These are large professional services firms worldwide, primarily focusing on IT services, business consulting, and human resources. The companies listed are substantial in size, with employee counts ranging from over 100,000 to over 700,000.
Notable companies include Tata Consultancy Services, which provides technology services globally; Randstad, offering workforce solutions and HR advice; Deloitte, a global professional services firm; and EY, providing assurance, consulting, and tax services. Many of these firms, such as Capgemini and Concentrix, specialize in leveraging AI and technology for digital transformation and customer experience.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Tata Consultancy Servicestcs.com
Provides technology services worldwide, enabling client transformation across the AI stack, fostering innovation, engineering excellence, and customer service for adaptive enterprises. |
708,725 | |||
| 2 |
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 | |||
| 3 |
Deloittedeloitte.com
Global professional services firm empowering diverse talents to drive progress for clients worldwide through advice, action, and integrity |
526,765 | |||
| 4 | 404,207 | ||||
| 5 |
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 | |||
| 6 |
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 | |||
| 7 | 265,000 | ||||
| 8 |
Concentrixconcentrix.com
Provides customer experience solutions and technology, improving business performance for global brands across various industries, creating better business outcomes. |
218,681 | |||
| 9 |
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 | |||
| 10 |
TECH MAHINDRAtechmahindra.com
Tech Mahindra offers innovative IT experiences globally, leveraging next-gen technologies for digital transformation Part of Mahindra Group, driving sustainable business and societal change |
159,000 | |||
| 11 |
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 | |||
| 12 |
Genpactgenpact.com
A global professional services firm with over 125,000 employees in 30+ countries, specializing in digital operations, data, technology, and AI solutions for leading enterprises |
151,199 | |||
| 13 |
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 | |||
| 14 | 116,486 | ||||
| 15 | 104,899 | ||||
| 16 |
Allied Universalaus.com
Provides tailored security and facility services using smart technology, supporting diverse sectors with local leadership and community presence. |
104,797 | |||
| 17 |
LTIMindtreeltm.com
A global technology consulting company driving digital transformation for enterprises, delivering superior business outcomes through domain expertise and innovative digital solutions |
99,387 | |||
| 18 | 93,574 | ||||
| 19 |
DXC Technologydxc.com
It assists global companies in managing critical systems, modernizing IT, optimizing data, and ensuring security across various cloud environments. |
90,597 | |||
| 20 |
Kyndrylkyndryl.com
A global leader in designing, running, and managing advanced technology infrastructure, focusing on excellence, innovation, and advancing vital systems for human progress |
90,000 | |||
| 21 |
Accenture in Indiaaccenture.com
Global professional services company specializing in digital, cloud, and security solutions across 40+ industries with a focus on technology and human ingenuity for global clients |
81,860 | |||
| 22 |
Goldman Sachsgoldmansachs.com
Global financial institution providing expert capital markets services, investment banking, and asset management for clients through partnership, integrity, and world-class operational excellence. |
76,000 | |||
| 23 | 75,008 | ||||
| 24 | 74,385 | ||||
| 25 |
ManpowerGroupmanpowergroup.com
Global workforce solutions company sourcing, assessing, and managing talent for organizations worldwide, while providing sustainable employment opportunities across various industries and skills |
72,454 | |||
| 26 |
Jacobsjacobs.com
Delivering outcomes and solutions for complex challenges in advanced manufacturing, cities, energy, environment, life sciences, transportation, and water, from advisory to lifecycle management. |
68,461 | |||
| 27 |
Compass Group USAcompassgroupcareers.com
Redefines food and facility services, delivering excellence to healthcare, education, cultural centers, sports venues, and corporations. Recognized for innovation, diversity, and trustworthiness. |
68,303 | |||
| 28 |
EPAM Systemsepam.com
Global digital transformation services provider specializing in product development and engineering, creating better enterprise, education, and health platforms worldwide |
66,049 | |||
| 29 |
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 | |||
| 30 | 61,367 | ||||
| 31 |
Halliburtonhalliburton.com
Collaborates to engineer solutions maximizing energy asset value, from locating hydrocarbons, managing data, drilling, evaluating, and constructing wells, to optimizing production. |
60,277 | |||
| 32 |
HDB Financial Services Ltd.hdbfs.com
Provides diverse financial lending products like personal, business, and vehicle loans, alongside BPO services such as collection call centers and back-office operations for individuals and businesses. |
60,142 | |||
| 33 |
EXLexlservice.com
The company partners with businesses to tailor data-driven solutions, improve efficiency, enhance customer relationships, and drive revenue growth through collaboration and technology |
58,974 | |||
| 34 | 57,963 | ||||
| 35 |
Aramarkaramark.com
Global hospitality service provider delivering food and facilities management to educational institutions, healthcare providers, sports teams, and municipalities across sixteen countries worldwide. |
56,723 | |||
| 36 | 55,656 | ||||
| 37 |
