The companies listed are large professional services firms based in New York State, predominantly in New York City. They operate across various sectors, including business consulting, financial services, IT consulting, and insurance. Many of these firms were founded in the late 20th or early 21st century, indicating a period of growth in these industries.
Key examples include Genpact, specializing in digital operations and AI solutions, and Kyndryl, a global leader in advanced technology infrastructure. Goldman Sachs provides capital markets and asset management services, while WNS focuses on digital-led business transformation. Marsh McLennan offers risk management and strategic consulting, and VML is a global creative agency.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 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 |
151,199 | |||
| 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 |
90,000 | |||
| 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. |
76,000 | |||
| 4 | 61,367 | ||||
| 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 |
58,974 | |||
| 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. |
40,340 | |||
| 7 | 34,192 | ||||
| 8 |
Marsh Riskmarsh.com
A global leader in insurance brokerage and risk advisory, providing data-driven solutions and advisory services to clients worldwide |
26,000 | |||
| 9 |
TransPerfecttransperfect.com
A global leader in language services and technologies, helping businesses expand internationally through translation, localization, multicultural marketing, interpretation, and more |
17,809 | |||
| 10 |
Marsh McLennan Agencymarshmma.com
Provides business insurance, employee health benefits, retirement planning, and private client insurance with personalized local service and global expertise. |
14,684 | |||
| 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 |
14,671 | |||
| 12 |
Alvarez & Marsalalvarezandmarsal.com
Global professional services firm specializing in business transformation, restructuring, performance improvement, and delivering practical solutions for complex organizational challenges. |
14,064 | |||
| 13 | 12,940 | ||||
| 14 | 12,228 | ||||
| 15 |
USI Insurance Servicesusi.com
A global insurance brokerage and consulting firm offering property & casualty, employee benefits, personal risk, and retirement solutions for businesses and individuals |
10,717 | |||
| 16 |
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 |
10,588 | |||
| 17 |
Accenture Songaccenture.com
This company is the world's largest creative group powered by technology, offering innovative solutions to clients |
10,047 | |||
| 18 |
Oliver Wymanoliverwyman.com
Provide strategic advice and collaborative consulting to help clients navigate critical decisions and transformative changes for growth and success. |
9,772 | |||
| 19 |
IPG Mediabrandsomnicommedia.com
manages global marketing investments through full-service agencies and specialty units, serving diverse industries with media and marketing solutions |
8,776 | |||
| 20 |
CI&Tciandt.com
AI-powered digital solutions provider partnering with top brands to drive business transformation through strategic innovation and scalable solutions |
8,592 | |||
| 21 |
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 |
8,442 | |||
| 22 |
White & Case LLPwhitecase.com
Global law firm providing cross-border legal services with local expertise, innovative solutions, and client-focused guidance for complex issues. |
8,237 | |||
| 23 |
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. |
8,206 | |||
| 24 | 8,062 | ||||
| 25 |
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. |
8,019 | |||
| 26 | 7,201 | ||||
| 27 | 7,199 | ||||
| 28 |
Any Studiosanystudios.com
The company specializes in creating brand stories through strategic design and high-quality production services |
7,103 | |||
| 29 |
Brown Brothers Harrimanbbh.com
Global financial services firm providing investor services, asset servicing, investment management, private equity, corporate advisory, and banking solutions worldwide. |
6,819 | |||
| 30 |
Fragomenfragomen.com
Provides comprehensive immigration legal services and technology solutions to corporate, academic, nonprofit, and individual clients globally. |
6,656 | |||
| 31 |
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. |
5,845 | |||
| 32 |
Greenberg Traurig, LLPgtlaw.com
A global law firm with 2750+ attorneys, recognized for client service, diversity, innovation, pro bono work, and commitment to renewable energy and philanthropy |
5,767 | |||
| 33 |
Welocalizewelocalize.com
A global leader in localized content solutions, leveraging innovative technology and a network of linguistic experts to drive business outcomes worldwide |
5,734 | |||
| 34 |
Strategy&strategyand.pwc.com
Providing visionary yet pragmatic strategy consulting services, we help clients solve tough problems through executable strategies resulting in measurable and sustainable outcomes |
