# The 100 largest IT services companies in Europe

Tamtam tracks 11,376 IT services companies headquartered in Europe. This list ranks the 100 largest by number of employees on LinkedIn, led by Accenture, EY and Capgemini. Their median headcount is 10,768. Half of them were founded in 1987 or later. The most common headquarters are London (10), Madrid (7) and Paris (5).

This selection features large European IT services companies. These firms specialize in areas such as digital transformation, cloud computing, cybersecurity, and business process outsourcing. Notable companies include Accenture, providing professional services for digital transformation, and Capgemini, delivering end-to-end services in strategy, technology, and business operations. EY offers assurance, consulting, and tax services, while Orange is a major telecommunications operator.

The companies listed are primarily large groups, with several exceeding 100,000 employees. A clear pattern is the strong presence of headquarters in major European capitals, such as Paris, London, Dublin, Madrid, and Rome, indicating these cities as key hubs for the IT services industry.

🌍 Europe · 100 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Accenture](https://www.tamtam.ai/c/accenture) (accenture.com)<br>It provides professional services to businesses and governments, focusing on digital transformation, operational optimization, and enhancing citizen services globally. | Business Consulting and Services | 🇮🇪 Dublin | 687,682 |  |
| 2 | [EY](https://www.tamtam.ai/c/ey) (ey.com)<br>A global organization with diverse teams in over 150 countries provides assurance, consulting, law, strategy, tax, and transactions to help clients grow and transform | Professional Services | 🇬🇧 London | 404,207 |  |
| 3 | [Capgemini](https://www.tamtam.ai/c/capgemini-paris) (capgemini.com)<br>Imagine future organizations, making it real with AI, technology, and people, delivering end-to-end services and solutions across strategy, technology, design, engineering and business operations | IT Services and IT Consulting | 🇫🇷 Paris | 342,989 |  |
| 4 | [TP](https://www.tamtam.ai/c/tp-paris) (tp.com)<br>Provides digital business services, modernized and empathetic, prepared for the future in the AI era with intelligent solutions. | Outsourcing and Offshoring Consulting | 🇫🇷 Paris | 229,240 | 1978 |
| 5 | [Allianz Services](https://www.tamtam.ai/c/allianz-services) (careers.allianz.com)<br>Provides specialized core insurance operations, shared services, business analytics, engineering, and management consulting to drive client experience within a global insurance group. | Financial Services | 🇩🇪 Munich | 159,000 |  |
| 6 | [Orange](https://www.tamtam.ai/c/orange-issy-les-moulineaux) (orange.com)<br>A leading global telecommunications operator offering services to millions of customers and multinational companies across 26 countries | Telecommunications | 🇫🇷 Issy-les-Moulineaux | 146,935 |  |
| 7 | [FUJITSU](https://www.tamtam.ai/c/fujitsu) (global.fujitsu)<br>Leading global information and communication technology company, offering technology products, solutions, and services, connecting people, technology, and ideas for a sustainable world. | IT Services and IT Consulting | 🇬🇧 | 124,000 | 1935 |
| 8 | [Atos](https://www.tamtam.ai/c/atos) (atos.net)<br>Provides tailored AI-powered, end-to-end solutions for all industries, specializing in cybersecurity, cloud, and high-performance computing, fostering a secure, decarbonized future. | IT Services and IT Consulting | 🇫🇷 95877 Bezons | 85,294 |  |
| 9 | [Konecta](https://www.tamtam.ai/c/konecta-madrid) (konecta.com)<br>Global provider of customer management outsourcing, offering acquisition, retention, support, and collections across multiple industries with advanced digital technologies. | Outsourcing and Offshoring Consulting | 🇪🇸 Madrid | 56,399 |  |
| 10 | [Almaviva Group](https://www.tamtam.ai/c/almaviva-group) (almavivagroup.com)<br>Provides digital innovation and ICT solutions globally, supporting business model transformation and competitiveness across public and private sectors. | IT Services and IT Consulting | 🇮🇹 Rome | 52,112 | 2005 |
| 11 | [Sopra Steria](https://www.tamtam.ai/c/sopra-steria) (soprasteria.com)<br>Offers consulting, digital services, and solutions, assisting large companies and organizations with digital transformation, improving competitiveness through technology and collaboration. | IT Services and IT Consulting | 🇫🇷 Paris | 47,609 |  |
