management. |
60 |
| 89 |
Aistech Spaceaistechspace.com
Providing cost-effective, regular high-resolution thermal images of Earth to offer insight into the planet's evolving resources and environment |
49 |
| 90 |
Nexus Projectesnexusprojectes.com
Develops production, engineering of technical composite products for aerospace, automotive, shipbuilding industries. Assists clients from conception through development to production. |
47 |
| 91 | 46 | |
| 92 |
INVENTIA kineticsinventiakinetics.com
This company offers design, calculation, manufacturing, and consulting processes for aerospace, automotive, and general industry, including component fabrication, assembly, and special machinery. |
45 |
| 93 |
Compoxicompoxi.com
Design, engineering, and manufacturing of advanced composite parts for various applications. Custom solutions for complex projects, focusing on high-performance materials and innovative processes. |
40 |
| 94 |
Metalúrgica MARINA | Mecanizados, calderería y soldadurametalurgicamarina.com
Specializing in custom machinery manufacturing, metalworking, and welding of various materials for energy, aerospace, and chemical industries Committed to innovation and quality service |
37 |
| 95 |
IENAI SPACEienai.space
Specializing in electric propulsion systems for nano-satellites, offering customized modules for various missions like communication, IoT, and earth observation |
37 |
| 96 |
Arkadia Spacearkadiaspace.com
Design, development, and commercialization of engines and propulsion systems using green propellants, offering a cost-effective alternative to toxic hydrazine solutions. |
36 |
| 97 |
Orbital Paradigmorbitalparadigm.space
Develops and operates reusable in-space vehicles capable of repeated launch, operation, and return for various missions, including orbital logistics and satellite servicing. |
33 |
| 98 |
Isardsatisardsat.cat
Develops Earth Observation solutions, specializing in altimetry, passive microwaves, and SAR imaging for scientific understanding of the planet through satellite mission expertise. |
30 |
| 99 |
Industrias Balmes | Chapistería de precisiónindbalmes.com
Specializes in designing and manufacturing precision sheet metal components and assemblies for demanding sectors like naval, aerospace, defense, and electronics. |
24 |
| 100 |
Rodriser Industria Aeronáutica Españolarodriser.es
A Spanish SME specializing in Engineering projects (Tooling Manufacturing) and Aeronautical MRO projects for international clients, with NATO certification in IT Technologies |
24 |
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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 Oct 24, 2026.
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