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 | |||
| 38 |
Restaurantegonzaloveci.com
A restaurant located in San Pedro Sula, offering food and dining services to customers in the area |
53,004 | |||
| 39 |
Cushman & Wakefieldcushmanwakefield.com
Global commercial real estate services provider with 52,000 professionals focused on advancing client, colleague, and community outcomes worldwide. |
53,000 | |||
| 40 |
Gallaghergallagher.com
Global insurance brokerage offering risk management, consulting, employee benefits, claims management, and retirement services to protect assets and support clients. |
52,767 | |||
| 41 |
Almaviva Groupalmavivagroup.com
Provides digital innovation and ICT solutions globally, supporting business model transformation and competitiveness across public and private sectors. |
52,112 | |||
| 42 |
ALTRADaltrad.com
Global provider of industrial services and equipment manufacturing, offering high-value solutions across energy, oil & gas, construction, and environmental sectors. |
52,000 | |||
| 43 |
BDObdo.global
Providing professional services globally with 1800 offices, focusing on quality, technology, and innovative solutions for long-term client value. |
51,974 | |||
| 44 |
Avanadeavanade.com
Innovative provider of digital, cloud, and advisory services within the Microsoft ecosystem, focused on making a human impact, solving challenges, and promoting sustainability and diversity |
50,000 | |||
| 45 | 49,000 | ||||
| 46 |
NTT DATAnttdata.com
Providing IT and business consulting, digital transformation, managed services, and industry solutions to clients worldwide for long-term success. |
48,385 | |||
| 47 |
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 | |||
| 48 |
Edward Jonesedwardjones.com
Provides personalized financial advisory and investment services through a large network of advisors to help clients achieve financial goals. |
45,845 | |||
| 49 |
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 | |||
| 50 |
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 | |||
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 |
C.S
The company does amazing things. These amazing things happen daily. They are involved in many amazing projects and activities. |
44,000 | |||
| 52 |
Arcadisarcadis.com
delivering transformative projects globally addressing climate, energy, and livable cities through design, engineering, architecture, and consulting for a better future |
42,295 | |||
| 53 |
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 | |||
| 54 |
L&T Technology Servicesltts.com
Provides engineering and technology services globally, supporting product design, development, and delivery across diverse industries with innovation. |
41,420 | |||
| 55 |
Publicis Groupepublicisgroupe.com
Helps clients transform their marketing and digital businesses, providing expertise in communications, media, data, and technology across 100+ countries. |
41,020 | |||
| 56 |
Boston Consulting Group (BCG)bcg.com
A global management consulting firm that partners with organizations to tackle challenges, drive growth, and create positive societal impact through innovative solutions |
40,412 | |||
| 57 |
Marsh McLennancorporate.marsh.com
Provides risk management, strategic consulting, and human resources solutions to clients worldwide, enhancing their ability to navigate challenges and seize opportunities. |
40,340 | |||
| 58 |
Conduentconduent.com
Digital business solutions provider leveraging cloud computing, AI, and automation to enhance client operations, improve customer experiences, and drive efficiencies |
38,990 | |||
| 59 | 38,710 | ||||
| 60 |
Worleyworley.com
Global professional services company specializing in energy, chemicals, and resources, providing integrated solutions for project delivery and asset management |
37,425 | |||
| 61 |
Booz Allen Hamiltonboozallen.com
Innovative technology consulting firm advancing critical missions through AI, cybersecurity, and engineering solutions, empowering clients to shape the future |
37,244 | |||
| 62 |
Leidosleidos.com
Global technology leader providing digital mission innovations and efficient technical services for government and commercial customers through a diverse, flexible work environment. |
37,171 | |||
| 63 | 36,645 | ||||
| 64 |
Fluor Corporationfluor.com
Global EPC company providing engineering solutions to energy, infrastructure, life sciences, technology, mining, and government sectors with emphasis on innovation and sustainability |
36,512 | |||
| 65 |
Escrit贸rio de Advocacia
Legal services provided by a law office specializing in advocacy and legal representation |
35,758 | |||
| 66 |
GlobalLogicgloballogic.com
A global product development services leader, combining software engineering expertise and industry experience to help customers design and deliver next-generation products and digital experiences |
35,494 | |||
| 67 |
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 | |||
| 68 | 34,192 | ||||
| 69 |
Quess Corp Limitedquesscorp.com
An integrated business service provider offering technology-enabled staffing and managed outsourcing services to create a more productive workforce and drive success for clients |
33,670 | |||
| 70 |
Bechtel Corporationbechtel.com
Engineering, construction, and project management services for energy, infrastructure, manufacturing, mining, and nuclear markets worldwide, delivering successful outcomes. |
33,626 | |||
| 71 |
Deloitte India (Offices of the US)deloitte.com
A region within a global organization providing professional services in India to their US-based parent companies across various sectors |
33,190 | |||
| 72 | 32,618 | ||||
| 73 |