| 12 | [Minsait](https://www.tamtam.ai/c/minsait) (minsait.com)<br>A leading Spanish technological consultant operating globally, leveraging cloud, security, payments, and innovative technology to drive business and societal impact #MoreMinsait | IT Services and IT Consulting | 🇪🇸 Alcobendas | 45,000 | 2016 |
| 13 | [Capgemini Engineering](https://www.tamtam.ai/c/capgemini-engineering) (capgemini.com)<br>Engineering R&D services, combining broad industry knowledge and cutting-edge digital and software technologies to accelerate clients' journey towards Intelligent Industry. | Engineering Services | 🇫🇷 Paris | 44,836 |  |
| 14 | [Indra Group](https://www.tamtam.ai/c/indra-group) (indragroup.com)<br>Leading multinational providing defense, space, air traffic management, and mobility solutions alongside information technology services, artificial intelligence, cybersecurity, and advanced digital transformation projects. | Defense and Space Manufacturing | 🇪🇸 Madrid | 39,308 |  |
| 15 | [ALTEN](https://www.tamtam.ai/c/alten) (alten.com)<br>Provides engineering and IT services, supporting businesses in technological and sustainable transformation across various industries with high-level consultant-engineers. | Engineering Services | 🇫🇷 Boulogne-Billancourt | 38,710 | 1988 |
| 16 | [Serco](https://www.tamtam.ai/c/serco-hook) (serco.com)<br>Innovative solutions for global challenges in justice, migration, defense, space, health, and transport through service design, program management, and systems integration | IT Services and IT Consulting | 🇬🇧 Hook | 32,618 |  |
| 17 | [NTT DATA Europe & Latam](https://www.tamtam.ai/c/ntt-data-europe-and-latam) (nttdata.com)<br>Global IT services provider transforming clients through consulting, solutions, and managed services to enable a confident move into the digital future | IT Services and IT Consulting | 🇪🇸 Madrid | 31,932 |  |
| 18 | [Orange Business](https://www.tamtam.ai/c/orange-business) (orange-business.com)<br>Leading European network and digital integrator leveraging expertise in next-generation connectivity, cloud, and cybersecurity solutions for positive impact on customers and planet. | IT Services and IT Consulting | 🇫🇷 Paris | 28,626 |  |
| 19 | [VINCI Energies](https://www.tamtam.ai/c/vinci-energies) (vinci-energies.com)<br>Contributes to environmental transition by implementing customized multi-technical solutions from design to maintenance, enhancing infrastructure reliability, efficiency, and sustainability for energy and digital sectors. | IT Services and IT Consulting | 🇫🇷 Nanterre | 25,848 |  |
| 20 | [Capita](https://www.tamtam.ai/c/capita) (capita.com)<br>A leading provider of business services using data, technology, and people to simplify connections between governments, citizens, businesses, and customers | IT Services and IT Consulting | 🇬🇧 London | 25,581 | 1984 |
| 21 | [Amadeus](https://www.tamtam.ai/c/amadeus) (amadeus.com)<br>A company revolutionizing the travel industry by inspiring innovation, partnerships, and responsibility, connecting the travel ecosystem and promoting social and environmental good | IT Services and IT Consulting | 🇪🇸 Madrid | 23,625 | 1987 |
| 22 | [Nagarro](https://www.tamtam.ai/c/nagarro) (nagarro.com)<br>Innovative digital engineering company guiding clients to embrace human-centric, digital-first strategies for responsive, efficient, creative, and sustainable business growth | IT Services and IT Consulting | 🇩🇪 Munich | 22,553 |  |
| 23 | [Inetum](https://www.tamtam.ai/c/inetum) (inetum.com)<br>European digital services leader helping businesses, public sector, and society with digital impact, performance, and innovation, partnering with major software publishers. | IT Services and IT Consulting | 🇫🇷 Saint-Ouen | 21,788 | 1970 |
| 24 | [VOIS](https://www.tamtam.ai/c/vois) (voiscentre.com)<br>Global strategic arm of Vodafone, creating value and efficiency across 28 countries through talent, technology, and transformation for business outcomes | IT Services and IT Consulting | 🇬🇧 London | 20,863 |  |
| 25 | [Majorel](https://www.tamtam.ai/c/majorel) (fr.linkedin.com)<br>Providing advanced, digitally-powered business services to help global brands streamline operations sustainably and deliver critical solutions worldwide. | Outsourcing and Offshoring Consulting | 🇱🇺 Luxembourg | 20,304 | 1978 |
| 26 | [Computacenter](https://www.tamtam.ai/c/computacenter) (computacenter.com)<br>A leading technology and services provider, trusted by large organizations, helping customers manage and transform their technology infrastructure for digital transformation | IT Services and IT Consulting | 🇬🇧 Hatfield | 20,070 | 1981 |
