This selection of professional services firms in Europe includes some of the largest companies in the sector. Among them are global giants like Randstad, which provides HR services and staffing, and EY, offering assurance, consulting, and tax services. Capgemini specializes in IT services and consulting, while KPMG Italy focuses on audit, advisory, and tax. Other prominent firms include Adecco in staffing, and Allianz Services providing specialized core insurance operations.
The companies listed demonstrate a broad geographic distribution of headquarters across Europe, with a notable concentration in major cities such as London, Paris, and Milan. Industries represented span human resources, IT services, financial services, security, and environmental services, indicating the diverse nature of professional services across the continent.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Randstadrandstad.com
Provides companies with quality workforces, helps people find jobs, advises on HR needs, and offers training, combining technology with personalized human attention. |
653,000 | |||
| 2 | 404,207 | ||||
| 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 |
342,989 | |||
| 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 |
265,000 | |||
| 5 |
Adeccoadecco.com
Top provider of HR solutions matching talented individuals with job opportunities worldwide, offering industry insight, training, and mentoring for career development |
199,071 | |||
| 6 |
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. |
159,000 | |||
| 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. |
124,000 | |||
| 8 | 116,486 | ||||
| 9 | 93,574 | ||||
| 10 | 74,385 | ||||
| 11 |
ISS A/Sissworld.com
A workplace experience and facility management company that provides placemaking solutions for better business performance and enjoyable work environments |
64,283 | |||
| 12 | 55,656 | ||||
| 13 |
Bureau Veritasbureauveritas.com
A global leader in testing, inspection, and certification services, fostering confidence through expertise and independence while addressing crucial societal and environmental challenges |
55,072 | |||
| 14 |
Almaviva Groupalmavivagroup.com
Provides digital innovation and ICT solutions globally, supporting business model transformation and competitiveness across public and private sectors. |
52,112 | |||
| 15 |
ALTRADaltrad.com
Global provider of industrial services and equipment manufacturing, offering high-value solutions across energy, oil & gas, construction, and environmental sectors. |
52,000 | |||
| 16 |
BDObdo.global
Providing professional services globally with 1800 offices, focusing on quality, technology, and innovative solutions for long-term client value. |
51,974 | |||
| 17 | 49,000 | ||||
| 18 |
Sopra Steriasoprasteria.com
Offers consulting, digital services, and solutions, assisting large companies and organizations with digital transformation, improving competitiveness through technology and collaboration. |
47,609 | |||
| 19 |
Minsaitminsait.com
A leading Spanish technological consultant operating globally, leveraging cloud, security, payments, and innovative technology to drive business and societal impact #MoreMinsait |
45,000 | |||
| 20 |
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. |
44,836 | |||
| 21 |
Arcadisarcadis.com
delivering transformative projects globally addressing climate, energy, and livable cities through design, engineering, architecture, and consulting for a better future |
42,295 | |||
| 22 |
Mazarsforvismazars.com
Global integrated partnership providing audit, accountancy, advisory, tax, and legal services through fifty thousand professionals across more than one hundred countries worldwide. |
42,000 | |||
| 23 |
Publicis Groupepublicisgroupe.com
Helps clients transform their marketing and digital businesses, providing expertise in communications, media, data, and technology across 100+ countries. |
41,020 | |||
| 24 | 38,710 | ||||
| 25 |
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 |
35,001 | |||
| 26 | 32,618 | ||||
| 27 |
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 |
31,932 | |||
| 28 |
Hayshaysplc.com
Specialist recruitment and workforce solutions provider offering advisory services, career transitions, and employer brand positioning, with a focus on empowering people and businesses to succeed globally |
31,854 | |||
| 29 |
Webhelpwebhelp.com
The company specializes in creating innovative customer journeys using data insights, AI, and human talent to drive growth for brands worldwide |
27,162 | |||
| 30 | 26,193 | ||||
| 31 |
Capitacapita.com
A leading provider of business services using data, technology, and people to simplify connections between governments, citizens, businesses, and customers |
25,581 | |||
| 32 |
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 |
24,976 | |||
| 33 |
Eurofinseurofins.com
An international life sciences company offering analytical testing services in food, environmental, pharmaceutical, and cosmetic industries, ensuring safety and authenticity |
24,896 | |||
| 34 |
Mott MacDonaldmottmac.com
The company focuses on improving society through digital innovation, excellence, and solving intricate challenges with clients to deliver better outcomes |
24,653 | |||
| 35 |
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 |
22,591 | |||
| 36 |
Inetuminetum.com
European digital services leader helping businesses, public sector, and society with digital impact, performance, and innovation, partnering with major software publishers. |
21,788 | |||
| 37 |
Computacentercomputacenter.com
