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List of consulting firms in Europe

Tamtam tracks 8,900 consulting firms 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 14,116. Half of them were founded in 1986 or later. The most common headquarters are London (18), Paris (9) and Madrid (4).

๐ŸŒ Europe100 companiesUpdated Nov 13, 2026

This selection of large European consulting firms includes global leaders in business consulting, IT services, and professional services. Companies like Accenture and EY offer extensive digital transformation and strategic advice, while Capgemini and FUJITSU specialize in IT services and solutions. The list also features major players in financial services such as Allianz Services and WTW, alongside specialized firms like DEKRA in public safety and Atento in outsourcing.

The firms demonstrate a strong presence across various European cities, with multiple headquarters in London, Paris, and Madrid. Many of these companies, including KPMG Italy and Atos, provide a comprehensive suite of services ranging from audit and advisory to cybersecurity and cloud solutions, serving both governments and multinational corporations.

#CompanyIndustryHeadquarters EmployeesFounded
1
Accentureaccenture.com

It provides professional services to businesses and governments, focusing on digital transformation, operational optimization, and enhancing citizen services globally.

Business Consulting and Services ๐Ÿ‡ฎ๐Ÿ‡ช Dublin 687,682 n/a
2
EYey.com

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 ๐Ÿ‡ฌ๐Ÿ‡ง London 404,207 n/a
3
Capgeminicapgemini.com

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 ๐Ÿ‡ซ๐Ÿ‡ท Paris 342,989 n/a
4
KPMG Italykpmg.com

A global professional services network providing audit, advisory, tax, and legal services to businesses worldwide, focusing on building trust and driving change

Business Consulting and Services ๐Ÿ‡ฎ๐Ÿ‡น Milan 265,000 1987
5
Allianz Servicescareers.allianz.com

Provides specialized core insurance operations, shared services, business analytics, engineering, and management consulting to drive client experience within a global insurance group.

Financial Services ๐Ÿ‡ฉ๐Ÿ‡ช Munich 159,000 n/a
6
Atentoatento.com

Leading provider of CRM and BPO services in Latin America and globally, serving multinational corporations in various industries through multiple channels

Outsourcing and Offshoring Consulting ๐Ÿ‡ช๐Ÿ‡ธ Madrid 154,000 1999
7
FUJITSUglobal.fujitsu

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 ๐Ÿ‡ฌ๐Ÿ‡ง 124,000 1935
8
Atosatos.net

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 ๐Ÿ‡ซ๐Ÿ‡ท 95877 Bezons 85,294 n/a
9
WTWwtwco.com

Offering data-driven solutions in people, risk, and capital areas, leveraging global expertise to enhance strategy, resilience, workforce motivation, and performance

Financial Services ๐Ÿ‡ฌ๐Ÿ‡ง London 55,656 n/a
10
Almaviva Groupalmavivagroup.com

Provides digital innovation and ICT solutions globally, supporting business model transformation and competitiveness across public and private sectors.

IT Services and IT Consulting ๐Ÿ‡ฎ๐Ÿ‡น Rome 52,112 2005
11
BDObdo.global

Providing professional services globally with 1800 offices, focusing on quality, technology, and innovative solutions for long-term client value.

Accounting ๐Ÿ‡ง๐Ÿ‡ช Brussels 51,974 n/a
12
DEKRAdekra.com

DEKRA provides expert safety services worldwide, including vehicle inspection, claims services, industrial inspections, training, product certification, and sustainable solutions

Public Safety ๐Ÿ‡ฉ๐Ÿ‡ช Stuttgart 49,000 n/a
13
Sopra Steriasoprasteria.com

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 ๐Ÿ‡ซ๐Ÿ‡ท Paris 47,609 n/a
14
Minsaitminsait.com

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 ๐Ÿ‡ช๐Ÿ‡ธ Alcobendas 45,000 2016
15
Capgemini Engineeringcapgemini.com

Engineering R&D services, combining broad industry knowledge and cutting-edge digital and software technologies to accelerate clients' journey towards Intelligent Industry.

