| # | Company | Employees |
|---|---|---|
| 1 |
Mota-Engilmota-engil.com
Multinational group specializing in engineering, construction, environment, transport concessions, energy, and mining across Europe, Africa, and Latin America. |
9,395 |
| 2 |
Kirby Building Systems - A group company of Alghanim Industrieskirbyinternational.com
A global leader in pre-engineered steel buildings with a wide range of applications, manufacturing high-quality products and providing tailored solutions worldwide |
2,187 |
| 3 |
Martifer Groupmartifer.com
A multinational industrial group focused on the metallic construction sector, with around 1,400 employees and listed on Euronext Lisbon |
1,791 |
| 4 |
Grupo Casaiscasais.pt
A leading construction group in Portugal offering diverse services in engineering, trade, tourism, real estate, energy, and more Focus on innovation and sustainability |
1,639 |
| 5 |
dst groupdstsgps.com
A leader in construction and public works, the group has expanded into environmental, telecommunications, and renewable energy sectors both nationally and internationally |
1,470 |
| 6 |
Tecnoviatecnovia.pt
A Portuguese construction holding company founded in 1973 with a global presence, specializing in engineering projects, construction, and public works |
1,010 |
| 7 |
CJR Renewablescjr-renewables.com
Provider of integrated services for wind farms and solar plants, including design, construction, installation, transportation, and turbine erection, offering flexible and turnkey solutions for a greener future |
993 |
| 8 |
Zagope - Engineering & Constructionzagope.pt
A company specializing in public and private sector construction projects, operating in Europe, Africa, and Asia with a focus on innovation, safety, and environmental responsibility |
816 |
| 9 |
MCAmcagroup.com
A Portuguese group founded in 1998, focused on Energies, Urban Development, Infrastructures, and Healthcare, with international presence in multiple geographical clusters |
764 |
| 10 |
ACAgrupo-aca.com
A leading Portuguese construction company with a diverse portfolio in public and private works, specializing in infrastructure, civil construction, and urban revitalization |
755 |
| 11 | 737 | |
| 12 |
Soares da Costasoaresdacosta.com
Specializing in civil construction, engineering, infrastructures, and industrial activities, we have over 90 years of experience in adapting to market changes |
728 |
| 13 |
Teixeira Duarte - Engenharia e Construçõesteixeiraduarteconstrucao.com
A global construction company with over 2,000 employees, operating in multiple countries, focused on creating value for customers, employees, partners, and communities |
677 |
| 14 |
Conduril Engenharia S.A.conduril.pt
The company operates in the field of Civil Engineering, striving to be one of the best Portuguese engineering firms, with a focus on technical excellence and economic sustainability |
513 |
| 15 |
SACYR SOMAGUEsomague.pt
Global engineering service provider offering large-scale works in public works and construction sectors with a focus on quality, safety, environmental management, and innovation |
479 |
| 16 |
JORGE COSTA. Nenhumajorge-costa.pt
Specialized company offering maintenance services for condominiums, shops, and offices, providing technical assistance in various areas |
476 |
| 17 |
Gabriel Couto S.A.gabrielcouto.pt
With expertise in various construction projects since 1948, the company delivers high-quality, timely, and innovative solutions for public and private developers |
363 |
| 18 |
Transfortransforgroup.com
A resilient and innovative group representing four specialized units in construction, carpentry, fit-out, and sustainable solutions, providing integrated services and exceeding client expectations |
345 |
| 19 |
Martifer Metallic Constructionsmartifer.com
Global player in metallic construction sector, specializing in steel, aluminum, and glass facades, stainless steel solutions, wind energy components, and engineering solutions for complex projects |
315 |
| 20 |
PAINHAS SApainhas.pt
Established in Portugal in 1980, this company specializes in energy and telecommunication networks, providing global solutions through highly skilled teams and advanced technology |
311 |
| 21 |
Omatapalo E&C Portugalomatapalo.com.pt
Specializing in civil construction, with over 70 years of experience in Portugal and continuous growth in Angola A multidisciplinary team ensures quality results and timely solutions |
291 |
| 22 |
Somafel | Railway Works Expertssomafel.com
With over 60 years of experience, we are a leading authority in Railway Engineering, specializing in complex projects across different continents |
284 |