A leading technology and services provider, trusted by large organizations, helping customers manage and transform their technology infrastructure for digital transformation |
20,070 | |||
| 38 |
Applus+applus.com
A global leader in testing, inspection, and certification services, providing innovative solutions for asset integrity, regulatory compliance, and environmental performance |
20,046 | |||
| 39 | 19,737 | ||||
| 40 |
The Adecco Groupadeccogroup.com
Global talent company providing employability, digital and engineering solutions, and workforce optimization across multiple industries and countries. |
19,418 | |||
| 41 |
Bilfingerbilfinger.com
An international industrial services provider specializing in increasing efficiency and sustainability for process industry customers through a comprehensive range of services |
18,940 | |||
| 42 |
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 |
18,645 | |||
| 43 |
EY-Parthenoney.com
Multidisciplinary professionals across 120 countries provide actionable corporate, transaction, and turnaround strategies to clients using data analytics and digital capabilities |
18,536 | |||
| 44 |
Rambollramboll.com
Global company offering sustainable solutions in architecture, engineering, and consultancy across various sectors to create sustainable cities and societies worldwide |
18,506 | |||
| 45 |
T脺V S脺Dtuvsud.com
Experts provide testing, certification, auditing, and advisory services across various industries, ensuring safety, security, and sustainability for technological advancements and market access. |
18,205 | |||
| 46 | 17,188 | ||||
| 47 |
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 |
17,000 | |||
| 48 |
BCD Travelbcdtravel.com
Comprehensive corporate travel management with digital tools, meetings and events services, global consultancy, supporting cost savings and sustainability worldwide. |
16,897 | |||
| 49 | 15,750 | ||||
| 50 |
Michael Pageredirect.michaelpage.com
Professional services recruitment with specialized teams offering local market knowledge and international network support across multiple industries and regions. |
15,725 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 51 |
Bluesky Agencyfabiotoffanin.it
An Italian agency based in Venice offering services for public and private boards, seeking partners to develop a Smart Tourism Network |
15,612 | |||
| 52 |
Sendirisendiri.nl
Learning and development consultancy specializing in online programs, community support, and guidance to empower individuals and organizations in enhancing skills and knowledge |
15,445 | |||
| 53 |
Luxoftluxoft.com
A global digital strategy and software engineering firm, part of DXC Technology, offering bespoke technology solutions to drive business innovation worldwide |
15,420 | |||
| 54 |
Egisegis-group.com
An international consultancy specializing in sustainable infrastructure, construction engineering, and mobility services, working towards achieving carbon neutrality and social development globally |
15,158 | |||
| 55 | 15,102 | ||||
| 56 |
Studio legalestudiocorriaslucente.it
Legal office specializing in criminal law, providing legal representation and advice |
15,087 | |||
| 57 |
Bechtlebechtle.com
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 |
15,000 | |||
| 58 |
Onet SAgroupeonet.com
A family service group with 74,000 employees in 8 countries, offering a wide range of services including cleaning, security, engineering, and maintenance |
14,750 | |||
| 59 |
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 |
14,616 | |||
| 60 |
Cloud Consultingccltng.com
Oversees national education policies, youth programs, and administration to support learning and development across France. |
14,588 | |||
| 61 |
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. |
14,116 | |||
| 62 |
Savillssavills.com
Global real estate advisory firm providing tailored solutions and expert advice for residential and commercial property clients worldwide. |
13,891 | |||
| 63 |
Smollansmollan.com
Partners with brands and retailers, building solutions that drive growth and create opportunities at the point of purchase. |
13,502 | |||
| 64 |
GFT Technologiesgft.com
Design advanced data, AI transformation solutions, modernize tech architectures, and develop next-gen core systems for industry leaders globally. |
13,400 | |||
| 65 | 12,984 | ||||
| 66 |
Rentokil Initialrentokil-initial.com
Global provider of pest control, hygiene, and well-being services protecting people and enhancing lives for commercial and private customers. |
12,515 | |||
| 67 |
RSK Grouprskgroup.com
Global provider of environmental consultancy and engineering services, integrating innovation and multidisciplinary collaboration to address complex sustainability challenges. |
12,442 | |||
| 68 |
Tecnicas Reunidastecnicasreunidas.es
An international general contractor specializing in engineering and construction of industrial facilities in oil & gas, refining, power generation, infrastructures, and energy transition |
12,368 | |||
| 69 | 12,353 | ||||
| 70 |
Grupo Tragsatragsa.es
Provides engineering, technical assistance, and execution of projects for public administrations in agriculture, environment, and rural development sectors. |
12,239 | |||
| 71 | 12,081 | ||||
| 72 |
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. |
12,000 | |||
| 73 |
SoftwareOnesoftwareone.com
Global provider of software and cloud solutions, specializing in migration, modernization, and optimization for clients worldwide Headquartered in Switzerland |
11,985 | |||
| 74 |
Altrancapgemini-engineering.com