Engineering Services ๐Ÿ‡ซ๐Ÿ‡ท Paris 44,836 n/a
16
Arcadisarcadis.com

delivering transformative projects globally addressing climate, energy, and livable cities through design, engineering, architecture, and consulting for a better future

Professional Services ๐Ÿ‡ณ๐Ÿ‡ฑ Amsterdam 42,295 n/a
17
Mazarsforvismazars.com

Global integrated partnership providing audit, accountancy, advisory, tax, and legal services through fifty thousand professionals across more than one hundred countries worldwide.

Accounting ๐Ÿ‡ซ๐Ÿ‡ท Paris La Defense 42,000 1945
18
Publicis Groupepublicisgroupe.com

Helps clients transform their marketing and digital businesses, providing expertise in communications, media, data, and technology across 100+ countries.

Advertising Services ๐Ÿ‡ซ๐Ÿ‡ท Paris 41,020 n/a
19
ALTENalten.com

Provides engineering and IT services, supporting businesses in technological and sustainable transformation across various industries with high-level consultant-engineers.

Engineering Services ๐Ÿ‡ซ๐Ÿ‡ท Boulogne-Billancourt 38,710 1988
20
ICON plciconplc.com

A global company founded in Ireland in 1990, specializing in accelerating the development of drugs and devices to save lives and improve quality of life

Biotechnology Research ๐Ÿ‡ฎ๐Ÿ‡ช Dublin 35,001 n/a
21
Sercoserco.com

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 ๐Ÿ‡ฌ๐Ÿ‡ง Hook 32,618 n/a
22
NTT DATA Europe & Latamnttdata.com

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 ๐Ÿ‡ช๐Ÿ‡ธ Madrid 31,932 n/a
23
B. Braun Groupbbraun.com

A leading medical technology organization dedicated to protecting and improving global health through innovative solutions and collaborative culture

Medical Equipment Manufacturing ๐Ÿ‡ฉ๐Ÿ‡ช Melsungen 29,535 1839
24
Webhelpwebhelp.com

The company specializes in creating innovative customer journeys using data insights, AI, and human talent to drive growth for brands worldwide

Outsourcing and Offshoring Consulting ๐Ÿ‡ซ๐Ÿ‡ท Paris 27,162 n/a
25
Deutsche Gesellschaft fรผr Internationale Zusammenarbeit (GIZ) GmbHgiz.de

Provides international cooperation for sustainable development and education, helping shape a future worth living worldwide, with over 50 years of experience.

International Trade and Development ๐Ÿ‡ฉ๐Ÿ‡ช Bonn 26,333 n/a
26
Aruparup.com

A global collective of designers and consultants dedicated to sustainable development, collaborating with clients to shape a better world using technology and imagination

Design Services ๐Ÿ‡ฌ๐Ÿ‡ง London 26,193 1946
27
Kantarkantar.com

Global leader in marketing data and analytics with deep expertise, innovative technology, and insights to help clients understand people and drive growth worldwide

Market Research ๐Ÿ‡ฌ๐Ÿ‡ง London 24,976 n/a
28
Mott MacDonaldmottmac.com

The company focuses on improving society through digital innovation, excellence, and solving intricate challenges with clients to deliver better outcomes

Civil Engineering ๐Ÿ‡ฌ๐Ÿ‡ง London 24,653 1989
29
Swecoswecogroup.com

A leading consultancy co-creating sustainable solutions for urban areas through planning, design, and digital innovation with a team of 21,000 specialists

Professional Services ๐Ÿ‡ธ๐Ÿ‡ช Stockholm 22,591 n/a
30
Nagarronagarro.com

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 ๐Ÿ‡ฉ๐Ÿ‡ช Munich 22,553 n/a
31
Inetuminetum.com

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 ๐Ÿ‡ซ๐Ÿ‡ท Saint-Ouen 21,788 1970
32
Majorelfr.linkedin.com

Providing advanced, digitally-powered business services to help global brands streamline operations sustainably and deliver critical solutions worldwide.