| 23 |
BRAGALUXbragalux.pt
Specializing in developing solutions for electrical infrastructures, security, telecommunications, plumbing, and HVAC systems tailored to meet the needs of each client |
278 |
| 24 |
Saint-Gobain Portugalsaint-gobain.pt
A global leader in sustainable construction, developing innovative solutions for building renovation, lightweight construction, and decarbonization with a commitment to carbon neutrality by 2050 |
274 |
| 25 |
Race S.A.race.com.pt
With over 30 years of experience in Refrigeration, HVAC, and Control Systems, the company leads the national market with innovative solutions |
199 |
| 26 |
PRF - Gas Solutionsprf.pt
Specializing in engineering, constructing, and maintaining fuel gas infrastructure including LNG, CNG, hydrogen, biogas systems, refueling stations, satellite plants, and bunkering systems |
195 |
| 27 |
O FELIZ Groupofeliz.com
Multinational group specialized in steel construction, cold formed steel products, metallic towers, stainless steel products, precision laser cutting, tools, and real estate |
180 |
| 28 |
Grepcongrepcon.com
Specializing in construction safety and health, the company offers coordination, management, supervision, studies, plans, manuals, procedures, and risk assessments for construction sites in compliance with Spanish regulations |
177 |
| 29 |
Vilaplano Construçõesvilaplano.com
Specializing in reinforced concrete construction projects globally, with 30 years of experience Providing formwork, reinforcements, and executing complex projects |
176 |
| 30 |
Omninstalomninstal.com
Established in 1990 through the integration of Omninstal Electricidade, the company specializes in electrical installations, distribution, telecommunications, water, gas, and renewables |
168 |
| 31 |
EIP Serviços, S.A.eip-sa.pt
Provides robust, quality engineering services in the energy sector since 1956, with global presence and a large team of engineers. |
167 |
| 32 |
Blocotelha Steel Constructionsblocotelha.com
A global leader in steel constructions, prioritizing technology infused with human spirit to improve quality of life and create a better world |
163 |
| 33 |
Verdasca Groupverdascagroup.com
A leading Portuguese provider of precast concrete and ready-mix concrete products in the construction industry since 1987 |
160 |
| 34 |
bysteel | bysteel fsbysteel.pt
A steel transformation company, part of dstgroup, with autonomy to serve national builders Involved in construction projects throughout the country |
160 |
| 35 |
Grupo ABB - Alexandre Barbosa Borgesabborges.pt
The group specializes in various sectors including infrastructure, landscaping, construction, real estate, waste management, and more Known for financial strength, innovation, quality, and client commitment |
158 |
| 36 |
MAP Engenharia e Construçãomapengenhariaeconstrucao.pt
Established in 2013, this construction company specializes in private sector projects, aiming to simplify the construction process through trust, quality, and innovation Operating nationally and planning for international expansion |
157 |
| 37 |
Megawatts Nigeria Limitedmegawattsng.com
An infrastructure solutions provider specializing in MEP engineering services, focusing on innovative electro-mechanical customer solutions for construction developments within and outside Nigeria |
157 |
| 38 |
TECNORÉM - Engenharia e Construções, S.A.tecnorem.pt
A construction and public works company established in 1989, specializing in various sectors like education, health, and infrastructure with a focus on experience, innovation, and teamwork |
153 |
| 39 |
Cataricatarigroup.com
A manufacturer with over 40 years of experience in developing scaffold solutions, specializing in metalworking and aiming to provide worldwide scaffolding solutions |
152 |
| 40 | 152 | |
| 41 |
Hilti Portugalhilti.pt
A global company with 32,000 employees in over 120 countries, providing sustainable solutions for construction projects through innovative technologies and personalized customer support |
135 |
| 42 | 108 | |
| 43 |
Signinum, Gestão de Património Culturalsigninum.pt
A team of specialized professionals preserving and restoring historical landmarks, churches, museums, and hotels, while promoting awareness and appreciation of cultural heritage |
43 |
| 44 |
Leais & Oliveira Ldaelio.pt
Established in February 1986, specializing in high-quality precast concrete products, company now focuses on modernization of production processes and product design |
14 |
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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 9, 2026.
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