| 27 | [The Adecco Group](https://www.tamtam.ai/c/the-adecco-group) (adeccogroup.com)<br>Global talent company providing employability, digital and engineering solutions, and workforce optimization across multiple industries and countries. | Human Resources Services | 🇨🇭 Zurich | 19,418 |  |
| 28 | [IGT Solutions](https://www.tamtam.ai/c/igt-solutions) (igtsolutions.com)<br>Provides comprehensive customer experience and digital transformation services primarily to the travel and hospitality industry, including consulting, technology, and operations. | IT Services and IT Consulting | 🇫🇷 Gurugram | 18,212 | 1998 |
| 29 | [Reply](https://www.tamtam.ai/c/reply) (reply.com)<br>Specializing in innovative solutions using AI, big data, and digital media, this company delivers consulting and digital services across various sectors globally | IT Services and IT Consulting | 🇮🇹 Turin | 17,188 | 1996 |
| 30 | [Swisscom](https://www.tamtam.ai/c/swisscom) (swisscom.ch)<br>Leading technology company focusing on inspiring people in the connected world, shaping the future with latest innovations and technologies through trustworthy, committed, and curious actions | IT Services and IT Consulting | 🇨🇭 Worblaufen | 15,615 | 1998 |
| 31 | [Luxoft](https://www.tamtam.ai/c/luxoft) (luxoft.com)<br>A global digital strategy and software engineering firm, part of DXC Technology, offering bespoke technology solutions to drive business innovation worldwide | IT Services and IT Consulting | 🇨🇭 Zug | 15,420 |  |
| 32 | [Bechtle](https://www.tamtam.ai/c/bechtle) (bechtle.com)<br>A leading IT provider in Europe, offering IT infrastructure solutions to over 70,000 customers in various sectors with 85 system houses across 14 countries | IT Services and IT Consulting | 🇩🇪 Neckarsulm | 15,000 | 1983 |
| 33 | [Expleo Group](https://www.tamtam.ai/c/expleo-group) (expleo.com)<br>Global provider partners with organisations to guide business transformation, achieve operational excellence, and future-proof businesses through engineering, technology, and consulting services. | IT Services and IT Consulting | 🇫🇷 Saint Quentin en Yvelines | 14,116 | 1966 |
| 34 | [GFT Technologies](https://www.tamtam.ai/c/gft-technologies) (gft.com)<br>Design advanced data, AI transformation solutions, modernize tech architectures, and develop next-gen core systems for industry leaders globally. | IT Services and IT Consulting | 🇩🇪 Stuttgart | 13,400 | 1987 |
| 35 | [Proximus Group](https://www.tamtam.ai/c/proximus-group) (proximus.com)<br>Provider of connectivity and digital services in Benelux and global markets, investing in networks, digital ecosystems, and innovative communication solutions. | Telecommunications | 🇧🇪 Brussels | 13,297 |  |
| 36 | [NTT DATA Business Solutions](https://www.tamtam.ai/c/ntt-data-business-solutions) (nttdata-solutions.com)<br>A global consultancy firm specializing in driving innovation and improving SAP solutions for businesses to transform, grow, and succeed | IT Services and IT Consulting | 🇩🇪 Bielefeld | 12,858 | 1989 |
| 37 | [SPIE](https://www.tamtam.ai/c/spie) (spie.com)<br>Offers multi-technical services for energy and communications, assisting clients with designing, building, operating, and maintaining energy-efficient, environmentally-friendly facilities and infrastructure. | Environmental Services | 🇫🇷 Cergy Pontoise Cedex | 12,741 | 1900 |
| 38 | [Tieto](https://www.tamtam.ai/c/tieto) (tieto.com)<br>Providing software and technology consulting services focused on creating lasting impact and delivering effective solutions for clients. | Technology, Information and Internet | 🇫🇮 | 12,353 | 1968 |
| 39 | [Bechtle Schweiz AG](https://www.tamtam.ai/c/bechtle-schweiz-ag) (bechtle.com)<br>Leading IT service provider for SMEs, large customers, and public institutions, offering consulting, infrastructure, cloud, services, and software solutions throughout the entire IT life cycle. | IT Services and IT Consulting | 🇨🇭 Mägenwil | 12,000 | 1983 |
| 40 | [SoftwareOne](https://www.tamtam.ai/c/softwareone) (softwareone.com)<br>Global provider of software and cloud solutions, specializing in migration, modernization, and optimization for clients worldwide Headquartered in Switzerland | IT Services and IT Consulting | 🇨🇭 Stans | 11,985 |  |
| 41 | [Keywords Studios](https://www.tamtam.ai/c/keywords-studios) (keywordsstudios.com)<br>A leading creative services provider for the global video games industry, offering end-to-end solutions and support across all aspects of game development | Computer Games | 🇮🇪 Dublin | 11,828 | 1998 |