Outsourcing and Offshoring Consulting ๐Ÿ‡ฑ๐Ÿ‡บ Luxembourg 20,304 1978
33
AFRYafry.com

A European leader in engineering, design, and advisory services, accelerating the transition to a sustainable society through global expertise in infrastructure, industry, energy, and digitalization

Engineering Services ๐Ÿ‡ธ๐Ÿ‡ช Stockholm 19,737 n/a
34
The Adecco Groupadeccogroup.com

Global talent company providing employability, digital and engineering solutions, and workforce optimization across multiple industries and countries.

Human Resources Services ๐Ÿ‡จ๐Ÿ‡ญ Zurich 19,418 n/a
35
Ipsosipsos.com

Ipsos provides accurate and relevant information to help clients make confident decisions, shaping precise measurement into actionable insights for success

Market Research ๐Ÿ‡ซ๐Ÿ‡ท Paris 19,037 1975
36
Technip Energiesten.com

Leading energy engineering & technology company focused on LNG, hydrogen, ethylene, sustainable chemistry, and CO2 management Committed to accelerating the energy transition globally

Engineering Services ๐Ÿ‡ซ๐Ÿ‡ท Paris 18,645 n/a
37
EY-Parthenoney.com

Multidisciplinary professionals across 120 countries provide actionable corporate, transaction, and turnaround strategies to clients using data analytics and digital capabilities

Business Consulting and Services ๐Ÿ‡ฌ๐Ÿ‡ง London 18,536 n/a
38
Rambollramboll.com

Global company offering sustainable solutions in architecture, engineering, and consultancy across various sectors to create sustainable cities and societies worldwide

Engineering Services ๐Ÿ‡ฉ๐Ÿ‡ฐ Copenhagen 18,506 1945
39
IGT Solutionsigtsolutions.com

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 ๐Ÿ‡ซ๐Ÿ‡ท Gurugram 18,212 1998
40
TรœV SรœDtuvsud.com

Experts provide testing, certification, auditing, and advisory services across various industries, ensuring safety, security, and sustainability for technological advancements and market access.

Public Safety ๐Ÿ‡ฉ๐Ÿ‡ช Munich 18,205 1866
41
Replyreply.com

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 ๐Ÿ‡ฎ๐Ÿ‡น Turin 17,188 1996
42
Capgemini Inventcapgemini.com

Digital innovation, consulting, and transformation services combining strategy, technology, data science, and creative design to help businesses envision and build the future

Business Consulting and Services ๐Ÿ‡ซ๐Ÿ‡ท Paris 17,000 n/a
43
BCD Travelbcdtravel.com

Comprehensive corporate travel management with digital tools, meetings and events services, global consultancy, supporting cost savings and sustainability worldwide.

Travel Arrangements ๐Ÿ‡ณ๐Ÿ‡ฑ Utrecht 16,897 2006
44
Sendirisendiri.nl

Learning and development consultancy specializing in online programs, community support, and guidance to empower individuals and organizations in enhancing skills and knowledge

Professional Training and Coaching ๐Ÿ‡ณ๐Ÿ‡ฑ Eefde 15,445 2018
45
Luxoftluxoft.com

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 ๐Ÿ‡จ๐Ÿ‡ญ Zug 15,420 n/a
46
Egisegis-group.com

An international consultancy specializing in sustainable infrastructure, construction engineering, and mobility services, working towards achieving carbon neutrality and social development globally

Civil Engineering ๐Ÿ‡ซ๐Ÿ‡ท Saint-Quentin-en-Yvelines 15,158 n/a
47
KPMG UKkpmg.com

A leading UK provider of tax, audit, and advisory services with a global presence, focusing on innovative solutions and expertise for clients' needs

Business Consulting and Services ๐Ÿ‡ฌ๐Ÿ‡ง London 15,102 1987
48
Petrofacpetrofac.com

International energy service provider specializing in designing, building, managing, and maintaining oil, gas, refining, and renewable energy infrastructure for leading energy companies worldwide

Engineering Services ๐Ÿ‡ฌ๐Ÿ‡ง London 14,616 1981
49
Cloud Consultingccltng.com

Oversees national education policies, youth programs, and administration to support learning and development across France.

