# 50 leading professional services firms in Portugal

Tamtam tracks 91 professional services firms headquartered in Portugal. This list ranks the 50 largest by number of employees on LinkedIn, led by Escritório de Advocacia, Accenture Portugal and GMS. Their median headcount is 572. Half of them were founded in 1998 or later. The most common headquarters are Lisbon (32), Porto (4) and Matosinhos (2).

These professional services firms in Portugal are primarily large organizations, many with a global presence. They offer a broad spectrum of services, including IT consulting, business advisory, and legal counsel. Noteworthy companies include Accenture Portugal, a global professional services company focused on digital innovation, and Critical Software, which engineers transformative technologies across various sectors.

The companies listed show a strong concentration of headquarters in Lisbon, indicating the capital city's role as a central hub for professional services. Other significant locations include Montijo, Coimbra, and Oeiras. The founding dates suggest a mix of long-established firms like KPMG Portugal, founded in 1965, and more recent entrants such as + Vendas, founded in 2019.

🇵🇹 Portugal · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Escritório de Advocacia](https://www.tamtam.ai/c/escritorio-de-advocacia-montijo) (bcadvogados.pt)<br>Law office providing legal counsel and business advisory services | Legal Services | 🇵🇹 Montijo | 3,641 | 2011 |
| 2 | [Accenture Portugal](https://www.tamtam.ai/c/accenture-portugal) (accenture.com)<br>A global professional services company focusing on digital innovation, optimizing operations, driving revenue growth, and enhancing citizen services for organizations worldwide | IT Services and IT Consulting | 🇵🇹 Lisbon | 2,316 | 1990 |
| 3 | [GMS](https://www.tamtam.ai/c/gms) (maksen.com)<br>Provides strategic, business, and IT consulting, technology solutions, engineering services, and outsourcing for various business needs and operations. | IT Services and IT Consulting | 🇵🇹 Lisbon | 2,105 | 2003 |
| 4 | [+ Vendas](https://www.tamtam.ai/c/vendas) (maisvendas.pt)<br>A +Vendas offers professional solutions for critical business areas, specializing in sales impact through commercial and marketing, HR training, organizational management, and investment projects | Business Consulting and Services | 🇵🇹 Leiria | 1,975 | 2019 |
| 5 | [PwC Portugal](https://www.tamtam.ai/c/pwc-portugal) (pwc.pt)<br>Global network providing quality auditing, consulting, and tax services in 152 countries with over 328,000 employees across various offices Led by experienced Territory Leadership Team | Business Consulting and Services | 🇵🇹 Lisbon | 1,901 |  |
| 6 | [Deloitte Portugal](https://www.tamtam.ai/c/deloitte-portugal) (deloitte.pt)<br>Global network of professionals providing audit, business consulting, financial advisory, risk management, tax services, across various industries, focusing on client needs and excellence | Management Consulting | 🇵🇹 Lisbon | 1,654 |  |
| 7 | [KPMG Portugal](https://www.tamtam.ai/c/kpmg-portugal) (kpmg.com)<br>Global professional services firm offering Audit, Tax, and Advisory services in 143 countries, with expertise and innovation to deliver real results | Business Consulting and Services | 🇵🇹 Lisbon | 1,498 | 1965 |
| 8 | [Critical Software](https://www.tamtam.ai/c/critical-software) (criticalsoftware.com)<br>This company engineers transformative technologies in aerospace, transport, energy, healthcare, and finance, with a focus on sustainability and social impact | IT Services and IT Consulting | 🇵🇹 Coimbra | 1,355 | 1998 |
| 9 | [ISQ](https://www.tamtam.ai/c/isq) (isq.pt)<br>Delivers integrated, innovative solutions supporting customers in risk reduction, operational efficiency improvement, and competitiveness increase through engineering, inspection, tests, and training. | Research Services | 🇵🇹 Oeiras | 1,190 | 1965 |
| 10 | [Randstad Portugal](https://www.tamtam.ai/c/randstad-portugal) (randstad.pt)<br>Global human resources leader managing daily operations for thirty thousand workers across Portugal through local branches, contact centers, and specialized inhouse recruitment locations. | Human Resources Services | 🇵🇹 Lisbon | 1,165 | 1960 |