| 42 | [Engineering Group](https://www.tamtam.ai/c/engineering-group) (eng.it)<br>Leading digital transformation company with global presence, specializing in innovation, proprietary solutions, R&D, and diverse market expertise. | IT Services and IT Consulting | 🇮🇹 Rome | 11,815 | 1980 |
| 43 | [Allianz Technology](https://www.tamtam.ai/c/allianz-technology) (careers.allianz.com)<br>Global IT service provider delivering infrastructure, applications, and digital solutions to optimize and innovate Allianz's customer experience worldwide. | IT Services and IT Consulting | 🇩🇪 Unterföhring | 11,708 | 2010 |
| 44 | [Altran](https://www.tamtam.ai/c/altran) (capgemini-engineering.com)<br>Altran, now Capgemini Engineering, offers engineering services Follow them on LinkedIn for updates and insights | IT Services and IT Consulting | 🇫🇷 Neuilly-sur-Seine | 11,652 |  |
| 45 | [PwC Deutschland](https://www.tamtam.ai/c/pwc-deutschland) (pwc.de)<br>A leading auditing and consulting firm in Germany, offering services worldwide with expertise in assurance, tax, legal, deals, and strategy advisory | Business Consulting and Services | 🇩🇪 Frankfurt | 11,566 |  |
| 46 | [SEGULA Technologies](https://www.tamtam.ai/c/segula-technologies) (segulatechnologies.com)<br>Provides global engineering services across major industrial sectors, committed to innovation, from research to industrialization and production. | Engineering Services | 🇫🇷 Nanterre | 11,442 |  |
| 47 | [Ayesa](https://www.tamtam.ai/c/ayesa) (ayesa.com)<br>Global provider of technology and engineering services with expertise in digital solutions, infrastructure design, and supervision for private and public sectors worldwide | Business Consulting and Services | 🇪🇸 Seville | 11,405 | 1966 |
| 48 | [Eviden](https://www.tamtam.ai/c/eviden) (eviden.com)<br>Eviden is a global leader in digital transformation, offering expertise in digital, cloud, data, advanced computing, and security solutions to industries worldwide | IT Services and IT Consulting | 🇫🇷 Bezons | 10,793 |  |
| 49 | [Sogeti](https://www.tamtam.ai/c/sogeti) (sogeti.com)<br>Helps organizations with technology solutions, implements innovation quickly, focuses on quality engineering, cloud, application development through AI, data, and automation. | IT Services and IT Consulting | 🇫🇷 Paris | 10,781 | 1967 |
| 50 | [T-Systems International](https://www.tamtam.ai/c/t-systems-international) (t-systems.com)<br>Provides end-to-end IT solutions, cloud migration, and industry-specific digital transformation services with strong security and global presence. | IT Services and IT Consulting | 🇩🇪 Frankfurt | 10,768 | 2000 |
| 51 | [NETWORK-SECURITY-SOLUTIONS](https://www.tamtam.ai/c/network-security-solutions) (n-security.com)<br>Specializing in managing Linux/Unix servers and large network environments with a focus on customized solutions, quality, and technological innovation | Computer and Network Security | 🇵🇱 Poznań | 10,400 | 2010 |
| 52 | [Porsche Holding](https://www.tamtam.ai/c/porsche-holding) (porsche-holding.com)<br>Largest European automotive distributor operating in 29 countries, specializing in wholesale, retail, financial services, and IT for VW Group brands. | Wholesale | 🇦🇹 Salzburg | 10,334 | 1947 |
| 53 | [Devoteam](https://www.tamtam.ai/c/devoteam) (devoteam.com)<br>AI-driven tech consulting firm specializing in cloud platforms, cyber, data, and sustainability, guiding businesses through sustainable digital transformation to deliver value. | Business Consulting and Services | 🇫🇷 Levallois-Perret | 10,274 |  |
| 54 | [BearingPoint](https://www.tamtam.ai/c/bearingpoint) (bearingpoint.com)<br>Independent consulting firm offering tailored solutions for complex business environments, applying deep industry expertise to help clients achieve their goals globally | Business Consulting and Services | 🇳🇱 Amsterdam | 10,074 | 2002 |
| 55 | [SPIE France](https://www.tamtam.ai/c/spie-france) (spie.fr)<br>Global actor in energy, digital, and industrial transitions, offering concrete solutions for decarbonizing buildings, industries, and territories through various technical services. | IT Services and IT Consulting | 🇫🇷 Cergy-Pontoise | 9,833 |  |
| 56 | [Freelance, Self Employment](https://www.tamtam.ai/c/freelance-self-employment) (google.com)<br>A specialized team of developers and designers working on challenging projects, utilizing Vuejs, Laravel, Tilda, graphic design, illustration, and UI/UX | IT Services and IT Consulting | 🇬🇧 No name | 9,715 |  |