IT Services and IT Consulting ๐Ÿ‡ฌ๐Ÿ‡ง London 14,588 n/a
50
Expleo Groupexpleo.com

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 ๐Ÿ‡ซ๐Ÿ‡ท Saint Quentin en Yvelines 14,116 1966

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51
Savillssavills.com

Global real estate advisory firm providing tailored solutions and expert advice for residential and commercial property clients worldwide.

Real Estate ๐Ÿ‡ฌ๐Ÿ‡ง London 13,891 n/a
52
GFT Technologiesgft.com

Design advanced data, AI transformation solutions, modernize tech architectures, and develop next-gen core systems for industry leaders globally.

IT Services and IT Consulting ๐Ÿ‡ฉ๐Ÿ‡ช Stuttgart 13,400 1987
53
NTT DATA Business Solutionsnttdata-solutions.com

A global consultancy firm specializing in driving innovation and improving SAP solutions for businesses to transform, grow, and succeed

IT Services and IT Consulting ๐Ÿ‡ฉ๐Ÿ‡ช Bielefeld 12,858 1989
54
RSK Grouprskgroup.com

Global provider of environmental consultancy and engineering services, integrating innovation and multidisciplinary collaboration to address complex sustainability challenges.

Environmental Services ๐Ÿ‡ฌ๐Ÿ‡ง Helsby 12,442 n/a
55
Tietotieto.com

Providing software and technology consulting services focused on creating lasting impact and delivering effective solutions for clients.

Technology, Information and Internet ๐Ÿ‡ซ๐Ÿ‡ฎ 12,353 1968
56
Grupo Tragsatragsa.es

Provides engineering, technical assistance, and execution of projects for public administrations in agriculture, environment, and rural development sectors.

Environmental Services ๐Ÿ‡ช๐Ÿ‡ธ Madrid 12,239 1977
57
Bechtle Schweiz AGbechtle.com

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 ๐Ÿ‡จ๐Ÿ‡ญ Mรคgenwil 12,000 1983
58
Altrancapgemini-engineering.com

Altran, now Capgemini Engineering, offers engineering services Follow them on LinkedIn for updates and insights

IT Services and IT Consulting ๐Ÿ‡ซ๐Ÿ‡ท Neuilly-sur-Seine 11,652 n/a
59
PwC Deutschlandpwc.de

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 ๐Ÿ‡ฉ๐Ÿ‡ช Frankfurt 11,566 n/a
60
SEGULA Technologiessegulatechnologies.com

Provides global engineering services across major industrial sectors, committed to innovation, from research to industrialization and production.

Engineering Services ๐Ÿ‡ซ๐Ÿ‡ท Nanterre 11,442 n/a
61
Ayesaayesa.com

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 ๐Ÿ‡ช๐Ÿ‡ธ Seville 11,405 1966
62
PwC UKpwc.co.uk

Professional services firm focusing on building trust in society and solving important problems through partnership and commercial expertise.

Accounting ๐Ÿ‡ฌ๐Ÿ‡ง London 10,873 n/a
63
Social Group - socialgroup.chsocialgroup.ch

Optimizing digital business ecosystems, enhancing LinkedIn presence for sustainable growth, measurable success, and maximum efficiency in sales and recruiting.

Business Consulting and Services ๐Ÿ‡จ๐Ÿ‡ญ Wallisellen 10,803 2012
64
Sogetisogeti.com

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 ๐Ÿ‡ซ๐Ÿ‡ท Paris 10,781 1967
65
T-Systems Internationalt-systems.com

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 ๐Ÿ‡ฉ๐Ÿ‡ช Frankfurt 10,768 2000
66
Devoteamdevoteam.com

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 ๐Ÿ‡ซ๐Ÿ‡ท Levallois-Perret 10,274 n/a
67
SYSTRAsystra.com

Leading engineering and consultancy group specializing in public transport and mobility solutions, connecting people and regions through transport infrastructure development.