| 11 | [Grupo Rumos](https://www.tamtam.ai/c/grupo-rumos) (rumos.pt)<br>A business group specializing in training, professional certification, HR and IT services, and education in Portugal, Spain, Angola, and Mozambique | IT Services and IT Consulting | 🇵🇹 Lisboa (Lisbon | 1,161 | 1992 |
| 12 | [B2B](https://www.tamtam.ai/c/b2b) (b2b.com.pt)<br>This B2B company offers expertise in critical areas such as IT, accounting, human capital management, credit control, and payment management to help businesses thrive | Business Consulting and Services | 🇵🇹 Amadora | 1,124 |  |
| 13 | [Mecwide](https://www.tamtam.ai/c/mecwide) (mecwide.com)<br>A leading provider of specialized construction and maintenance services for the Metalworking Industry Sector, with a focus on innovation, quality, and safety | Engineering Services | 🇵🇹 Barcelos | 918 | 2009 |
| 14 | [Aubay Portugal](https://www.tamtam.ai/c/aubay-portugal) (aubay.pt)<br>Aubay provides technology consulting and modernization services with innovation at its core, offering customized solutions for IT needs and resource management | IT Services and IT Consulting | 🇵🇹 Lisbon | 784 | 2007 |
| 15 | [EGOR](https://www.tamtam.ai/c/egor) (egor.pt)<br>Specialized HR management group with over 30 years of experience offering consulting, training, recruitment, outsourcing, and temporary work services with a focus on ethics and excellence | Human Resources Services | 🇵🇹 Lisbon | 767 | 1986 |
| 16 | [Link](https://www.tamtam.ai/c/link-lisboa) (linkconsulting.com)<br>Provider of technology solutions for various industries globally, with a focus on Information and Communication Technologies, serving national and international clients | IT Services and IT Consulting | 🇵🇹 Lisbon | 761 | 1998 |
| 17 | [Talenter](https://www.tamtam.ai/c/talenter) (talenter.com)<br>Specializing in connecting people's talents with the job market needs, the company aims to empower individuals and support businesses in talent discovery and development | Human Resources Services | 🇵🇹 Lisbon | 734 | 1999 |
| 18 | [Timestamp](https://www.tamtam.ai/c/timestamp) (timestampgroup.com)<br>Specialized technology integrator, developing integrated systems for organizations worldwide Leading Oracle solutions provider in Iberia, with expertise in complex, scalable projects since 2003 | IT Services and IT Consulting | 🇵🇹 Lisbon | 730 | 2003 |
| 19 | [Quadrante](https://www.tamtam.ai/c/quadrante) (quadranteglobal.com)<br>Global engineering and architecture consultancy group providing high value services in various sectors worldwide, emphasizing trust, design, delivery, and added value to clients | Design Services | 🇵🇹 Alfragide | 715 | 1998 |
| 20 | [Clan](https://www.tamtam.ai/c/clan) (clan.pt)<br>The first 100% digital employment solution for candidates and employees, created by Multipessoal Join us at clanpt | Human Resources Services | 🇵🇹 Lisbon | 681 | 1993 |
| 21 | [RHmais](https://www.tamtam.ai/c/rhmais) (rhmais.pt)<br>A Portuguese company founded in 1987, providing Human Resources services to major Portuguese companies, state entities, and SMEs Awarded for employee satisfaction | Human Resources Services | 🇵🇹 Lisbon | 679 | 1987 |
| 22 | [Magma Studio](https://www.tamtam.ai/c/magma-studio) (magmastudio.pt)<br>A boutique specializing in employer branding, assisting large organizations in defining talent management strategies and initiatives Passionate about education, offering career accelerators and training programs | Staffing and Recruiting | 🇵🇹 Lisbon | 646 |  |
| 23 | [Companhia Própria](https://www.tamtam.ai/c/companhia-propria) (companhiapropria.pt)<br>The company aims to enhance knowledge and skills for individuals and organizations through innovative solutions and education projects in Portuguese-speaking markets | Business Consulting and Services | 🇵🇹 Lisbon | 585 | 1997 |
| 24 | [afaplan](https://www.tamtam.ai/c/afaplan) (afaplan.com)<br>An experienced group providing management and engineering solutions for construction projects across 4 continents, with offices in Portugal, Brazil, Mozambique, and Angola | Civil Engineering | 🇵🇹 Vila Nova de Gaia | 579 | 1985 |