| 57 | [Endava](https://www.tamtam.ai/c/endava) (endava.com)<br>The company leverages technology and expertise to drive innovation and transform businesses with customized digital solutions across industries | IT Services and IT Consulting | 🇬🇧 London | 9,559 | 2020 |
| 58 | [Tietoevry](https://www.tamtam.ai/c/tietoevry) (tieto.com)<br>Creating purposeful technology to reinvent the world for good, focusing on the future of businesses, societies, and humanity | IT Services and IT Consulting | 🇫🇮 Helsinki | 9,343 |  |
| 59 | [SITA](https://www.tamtam.ai/c/sita) (sita.aero)<br>Developing innovative technology solutions that connect airlines, airports, and travelers to improve travel experience and industry efficiency worldwide. | IT Services and IT Consulting | 🇨🇭 Geneva | 9,019 |  |
| 60 | [SCC](https://www.tamtam.ai/c/scc) (scc.com)<br>SCC is a leading IT group in Europe, providing limitless IT solutions, cyber security services, digital workplace solutions, and hybrid infrastructure services | IT Services and IT Consulting | 🇬🇧 Birmingham | 8,687 | 1975 |
| 61 | [NINGUNO](https://www.tamtam.ai/c/ninguno) (siadde.es)<br>A technology company with over 20 years of experience providing comprehensive solutions in security systems, telecommunications, software development, and more for various industries | Telecommunications | 🇪🇸 Madrid | 8,620 | 2026 |
| 62 | [EDAG Group](https://www.tamtam.ai/c/edag-group) (edag.com)<br>Engineering service provider for mobility, defense, industry, and public solutions, developing complex products, systems, and production solutions with an interdisciplinary team. | Engineering Services | 🇩🇪 Wiesbaden | 8,500 | 1969 |
| 63 | [SEIDOR](https://www.tamtam.ai/c/seidor) (seidor.com)<br>Helps clients transform and compete through technology and innovation, focusing on human values, sustainability, and partnering with leading tech innovators globally. | IT Services and IT Consulting | 🇪🇸 Barcelona | 8,352 |  |
| 64 | [Netcompany](https://www.tamtam.ai/c/netcompany) (netcompany.com)<br>Providing agile IT consulting and digital transformation services, delivering scalable, modern technology solutions for large Northern European clients. | IT Services and IT Consulting | 🇩🇰 Copenhagen | 8,266 | 2000 |
| 65 | [IAV GmbH](https://www.tamtam.ai/c/iav-gmbh) (iav.com)<br>Development of sustainable, intelligent, and connected mobility solutions combining automotive engineering and IT expertise for various industries. | Engineering Services | 🇩🇪 Berlin | 8,200 | 1983 |
| 66 | [Capco](https://www.tamtam.ai/c/capco) (capco.com)<br>Global technology and management consultancy specializing in digital transformation, data-driven solutions, and innovation for banking, payments, capital markets, insurance, and energy sectors. | Financial Services | 🇬🇧 London | 8,026 | 1998 |
| 67 | [PwC Italy](https://www.tamtam.ai/c/pwc-italy) (pwc.com)<br>PwC Italia is an organization part of the international PwC network, working with over 8,000 professionals in 24 Italian cities to create trust and solve important issues | Professional Services | 🇮🇹 Milan | 7,793 | 1849 |
| 68 | [Akka Technologies](https://www.tamtam.ai/c/akka-technologies) (akkodis.com)<br>European leader in engineering consulting and R&D services, supporting clients with digital solutions and expertise across various sectors throughout product life cycles. | IT Services and IT Consulting | 🇧🇪 Brussels | 7,700 | 1984 |
| 69 | [OTE Group of Companies (HTO)](https://www.tamtam.ai/c/ote-group-of-companies-hto) (cosmote.gr)<br>A leading technology company in Greece, part of Deutsche Telekom Group, providing a wide range of telecom services and ICT solutions for digital transformation and growth | Telecommunications | 🇬🇷 Athens | 7,648 |  |
| 70 | [Bertrandt Group](https://www.tamtam.ai/c/bertrandt-group) (bertrandt.com)<br>International development service provider specializing in automotive, aerospace, and mechanical engineering Focus on digitalization, e-mobility, and autonomous systems Accelerating technological progress with 14,000 employees globally | Engineering Services | 🇩🇪 Ehningen | 7,532 | 1974 |
| 71 | [Amaris Consulting](https://www.tamtam.ai/c/amaris-consulting) (amaris.com)<br>Independent technology consulting firm providing guidance and solutions to businesses worldwide through a diverse team of experts in various industries Partner of Mantu | IT Services and IT Consulting | 🇨🇭 Geneva | 7,500 | 2007 |