Engineering Services ๐Ÿ‡ซ๐Ÿ‡ท Paris 10,162 n/a
68
BearingPointbearingpoint.com

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 ๐Ÿ‡ณ๐Ÿ‡ฑ Amsterdam 10,074 2002
69
BSIbsigroup.com

A global organization with over 100 years of experience in shaping best practices, helping businesses achieve excellence, competence, and sustainable growth

Professional Services ๐Ÿ‡ฌ๐Ÿ‡ง London 9,882 1901
70
Macemacegroup.com

Delivery consultancy and construction expertise for iconic buildings, data centres, life science, social infrastructure, and regeneration projects worldwide.

Construction ๐Ÿ‡ฌ๐Ÿ‡ง London 9,872 1990
71
KPMG Deutschlandkpmg.com

Providing audit, tax, consulting, and deal advisory services with interdisciplinary teams specializing in key industries across multiple locations.

Business Consulting and Services ๐Ÿ‡ฉ๐Ÿ‡ช Berlin 9,823 n/a
72
Atkinsatkinsrealis.com

World-class engineering services and nuclear organization connecting people, data, and technology to transform global infrastructure and energy systems through design and management.

Engineering Services ๐Ÿ‡ฌ๐Ÿ‡ง Epsom 9,798 n/a
73
Apaveapave.com

Specializes in technical, human, environmental, and digital risk management, ensuring safety and performance across various economic sectors for over 150 years.

Environmental Services ๐Ÿ‡ซ๐Ÿ‡ท Courbevoie 9,778 1867
74
Endavaendava.com

The company leverages technology and expertise to drive innovation and transform businesses with customized digital solutions across industries

IT Services and IT Consulting ๐Ÿ‡ฌ๐Ÿ‡ง London 9,559 2020
75
Forvis Mazars Groupforvismazars.com

International partnership delivering audit, tax, and advisory services across one hundred countries and territories through an integrated global professional services network.

Accounting ๐Ÿ‡ซ๐Ÿ‡ท Levallois-Perret 9,534 n/a
76
Tietoevrytieto.com

Creating purposeful technology to reinvent the world for good, focusing on the future of businesses, societies, and humanity

IT Services and IT Consulting ๐Ÿ‡ซ๐Ÿ‡ฎ Helsinki 9,343 n/a
77
AMSweareams.com

Global talent solutions business specializing in sourcing, selecting, and retaining top talent through digital innovation, HR expertise, and a holistic approach to workforce management

Human Resources Services ๐Ÿ‡ฌ๐Ÿ‡ง London 8,718 1996
78
COWIcowi.com

The company creates sustainable solutions with a focus on improving quality of life for present and future generations through engineering and architecture expertise

Civil Engineering ๐Ÿ‡ฉ๐Ÿ‡ฐ Lyngby 8,647 1930
79
EDAG Groupedag.com

Engineering service provider for mobility, defense, industry, and public solutions, developing complex products, systems, and production solutions with an interdisciplinary team.

Engineering Services ๐Ÿ‡ฉ๐Ÿ‡ช Wiesbaden 8,500 1969
80
SEIDORseidor.com

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 ๐Ÿ‡ช๐Ÿ‡ธ Barcelona 8,352 n/a
81
Netcompanynetcompany.com

Providing agile IT consulting and digital transformation services, delivering scalable, modern technology solutions for large Northern European clients.

IT Services and IT Consulting ๐Ÿ‡ฉ๐Ÿ‡ฐ Copenhagen 8,266 2000
82
RINArina.org

Providing expert engineering, testing, inspection, and certification services across diverse markets with a focus on sustainable growth and client partnership.

Professional Services ๐Ÿ‡ฎ๐Ÿ‡น Genoa 8,259 n/a
83
IAV GmbHiav.com

Development of sustainable, intelligent, and connected mobility solutions combining automotive engineering and IT expertise for various industries.