| 25 | [VdA Vieira de Almeida](https://www.tamtam.ai/c/vda-vieira-de-almeida) (vda.pt)<br>Leader in corporate legal services with over 40 years of international experience, offering specialized solutions in multiple industries and practice areas | Law Practice | 🇵🇹 Lisbon | 572 |  |
| 26 | [CEiiA // Centre of Engineering and Product Development](https://www.tamtam.ai/c/ceiia-centre-of-engineering-and-product-development) (ceiia.com)<br>An Engineering and Product Development Center in Portugal creating sustainable technologies and products through collaboration with cities, industry, and universities | Research Services | 🇵🇹 Matosinhos | 564 | 1999 |
| 27 | [Adecco Permanent Recruitment](https://www.tamtam.ai/c/adecco-permanent-recruitment) (adecco.com)<br>Adecco Specialized Recruitment connects top talent with companies through strategic, efficient, and rigorous recruitment processes in various specialized sectors | Human Resources Services | 🇵🇹 Lisbon | 521 | 2017 |
| 28 | [INEGI driving science & innovation](https://www.tamtam.ai/c/inegi-driving-science-and-innovation) (inegi.pt)<br>Organisation devoted to carry out research and technology-based innovation activities, technology transfer, consulting and technological services. | Research Services | 🇵🇹 Porto | 520 | 1986 |
| 29 | [Mindera - Portugal](https://www.tamtam.ai/c/mindera-portugal) (mindera.com)<br>A global software engineering company that creates web and mobile applications with a focus on collaboration, self-organization, and delivering high-performance solutions for clients worldwide | Software Development | 🇵🇹 Porto | 519 | 2014 |
| 30 | [Softinsa](https://www.tamtam.ai/c/softinsa) (softinsa.pt)<br>A specialized company with 22 years of experience in application and infrastructure management, development services, and a team of over 1000 professionals | IT Services and IT Consulting | 🇵🇹 Lisbon | 517 | 1998 |
| 31 | [Neyond](https://www.tamtam.ai/c/neyond) (neyond.pt)<br>Established in 2004, Neyond provides business and IT consulting services, strategic business process outsourcing in various areas, and serves national and multinational clients globally | Business Consulting and Services | 🇵🇹 Lisbon | 509 | 2004 |
| 32 | [Neotalent Conclusion](https://www.tamtam.ai/c/neotalent-conclusion) (neotalentconclusion.com)<br>A leading Iberian specialist in IT and engineering services, focused on digital transformation through specialized talent for ambitious projects | IT Services and IT Consulting | 🇵🇹 Lisbon | 496 | 1998 |
| 33 | [PLMJ](https://www.tamtam.ai/c/plmj) (plmj.com)<br>Portugal's largest law organization with extensive global reach and specialized teams providing high-quality legal services across various industries and countries | Law Practice | 🇵🇹 Lisbon | 486 | 1967 |
| 34 | [Vincit](https://www.tamtam.ai/c/vincit) (vincit.com)<br>Global experts driving businesses forward through digital technology Award-winning workplace Listed on Nasdaq Focus on practical solutions for success | IT Services and IT Consulting | 🇵🇹 Finland \| USA \| Sweden \| Poland \| Portugal | 470 | 2007 |
| 35 | [Abreu Advogados](https://www.tamtam.ai/c/abreu-advogados) (abreuadvogados.com)<br>Innovative and diverse team breaking barriers by fostering transparent conversations, matching specialists to clients' needs, and staying ahead through innovation | Law Practice | 🇵🇹 Lisbon | 470 | 1993 |
| 36 | [Geocontrole](https://www.tamtam.ai/c/geocontrole) (geocontrole.com)<br>A leading geotechnical player in Portugal offering ground investigation, laboratory testing, consultancy services, and exclusive technologies in the market | Civil Engineering | 🇵🇹 Lisbon | 462 | 1975 |
| 37 | [Grupo Conceito](https://www.tamtam.ai/c/grupo-conceito-lisbon) (conceito.pt)<br>This organization provides outsourcing services in accounting, taxes, consultancy, payroll, treasury, and management support, with global reach and solid client relationships | Outsourcing and Offshoring Consulting | 🇵🇹 Lisbon | 442 | 1982 |