| 72 | [Accenture Italia](https://www.tamtam.ai/c/accenture-italia) (accenture.com)<br>Global professional services firm specializing in digital, cloud, security, strategy, consulting, technology, and operations across multiple industries worldwide. | IT Services and IT Consulting | 🇮🇹 Milan | 7,209 |  |
| 73 | [Econocom](https://www.tamtam.ai/c/econocom) (econocom.com)<br>Supplies, finances, and provides managed services for workplace, audiovisual, and infrastructures, supporting businesses in their digital transformation with equipment and support. | IT Services and IT Consulting | 🇫🇷 Puteaux | 7,123 | 1973 |
| 74 | [Mantu](https://www.tamtam.ai/c/mantu) (mantu.com)<br>Global consulting firm offering leadership, technology, digital marketing, and talent management services to connect companies with leading teams and technology for sustainable success | Business Consulting and Services | 🇨🇭 Chêne-Bourg | 6,905 |  |
| 75 | [Varias](https://www.tamtam.ai/c/varias-rotterdam) (varias.io)<br>Varias offers autonomous and dedicated teams to help later-stage startups scale faster, focusing on sustainable growth to make a lasting impact | Software Development | 🇳🇱 Rotterdam | 6,820 | 2019 |
| 76 | [Tieto](https://www.tamtam.ai/c/tieto-helsinki) (tietoevry.com)<br>The company focuses on leveraging data-driven opportunities to create value for individuals, businesses, and society through software, services, and co-innovation | IT Services and IT Consulting | 🇫🇮 Helsinki | 6,730 | 1968 |
| 77 | [Actemium](https://www.tamtam.ai/c/actemium) (actemium.com)<br>Delivering bespoke solutions and services globally, combining local business unit expertise to create value throughout the industrial life cycle for a sustainable world. | Automation Machinery Manufacturing | 🇫🇷 Nanterre | 6,718 |  |
| 78 | [msg](https://www.tamtam.ai/c/msg) (msg.group)<br>An international company group focusing on people, providing digital solutions with over 40 years of expertise and global presence | IT Services and IT Consulting | 🇩🇪 Ismaning | 6,613 | 1980 |
| 79 | [Libera Professione](https://www.tamtam.ai/c/libera-professione) (gfranchi.it)<br>IT Consulting specializing in client-server application development on FileMaker platform, integrating with various databases such as SQL, Oracle, DB2, AS400, MySql, MS SQL, and MS Access | IT Services and IT Consulting | 🇮🇹 Calenzano | 6,589 |  |
| 80 | [SNEF](https://www.tamtam.ai/c/snef-marseille) (groupesnef.fr)<br>French leader in electrical installation and finishing turnkey project management, offering high/low voltage, industrial processes, HVAC, and maintenance services globally. | Manufacturing | 🇫🇷 Marseille | 6,519 |  |
| 81 | [Toptal](https://www.tamtam.ai/c/toptal) (toptal.com)<br>A network connecting top talent in business, design, and technology to help companies scale teams on demand with impressive growth | Software Development | 🇬🇧 Work from Anywhere | 6,417 | 2010 |
| 82 | [Mastek](https://www.tamtam.ai/c/mastek) (mastek.com)<br>Enterprise digital and cloud transformation partner delivering solutions in digital experience, cloud, data, automation, AI, and managed services globally. | IT Services and IT Consulting | 🇬🇧 Reading | 6,396 |  |
| 83 | [adesso SE](https://www.tamtam.ai/c/adesso-se) (adesso.de)<br>Innovative IT service provider optimizing core business processes with tailored solutions, combining technological expertise with deep industry understanding #GrowTogether #GreatPlacetoWork | IT Services and IT Consulting | 🇩🇪 Dortmund | 6,389 | 1997 |
| 84 | [Sii Poland](https://www.tamtam.ai/c/sii-poland) (sii.pl)<br>Provides technology consulting, AI-driven digital transformation, engineering, and business services, supporting clients in testing, software development, infrastructure management, and system integration. | IT Services and IT Consulting | 🇵🇱 Warsaw | 6,243 | 2006 |
| 85 | [Accenture España](https://www.tamtam.ai/c/accenture-espana) (accenture.com)<br>A global professional services company helping businesses and governments with digital transformation, cloud technology, data analytics, and industry expertise to drive tangible outcomes | Business Consulting and Services | 🇪🇸 Madrid | 6,208 |  |
| 86 | [Qualitest](https://www.tamtam.ai/c/qualitest) (quality-ai.com)<br>Global leader in AI-powered Quality Engineering services, specializing in superior customer experience, accelerated release velocity, and tailored solutions for various industries | IT Services and IT Consulting | 🇬🇧 London | 6,088 | 1997 |