Engineering Services ๐Ÿ‡ฉ๐Ÿ‡ช Berlin 8,200 1983
84
ILUNIONilunion.com

A group of companies focused on creating a more accessible world, reinventing themselves daily to compete and move forward

Business Consulting and Services ๐Ÿ‡ช๐Ÿ‡ธ Madrid 8,198 2014
85
Assystemassystem.com

Independent nuclear engineering company accelerating energy transition, developing nuclear and renewable energies, power grids, hydrogen projects, and low-carbon transport.

Business Consulting and Services ๐Ÿ‡ซ๐Ÿ‡ท Courbevoie 8,143 n/a
86
Arteliaarteliagroup.com

consultancy, engineering, and project management group specializing in mobility, water, energy, building, and industry, offering comprehensive engineering solutions globally.

Civil Engineering ๐Ÿ‡ซ๐Ÿ‡ท Saint-Ouen 8,106 2010
87
Capcocapco.com

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 ๐Ÿ‡ฌ๐Ÿ‡ง London 8,026 1998
88
BTSbts.com

Helps organizations move strategy to execution, empowering teams, aligning leadership, and scaling breakthroughs through hands-on, practical consulting and immersive business simulations.

Business Consulting and Services ๐Ÿ‡ธ๐Ÿ‡ช Stockholm 7,996 1986
89
PwC Italypwc.com

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 ๐Ÿ‡ฎ๐Ÿ‡น Milan 7,793 1849
90
Royal HaskoningDHVhaskoning.com

Independent consulting engineering firm providing sustainable solutions addressing climate change, digital transformation, energy transition, and societal challenges worldwide.

Civil Engineering ๐Ÿ‡ณ๐Ÿ‡ฑ Amersfoort 7,740 1881
91
Akka Technologiesakkodis.com

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 ๐Ÿ‡ง๐Ÿ‡ช Brussels 7,700 1984
92
Azetsazets.com

A leading professional services firm in Northern Europe, providing advisory, accounting, audit, HR, recruitment, outsourcing, and technology solutions to clients

Accounting ๐Ÿ‡ฌ๐Ÿ‡ง London 7,523 n/a
93
Amaris Consultingamaris.com

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 ๐Ÿ‡จ๐Ÿ‡ญ Geneva 7,500 2007
94
SOCOTECsocotec.fr

Provides services throughout the entire life cycle of built assets for compliance, extended lifespan, improved performance, and peopleโ€™s safety in construction, infrastructure, and industry.

Environmental Services ๐Ÿ‡ซ๐Ÿ‡ท Guyancourt 7,326 1953
95
Accenture Italiaaccenture.com

Global professional services firm specializing in digital, cloud, security, strategy, consulting, technology, and operations across multiple industries worldwide.

IT Services and IT Consulting ๐Ÿ‡ฎ๐Ÿ‡น Milan 7,209 n/a
96
TRACTEBELtractebel-engie.com

Provides integrated solutions for sustainable energy and built environment projects, offering expertise in nuclear, renewables, power, grids, infrastructure, and water resources.

Engineering Services ๐Ÿ‡ง๐Ÿ‡ช Brussels 7,185 n/a
97
Wavestonewavestone.com

Provides consulting services combining technology and business expertise for strategic transformations and sustainable transitions for large companies.

Business Consulting and Services ๐Ÿ‡ซ๐Ÿ‡ท 100-101 Terrasse Boieldieu 7,026 1990
98
Mantumantu.com

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 ๐Ÿ‡จ๐Ÿ‡ญ Chรชne-Bourg 6,905 n/a
99
BDO UKbdo.co.uk

Provides tax, audit, assurance, accounting, business advisory, and outsourcing services to diverse sectors with a client-focused, innovative approach.

Accounting ๐Ÿ‡ฌ๐Ÿ‡ง London 6,800 1903
100
BIPbip-group.com

A diverse network of thinkers and creators offering tailored consultancy services, turning ideas into projects to drive market change and benefit customers

Business Consulting and Services ๐Ÿ‡ฎ๐Ÿ‡น Milan 6,757 n/a

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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 Nov 13, 2026.

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