| 38 | [COBA - Engineering and Environmental Consultants](https://www.tamtam.ai/c/coba-engineering-and-environmental-consultants) (cobagroup.com)<br>Multinational engineering and environmental consultants. Provides engineering consultancy services, project management, and supervision globally since 1962. | Engineering Services | 🇵🇹 Lisbon | 432 | 1962 |
| 39 | [Affinity](https://www.tamtam.ai/c/affinity-lisboa) (affinity.pt)<br>Consulting company providing IT outsourcing, nearshoring services, and HR-oriented product development with a global presence and community focus. | IT Services and IT Consulting | 🇵🇹 Lisbon | 425 | 2012 |
| 40 | [Algartempo, Empresa de Trabalho Temporário, Lda](https://www.tamtam.ai/c/algartempo-empresa-de-trabalho-temporario-lda) (algartempo.pt)<br>A human resources company connecting competent professionals with clients since 1998 Specializing in recruiting, selecting, and matching candidates to client needs for high-quality service | Human Resources Services | 🇵🇹 Quarteira | 419 | 1998 |
| 41 | [InnoWave](https://www.tamtam.ai/c/innowave) (innowave.tech)<br>A global technology and consulting company focused on disrupting digital experiences, accelerating enterprise transformation, and optimizing application development & operations to change lives through innovation | IT Services and IT Consulting | 🇵🇹 Lisbon | 416 | 2008 |
| 42 | [Decskill](https://www.tamtam.ai/c/decskill) (decskill.com)<br>Provides technology solutions, specializing in nearshoring, software development, quality assurance, data analytics, cloud, DevOps, and AI to empower digital transformation. | IT Services and IT Consulting | 🇵🇹 Lisbon | 416 |  |
| 43 | [IEP - Instituto Electrotécnico Português](https://www.tamtam.ai/c/iep-instituto-electrotecnico-portugues) (iep.pt)<br>Established in 1981, the company provides innovative and high-quality technological solutions in areas such as inspection, auditing, training, and consulting across various sectors | Business Consulting and Services | 🇵🇹 Matosinhos | 409 | 1981 |
| 44 | [TELLES](https://www.tamtam.ai/c/telles) (telles.pt)<br>Portuguese law experts providing high-quality legal advice to a diverse range of clients, focusing on delivering simple and effective solutions | Legal Services | 🇵🇹 Porto | 409 | 1936 |
| 45 | [CONKORD](https://www.tamtam.ai/c/conkord) (conkord.com)<br>A Lisbon-based IT consultancy focused on excellence and knowledge, hiring individuals who love learning, technology, and helping businesses grow | IT Services and IT Consulting | 🇵🇹 Porto | 408 | 2015 |
| 46 | [INTERPREV](https://www.tamtam.ai/c/interprev) (interprev.pt)<br>A Portuguese company specializing in professional, food, and environmental risk prevention through services such as workplace safety, food safety, training, and pest control | Hospitals and Health Care | 🇵🇹 Lisbon | 401 | 2004 |
| 47 | [TPF - CONSULTORES DE ENGENHARIA E ARQUITETURA, S.A.](https://www.tamtam.ai/c/tpf-consultores-de-engenharia-e-arquitetura-s-a) (tpf.pt)<br>Providing fully integrated Engineering and Architectural services, certified and recognized for quality, focusing on sustainable projects in various sectors | Engineering Services | 🇵🇹 Lisbon | 396 | 1980 |
| 48 | [Sinfic](https://www.tamtam.ai/c/sinfic) (sinfic.com)<br>The company provides IT, management, and quality services to enhance the competitiveness of organizations in Portuguese and Spanish-speaking countries through positive partnerships and client-focused solutions | IT Services and IT Consulting | 🇵🇹 Amadora | 380 | 1990 |
| 49 | [Closer Consulting](https://www.tamtam.ai/c/closer-consulting) (closer.pt)<br>A data science company specializing in business intelligence, advanced analytics, and artificial intelligence, with expertise across various industries and a commitment to research and development | IT Services and IT Consulting | 🇵🇹 Lisbon | 380 | 2006 |
| 50 | [VILT](https://www.tamtam.ai/c/vilt) (vilt-group.com)<br>Specializing in digital transformation, our focus is on improving customer experiences and operational efficiency globally through digital solutions, data integration, and advanced analytics | IT Services and IT Consulting | 🇵🇹 Lisbon | 375 | 2002 |