Altran, now Capgemini Engineering, offers engineering services Follow them on LinkedIn for updates and insights |
11,652 | |||
| 75 |
PwC Deutschlandpwc.de
A leading auditing and consulting firm in Germany, offering services worldwide with expertise in assurance, tax, legal, deals, and strategy advisory |
11,566 | |||
| 76 |
SEGULA Technologiessegulatechnologies.com
Provides global engineering services across major industrial sectors, committed to innovation, from research to industrialization and production. |
11,442 | |||
| 77 | 11,405 | ||||
| 78 | 11,291 | ||||
| 79 |
TMF Grouptmf-group.com
Provides global administrative, financial, and legal support, helping companies navigate complex regulations and operate safely across numerous international markets. |
11,186 | |||
| 80 |
Equans Franceequans.fr
Designs, installs, and delivers bespoke solutions optimizing equipment and usage for businesses, local authorities, and industrial players in energy, industrial, and digital transitions. |
11,029 | |||
| 81 | 11,000 | ||||
| 82 | 10,873 | ||||
| 83 |
Social Group - socialgroup.chsocialgroup.ch
Optimizing digital business ecosystems, enhancing LinkedIn presence for sustainable growth, measurable success, and maximum efficiency in sales and recruiting. |
10,803 | |||
| 84 |
Sogetisogeti.com
Helps organizations with technology solutions, implements innovation quickly, focuses on quality engineering, cloud, application development through AI, data, and automation. |
10,781 | |||
| 85 |
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. |
10,768 | |||
| 86 |
Devoteamdevoteam.com
AI-driven tech consulting firm specializing in cloud platforms, cyber, data, and sustainability, guiding businesses through sustainable digital transformation to deliver value. |
10,274 | |||
| 87 |
SYSTRAsystra.com
Leading engineering and consultancy group specializing in public transport and mobility solutions, connecting people and regions through transport infrastructure development. |
10,162 | |||
| 88 |
BearingPointbearingpoint.com
Independent consulting firm offering tailored solutions for complex business environments, applying deep industry expertise to help clients achieve their goals globally |
10,074 | |||
| 89 |
BSIbsigroup.com
A global organization with over 100 years of experience in shaping best practices, helping businesses achieve excellence, competence, and sustainable growth |
9,882 | |||
| 90 |
Macemacegroup.com
Delivery consultancy and construction expertise for iconic buildings, data centres, life science, social infrastructure, and regeneration projects worldwide. |
9,872 | |||
| 91 |
KPMG Deutschlandkpmg.com
Providing audit, tax, consulting, and deal advisory services with interdisciplinary teams specializing in key industries across multiple locations. |
9,823 | |||
| 92 |
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. |
9,798 | |||
| 93 | 9,778 | ||||
| 94 |
Endavaendava.com
The company leverages technology and expertise to drive innovation and transform businesses with customized digital solutions across industries |
9,559 | |||
| 95 |
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. |
9,534 | |||
| 96 | 9,343 | ||||
| 97 |
Apex Group Ltd (UK & Ireland)apexgroup.com
A global financial services provider with offices in over 50 countries, offering a wide range of services to asset managers, capital markets, and family offices |
9,281 | |||
| 98 |
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 |
8,718 | |||
| 99 | 8,687 | ||||
| 100 | 8,647 | ||||
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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 13, 2026.
More company lists in Europe
- The largest companies in Europe 213,526
- Multinational companies in Europe 42,019
- Companies with in-house R&D in Europe 20,166
- Retail chains in Europe 19,258
- Manufacturers in Europe 18,151
- SaaS companies in Europe 13,682
- Software Development companies in Europe 12,950
- Financial services firms in Europe 12,941
- IT Services and IT Consulting companies in Europe 11,704
- IT services companies in Europe 11,376
- Hardware manufacturers in Europe 10,563
- Family-owned companies in Europe 9,878
- Critical infrastructure operators in Europe 9,815
- Financial Services companies in Europe 9,479
- Consulting firms in Europe 8,900
- Public sector organisations in Europe 8,565
- Education providers in Europe 7,925
- Companies with a mobile app in Europe 7,899
- Distributors and wholesalers in Europe 7,573
- Retail companies in Europe 6,240
- Healthcare providers in Europe 6,132
- E-commerce companies in Europe 5,864
- Hotel and hospitality groups in Europe 5,739
- Subscription businesses in Europe 5,640
The same list elsewhere
- Professional services firms in the world 24,737
- Professional services firms in France 6,610
- Professional services firms in the United Kingdom 2,706
- Professional services firms in the Netherlands 739
- Professional services firms in Germany 690
- Professional services firms in Spain 523
- Professional services firms in Switzerland 402
- Professional services firms in Italy 398
- Professional services firms in Belgium 396
- Professional services firms in Sweden 194
- Professional services firms in Denmark 150
- Professional services firms in Poland 149
- Professional services firms in Ireland 126
- Professional services firms in Norway 116
- Professional services firms in Portugal 91
- Professional services firms in Finland 79
- Professional services firms in Austria 58
- Professional services firms in Luxembourg 56
- Professional services firms in the Czech Republic 35
- Professional services firms in Ukraine 31