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 | |||
| 74 |
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 | |||
| 75 | 31,433 | ||||
| 76 |
KPMG Indiasocial.kpmg
Provides industry-tailored, technology-enabled business advisory services to over 2700 companies across 14 Indian cities, leveraging local professionals and global service delivery. |
31,247 | |||
| 77 |
Manpowermanpower.com
Global leader in contingent and permanent recruitment, providing agile staffing solutions and access to a deep talent pool for businesses. |
30,000 | |||
| 78 |
Collierscolliers.com
Offers real estate services, engineering solutions, and investment management, focusing on client success and delivering strong financial returns. |
29,561 | |||
| 79 | 28,584 | ||||
| 80 |
Globantglobant.com
A digitally native company specializing in helping organizations innovate and unleash potential, with a focus on diversity, inclusion, and cybersecurity |
28,419 | |||
| 81 |
TEKsystemsteksystems.com
Global solutions provider specializing in accelerating business transformation through resolving technology, business, and talent challenges for Fortune 500 organizations |
28,131 | |||
| 82 |
Tetra Techtetratech.com
A global provider of consulting and engineering services, specializing in innovative technical solutions for water, environment, infrastructure, energy, and international development projects |
27,460 | |||
| 83 |
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 | |||
| 84 |
Robert Halfroberthalf.com
Connecting skilled professionals with companies through contract, temporary, and permanent placements in finance, technology, marketing, legal, and administrative sectors. |
26,429 | |||
| 85 | 26,193 | ||||
| 86 |
Marsh Riskmarsh.com
A global leader in insurance brokerage and risk advisory, providing data-driven solutions and advisory services to clients worldwide |
26,000 | |||
| 87 |
Capitacapita.com
A leading provider of business services using data, technology, and people to simplify connections between governments, citizens, businesses, and customers |
25,581 | |||
| 88 | 25,394 | ||||
| 89 |
Mercer Espa帽amercer.com
Mercer is a global consultancy business focused on providing trusted advice and solutions to help organizations build brighter, healthier, and more sustainable futures |
25,000 | |||
| 90 |
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 | |||
| 91 |
Eurofinseurofins.com
An international life sciences company offering analytical testing services in food, environmental, pharmaceutical, and cosmetic industries, ensuring safety and authenticity |
24,896 | |||
| 92 |
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 | |||
| 93 |
Wipro Ltd. - Indiawipro.com
A leading provider of IT services leveraging technology solutions to enable business transformation, aligning IT strategies with business goals |
24,515 | |||
| 94 |
Publicis Sapientpublicissapient.com
A digital business transformation partner, specializing in strategy, product, experience, engineering, data, and delivering impactful solutions to global organizations |
24,251 | |||
| 95 |
Bain & Companybain.com
Global consultancy aiding ambitious change makers define the future, achieving extraordinary results, outperforming competition, redefining industries, and tackling urgent societal challenges. |
23,729 | |||
| 96 |
Syneos Healthsyneoshealth.com
A leading biopharmaceutical solutions organization driving customer success by translating clinical, medical, and commercial insights into outcomes worldwide Promoting inclusivity and sustainability |
23,569 | |||
| 97 |
Unisysunisys.com
A global technology solutions company offering digital workplace, cloud, applications & infrastructure, enterprise computing, and business process solutions to empower organizations |
23,358 | |||
| 98 |
Sedgwicksedgwick.com
A global provider of risk, benefits, and business solutions, offering tailored resources to help organizations with health, claims, brand protection, and business continuity |
23,170 | |||
| 99 |
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 | |||
| 100 |
Parexelparexel.com
Provides comprehensive clinical development services globally, from early to late phase trials, helping new treatments reach patients faster through expertise and innovation. |
21,982 | |||
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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 12, 2026.
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- Multinational companies in the world 74,925
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The same list elsewhere
- Professional services firms in Europe 13,698
- Professional services firms in the United States 7,079
- Professional services firms in France 6,610
- Professional services firms in the United Kingdom 2,706
- Professional services firms in Asia 1,619
- Professional services firms in India 1,028
- Professional services firms in Latin America 924
- Professional services firms in the Netherlands 739
- Professional services firms in Germany 690
- Professional services firms in Brazil 544
- Professional services firms in Spain 522
- Professional services firms in Canada 481
- Professional services firms in Switzerland 402
- Professional services firms in Italy 398
- Professional services firms in Belgium 396
- Professional services firms in Australia 377
- Professional services firms in Africa 257
- Professional services firms in the Middle East 253
- Professional services firms in Sweden 194
- Professional services firms in China 162
- Professional services firms in Denmark 150
- Professional services firms in Poland 149
- Professional services firms in Ireland 126
- Professional services firms in Norway 116