## 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 Portugal

- [The largest companies in Portugal](https://www.tamtam.ai/l/largest-companies-portugal) (1,725)
- [Multinational companies in Portugal](https://www.tamtam.ai/l/multinational-companies-portugal) (427)
- [Public sector organisations in Portugal](https://www.tamtam.ai/l/public-sector-organisations-portugal) (167)
- [Manufacturers in Portugal](https://www.tamtam.ai/l/manufacturers-portugal) (167)
- [Retail chains in Portugal](https://www.tamtam.ai/l/retail-chains-portugal) (158)
- [Critical infrastructure operators in Portugal](https://www.tamtam.ai/l/critical-infrastructure-operators-portugal) (156)
- [Companies with in-house R&D in Portugal](https://www.tamtam.ai/l/r-and-d-companies-portugal) (154)
- [Education providers in Portugal](https://www.tamtam.ai/l/education-companies-portugal) (135)
- [IT services companies in Portugal](https://www.tamtam.ai/l/it-services-companies-portugal) (128)
- [IT Services and IT Consulting companies in Portugal](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-portugal) (111)
- [Higher Education companies in Portugal](https://www.tamtam.ai/l/higher-education-companies-portugal) (109)
- [Corporate groups and holding companies in Portugal](https://www.tamtam.ai/l/holding-companies-portugal) (99)
- [Software Development companies in Portugal](https://www.tamtam.ai/l/software-development-companies-portugal) (96)
- [Financial services firms in Portugal](https://www.tamtam.ai/l/financial-services-firms-portugal) (95)
- [Companies with a mobile app in Portugal](https://www.tamtam.ai/l/companies-with-mobile-app-portugal) (94)
- [Healthcare providers in Portugal](https://www.tamtam.ai/l/healthcare-providers-portugal) (84)
- [Consulting firms in Portugal](https://www.tamtam.ai/l/consulting-firms-portugal) (79)
- [Research institutes in Portugal](https://www.tamtam.ai/l/research-institutes-portugal) (74)
- [Hospitals and Health Care companies in Portugal](https://www.tamtam.ai/l/hospitals-and-health-care-companies-portugal) (70)
- [SaaS companies in Portugal](https://www.tamtam.ai/l/saas-companies-portugal) (63)
- [Hotel and hospitality groups in Portugal](https://www.tamtam.ai/l/hospitality-groups-portugal) (61)
- [Hardware manufacturers in Portugal](https://www.tamtam.ai/l/hardware-companies-portugal) (60)
- [E-commerce companies in Portugal](https://www.tamtam.ai/l/ecommerce-companies-portugal) (56)
- [Consumer goods companies in Portugal](https://www.tamtam.ai/l/consumer-goods-companies-portugal) (54)

## The same list elsewhere in Portugal

- [Professional services firms in Lisbon](https://www.tamtam.ai/l/professional-services-firms-lisbon) (55)

## The same list elsewhere

- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)
- [Professional services firms in Europe](https://www.tamtam.ai/l/professional-services-firms-in-europe) (13,698)

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Source: https://www.tamtam.ai/l/professional-services-firms-portugal