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The 30 largest professional services firms in New York

Tamtam tracks 735 professional services firms headquartered in New York. This list ranks the 30 largest by number of employees on LinkedIn, led by Genpact, Kyndryl and Goldman Sachs. Their median headcount is 10,588. Half of them were founded in 1992 or later.

馃嚭馃嚫 New York30 companiesUpdated Nov 11, 2026

The professional services sector in New York is characterized by a significant presence of large, established firms. Companies like Genpact, with over 150,000 employees, specialize in digital operations and AI solutions, while Kyndryl focuses on advanced technology infrastructure. Goldman Sachs is a major player in financial services, and Marsh McLennan provides risk management and strategic consulting.

This list highlights a concentration of firms founded in the late 20th and early 21st centuries, indicating a period of growth in professional services. EXL partners with businesses for data-driven solutions, and VML is a global creative agency. A notable pattern is the dominance of business consulting, IT services, and financial services within this group.

#CompanyIndustryHeadquarters EmployeesFounded
1
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

Business Consulting and Services 馃嚭馃嚫 New York 151,199 1997
2
Kyndrylkyndryl.com

A global leader in designing, running, and managing advanced technology infrastructure, focusing on excellence, innovation, and advancing vital systems for human progress

IT Services and IT Consulting 馃嚭馃嚫 New York 90,000 2021
3
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.

Financial Services 馃嚭馃嚫 New York 76,000 n/a
4
WNSwns.com

Global provider of digital-led business transformation, combining industry knowledge, technology, analytics, and process expertise to deliver innovative solutions.

Business Consulting and Services 馃嚭馃嚫 New York 61,367 1996
5
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

Business Consulting and Services 馃嚭馃嚫 New York 58,974 1999
6
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.

Professional Services 馃嚭馃嚫 New York 40,340 1871
7
VMLvml.com

Global creative agency combining brand experience, customer experience, and commerce with deep data and technology expertise for clients.

Advertising Services 馃嚭馃嚫 New York 34,192 n/a
8
Marsh Riskmarsh.com

A global leader in insurance brokerage and risk advisory, providing data-driven solutions and advisory services to clients worldwide

Insurance 馃嚭馃嚫 New York 26,000 n/a
9
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

Professional Training and Coaching 馃嚭馃嚫 New York 25,000 1945
10
TransPerfecttransperfect.com

A global leader in language services and technologies, helping businesses expand internationally through translation, localization, multicultural marketing, interpretation, and more

Translation and Localization 馃嚭馃嚫 New York 17,809 1992
11
Synechronsynechron.com

Innovative consulting firm leveraging digital technology to deliver leading solutions in AI, digital, cloud, data, and software engineering for financial services and technology industries globally

Technology, Information and Internet 馃嚭馃嚫 New York 14,671 2001
12
Alvarez & Marsalalvarezandmarsal.com

Global professional services firm specializing in business transformation, restructuring, performance improvement, and delivering practical solutions for complex organizational challenges.

Business Consulting and Services 馃嚭馃嚫 New York 14,064 n/a
13
Marshmarsh.com

provides risk management, strategy consulting, and people advisory services to clients worldwide across multiple specialized business units

Professional Services 馃嚭馃嚫 New York 12,940 n/a
14
GLGglg.com

Connecting decision makers with experts for true clarity and insights to make informed decisions and stay ahead in their profession Visit website for more details

Information Services 馃嚭馃嚫 New York 12,228 1998
15
WSP in the U.S.wsp.com

This professional services consulting firm plans, advises, designs, manages, and engineers sustainable solutions that shape communities for future generations to thrive

Professional Services 馃嚭馃嚫 New York 10,588 n/a

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16
Accenture Songaccenture.com

This company is the world's largest creative group powered by technology, offering innovative solutions to clients

Marketing Services 馃嚭馃嚫 New York 10,047 n/a
17
Oliver Wymanoliverwyman.com

Provide strategic advice and collaborative consulting to help clients navigate critical decisions and transformative changes for growth and success.

Business Consulting and Services 馃嚭馃嚫 New York 9,772 n/a
18
IPG Mediabrandsomnicommedia.com

manages global marketing investments through full-service agencies and specialty units, serving diverse industries with media and marketing solutions

Advertising Services 馃嚭馃嚫 New York 8,776 n/a
19
CI&Tciandt.com

AI-powered digital solutions provider partnering with top brands to drive business transformation through strategic innovation and scalable solutions

IT Services and IT Consulting 馃嚭馃嚫 New York 8,592 1995
20
Data Entry Job (Remote Job)omnilabes.com

This company specializes in hiring remote data entry clerks They are currently looking to fill positions in this field

Software Development 馃嚭馃嚫 New York 8,442 n/a
21
White & Case LLPwhitecase.com

Global law firm providing cross-border legal services with local expertise, innovative solutions, and client-focused guidance for complex issues.

Law Practice 馃嚭馃嚫 New York 8,237 1901
22
Epiqepiqglobal.com

Provides technology-enabled services for corporate counsel, law firms, and business professionals, streamlining administration of legal department, business operations, eDiscovery, and regulatory matters.

Law Practice 馃嚭馃嚫 New York 8,206 1988
23
Omnicomomc.com

Global marketing communications company offering integrated marketing services for 200+ brands worldwide, known for talent, creativity, and digital innovation

Advertising Services 馃嚭馃嚫 New York 8,062 n/a
24
Jefferiesjefferies.com

Global full-service investment banking and capital markets firm providing advisory, sales, trading, research, wealth and asset management services to investors, companies and governments.

Investment Banking 馃嚭馃嚫 New York 8,019 1962
25
Newmarknmrk.com

Advisory and service provider for commercial real estate, serving institutional investors, corporations, owners, and occupiers worldwide with tailored solutions.

Real Estate 馃嚭馃嚫 New York 7,201 1929
26
Krollkroll.com

Leading provider of risk and financial advisory solutions, offering insights, data, and technology to help clients navigate complex demands and gain competitive advantage

Business Consulting and Services 馃嚭馃嚫 New York 7,199 n/a
27
Any Studiosanystudios.com

The company specializes in creating brand stories through strategic design and high-quality production services

Design Services 馃嚭馃嚫 New York 7,103 2015
28
Brown Brothers Harrimanbbh.com

Global financial services firm providing investor services, asset servicing, investment management, private equity, corporate advisory, and banking solutions worldwide.

Financial Services 馃嚭馃嚫 New York 6,819 1818
29
Fragomenfragomen.com

Provides comprehensive immigration legal services and technology solutions to corporate, academic, nonprofit, and individual clients globally.

Law Practice 馃嚭馃嚫 New York 6,656 1951
30
Apollo Global Management, Inc.apollo.com

Global alternative asset manager providing excess returns across risk-reward spectrum from investment grade credit to private equity and specialized retirement savings products.

Financial Services 馃嚭馃嚫 New York 5,845 1990

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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 11, 2026.

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