| 87 | [Astek](https://www.tamtam.ai/c/astek) (astekgroup.fr)<br>Supports clients with high-value service, deep technical expertise across technology, operations, and engineering, focusing on sustainable digital transformation with humans at the core. | IT Services and IT Consulting | 🇫🇷 Boulogne-Billancourt | 6,035 | 1988 |
| 88 | [TÜV NORD GROUP](https://www.tamtam.ai/c/tuv-nord-group) (tuev-nord-group.com)<br>Offers global consulting, service, and inspection solutions across diverse sectors including mobility, industrial services, IT, natural resources, and aerospace. | Consumer Services | 🇩🇪 Hanover | 5,960 |  |
| 89 | [Photon](https://www.tamtam.ai/c/photon) (photon.com)<br>A leading digital agency working with Fortune 100 companies, integrating strategy consulting, creative design, and technology to drive digital initiatives at scale | IT Services and IT Consulting | 🇬🇧 London | 5,867 | 2007 |
| 90 | [Libre](https://www.tamtam.ai/c/libre-torino) (libre.digital)<br>Italian digital creative network crafting apps, web-apps, websites, and portals collaboratively since 2003 | IT Services and IT Consulting | 🇮🇹 Turin | 5,712 | 2007 |
| 91 | [iO](https://www.tamtam.ai/c/io) (iodigital.com)<br>iO is a blended agency offering expertise in strategy, creativity, marketing, technology, and data to create relevant brand experiences for clients across industries and countries | Technology, Information and Internet | 🇧🇪 Herentals | 5,704 | 2005 |
| 92 | [Davies](https://www.tamtam.ai/c/davies) (davies-group.com)<br>Specialist professional services and technology firm providing risk management, business process optimization, and digital transformation solutions to insurance, regulated, and global businesses | Insurance | 🇬🇧 London | 5,693 |  |
| 93 | [Orise](https://www.tamtam.ai/c/orise) (orise.com)<br>Industrial process automation specialists focusing on data integration and contextualization to improve productivity, quality, and safety across manufacturing lifecycles for global industries. | Manufacturing | 🇩🇪 Ludwigshafen | 5,523 | 1986 |
| 94 | [KPMG España](https://www.tamtam.ai/c/kpmg-espana) (kpmg.com)<br>Professional services firm providing audit, tax, legal, financial, and business advisory with global expertise and local market knowledge. | Professional Services | 🇪🇸 Madrid | 5,523 |  |
| 95 | [PA Consulting](https://www.tamtam.ai/c/pa-consulting) (paconsulting.com)<br>Global teams of strategists, technologists, and experts deliver innovative solutions across industries to drive transformation and lasting client success. | Business Consulting and Services | 🇬🇧 London | 5,470 |  |
| 96 | [SPS](https://www.tamtam.ai/c/sps) (spsglobal.com)<br>A technology-driven business transformation company offering innovative solutions to empower organizations in adopting hybrid work concepts and drive digital transformation | Outsourcing and Offshoring Consulting | 🇨🇭 Zurich | 5,467 | 1980 |
| 97 | [Shopify Developer](https://www.tamtam.ai/c/shopify-developer) (onder.co.uk)<br>A cloud-based e-commerce platform offering easy setup for online stores and expert development services to enhance advanced features and customer experiences | Software Development | 🇬🇧 London | 5,461 |  |
| 98 | [CRIF](https://www.tamtam.ai/c/crif) (crif.com)<br>Global specialist in credit bureau, business information, outsourcing, and credit solutions Provides reliable data, innovative solutions, and expert knowledge worldwide | IT Services and IT Consulting | 🇮🇹 Bologna | 5,438 |  |
| 99 | [Groupe SII](https://www.tamtam.ai/c/groupe-sii) (sii-group.com)<br>Engineering and digital services company providing innovative solutions to large groups across various sectors, developing new technologies and evolving information systems. | IT Services and IT Consulting | 🇫🇷 Paris | 5,287 | 1979 |
| 100 | [Vulcain Engineering Group](https://www.tamtam.ai/c/vulcain-engineering-group) (vulcain-eng.com)<br>Provides engineering consulting and project solutions for energy and environmental sectors, delivering technical assistance, expertise, and project management globally. | Business Consulting and Services | 🇫🇷 Neuilly-sur-Seine | 5,234 | 2005 |

## 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 Europe

- [The largest companies in Europe](https://www.tamtam.ai/l/largest-companies-in-europe) (213,553)
- [Multinational companies in Europe](https://www.tamtam.ai/l/multinational-companies-in-europe) (42,025)
- [Companies with in-house R&D in Europe](https://www.tamtam.ai/l/r-and-d-companies-in-europe) (20,169)
- [Retail chains in Europe](https://www.tamtam.ai/l/retail-chains-in-europe) (19,259)
- [Manufacturers in Europe](https://www.tamtam.ai/l/manufacturers-in-europe) (18,156)
- [Professional services firms in Europe](https://www.tamtam.ai/l/professional-services-firms-in-europe) (13,698)
- [SaaS companies in Europe](https://www.tamtam.ai/l/saas-companies-in-europe) (13,682)
- [Software Development companies in Europe](https://www.tamtam.ai/l/software-development-companies-in-europe) (12,950)
- [Financial services firms in Europe](https://www.tamtam.ai/l/financial-services-firms-in-europe) (12,943)
- [IT Services and IT Consulting companies in Europe](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-in-europe) (11,705)
- [Hardware manufacturers in Europe](https://www.tamtam.ai/l/hardware-companies-in-europe) (10,565)
- [Family-owned companies in Europe](https://www.tamtam.ai/l/family-owned-companies-in-europe) (9,878)
- [Critical infrastructure operators in Europe](https://www.tamtam.ai/l/critical-infrastructure-operators-in-europe) (9,815)
- [Financial Services companies in Europe](https://www.tamtam.ai/l/financial-services-companies-in-europe) (9,480)
- [Consulting firms in Europe](https://www.tamtam.ai/l/consulting-firms-in-europe) (8,900)
- [Public sector organisations in Europe](https://www.tamtam.ai/l/public-sector-organisations-in-europe) (8,568)
- [Education providers in Europe](https://www.tamtam.ai/l/education-companies-in-europe) (7,925)
- [Companies with a mobile app in Europe](https://www.tamtam.ai/l/companies-with-mobile-app-in-europe) (7,898)
- [Distributors and wholesalers in Europe](https://www.tamtam.ai/l/distributors-and-wholesalers-in-europe) (7,573)
- [Retail companies in Europe](https://www.tamtam.ai/l/retail-companies-in-europe) (6,240)
- [Healthcare providers in Europe](https://www.tamtam.ai/l/healthcare-providers-in-europe) (6,132)
- [E-commerce companies in Europe](https://www.tamtam.ai/l/ecommerce-companies-in-europe) (5,864)
- [Hotel and hospitality groups in Europe](https://www.tamtam.ai/l/hospitality-groups-in-europe) (5,741)
- [Subscription businesses in Europe](https://www.tamtam.ai/l/subscription-businesses-in-europe) (5,640)

## The same list elsewhere

- [IT services companies in the world](https://www.tamtam.ai/l/it-services-companies-in-the-world) (20,934)
- [IT services companies in France](https://www.tamtam.ai/l/it-services-companies-france) (5,000)
- [IT services companies in the United Kingdom](https://www.tamtam.ai/l/it-services-companies-united-kingdom) (1,583)
- [IT services companies in Germany](https://www.tamtam.ai/l/it-services-companies-germany) (776)
- [IT services companies in the Netherlands](https://www.tamtam.ai/l/it-services-companies-netherlands) (585)
- [IT services companies in Belgium](https://www.tamtam.ai/l/it-services-companies-belgium) (551)
- [IT services companies in Italy](https://www.tamtam.ai/l/it-services-companies-italy) (499)
- [IT services companies in Spain](https://www.tamtam.ai/l/it-services-companies-spain) (484)
- [IT services companies in Switzerland](https://www.tamtam.ai/l/it-services-companies-switzerland) (438)
- [IT services companies in Poland](https://www.tamtam.ai/l/it-services-companies-poland) (312)
- [IT services companies in Sweden](https://www.tamtam.ai/l/it-services-companies-sweden) (155)
- [IT services companies in Portugal](https://www.tamtam.ai/l/it-services-companies-portugal) (128)
- [IT services companies in Denmark](https://www.tamtam.ai/l/it-services-companies-denmark) (102)
- [IT services companies in Ukraine](https://www.tamtam.ai/l/it-services-companies-ukraine) (99)
- [IT services companies in Finland](https://www.tamtam.ai/l/it-services-companies-finland) (88)
- [IT services companies in Norway](https://www.tamtam.ai/l/it-services-companies-norway) (78)
- [IT services companies in Ireland](https://www.tamtam.ai/l/it-services-companies-ireland) (77)
- [IT services companies in Austria](https://www.tamtam.ai/l/it-services-companies-austria) (70)
- [IT services companies in Bulgaria](https://www.tamtam.ai/l/it-services-companies-bulgaria) (51)
- [IT services companies in the Czech Republic](https://www.tamtam.ai/l/it-services-companies-czech-republic) (45)
- [IT services companies in Greece](https://www.tamtam.ai/l/it-services-companies-greece) (38)
- [IT services companies in Hungary](https://www.tamtam.ai/l/it-services-companies-hungary) (38)
- [IT services companies in Luxembourg](https://www.tamtam.ai/l/it-services-companies-luxembourg) (37)
- [IT services companies in Lithuania](https://www.tamtam.ai/l/it-services-companies-lithuania) (29)

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Source: https://www.tamtam.ai/l/it-services-companies-in-europe