5,717 | |||
| 35 |
Inizioinizio.com
Providing tailored, innovative solutions for health and life sciences companies to optimize clinical development, commercialization, and maximize patient access. |
5,706 | |||
| 36 |
Invisible Technologiesinvisible.co
An operations innovation company leveraging AI, automation, and a global team to transform how companies are built and run more efficiently |
5,099 | |||
| 37 |
Skadden, Arps, Slate, Meagher & Flom LLP and Affiliatesskadden.com
Provides innovative legal advice and solutions for complex transactions, litigation, regulatory matters, serving diverse clients globally with collaborative expertise. |
4,946 | |||
| 38 |
CohnReznickcohnreznick.com
Provides assurance, advisory, and tax services with deep industry knowledge to optimize performance, manage risk, and maximize value globally. |
4,923 | |||
| 39 |
Havas Creative Networkhavascreative.com
Innovative global communications network offering custom solutions through a connected ecosystem of multidisciplinary teams, with access to entertainment and culture |
4,874 | |||
| 40 |
Guy Carpenterguycarp.com
specializes in global risk advisory and reinsurance brokerage, providing expert solutions to clients worldwide for managing complex risks. |
4,861 | |||
| 41 |
NFP, an Aon companynfp.com
A global company offering specialized expertise in property & casualty brokering, benefits consulting, wealth management, and retirement plan advising Empowering clients with tailored solutions |
4,758 | |||
| 42 |
Presidiopresidio.com
A technology and innovation-driven company with expertise in automation, security, networking, digital transformation, and cloud computing, providing custom applications and managed services globally |
4,355 | |||
| 43 |
24 Seven Talent24seventalent.com
A specialized recruitment agency building top full-time and freelance teams for leading brands in marketing, digital, creative, and technology sectors, with specialized subsidiaries supporting clients |
4,321 | |||
| 44 |
STVstvinc.com
A professional services company specializing in transportation systems, building design, water systems, and other essential infrastructure for public and private sector clients |
4,301 | |||
| 45 |
Weber Shandwickwebershandwick.com
Global strategic communications agency specializing in earned media, creative brand strategies, and award-winning public relations services worldwide. |
4,093 | |||
| 46 |
ReSource Proresourcepro.com
An insurance-focused business solutions company that integrates people, process, technology, and data analytics to help carriers, brokers, and MGAs improve profitability and efficiency |
4,073 | |||
| 47 |
Bursonbursonglobal.com
Global communications firm specializing in reputation management to create competitive advantage and long-term value for clients worldwide. |
3,922 | |||
| 48 |
AlixPartnersalixpartners.com
AlixPartners helps businesses globally with urgent challenges, specializing in performance improvement, transformation, restructuring, and risk mitigation through action-oriented, results-driven approaches |
3,915 | |||
| 49 |
Simpson Thacher & Bartlett LLPstblaw.com
A leading international law firm with over 1,000 lawyers, providing legal advice and transactional services worldwide from its headquarters in New York |
3,914 | |||
| 50 |
Evercoreevercore.com
Global independent investment banking advisory firm providing mergers, acquisitions, restructuring, capital markets, equity research, and wealth management services to institutional and high-net-worth clients. |
3,888 | |||
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 |
Ropes & Gray LLPropesgray.com
A global law firm with approximately 1,500 lawyers serving clients in major business hubs, known for leading practices in various legal areas |
3,647 | |||
| 52 |
The Legal Aid Societylegalaidnyc.org
Provide free legal services to low-income individuals, including criminal defense, civil legal services, and juvenile rights representation in Family Court |
3,320 | |||
| 53 |
Spark Foundrysparkfoundryww.com
A global media agency under Publicis Media, combining innovation with industry talent to deliver award-winning campaigns worldwide |
3,284 | |||
| 54 | 3,092 | ||||
| 55 | 3,080 | ||||
| 56 |
Oppenheimer & Co. Inc.oppenheimer.com
Provides wealth management, capital markets, and investment banking solutions, offering customized strategies to advance society and improve communities. |
3,353 | |||
| 57 | 2,957 | ||||
| 58 |
Weil, Gotshal & Manges LLPweil.com
With a history dating back to 1931, this firm offers top-tier legal services with over 1,100 lawyers across three continents Specializing in various practice areas |
2,952 | |||
| 59 |
Citrin Coopermancitrincooperman.com
Professional services provider offering attest, tax, advisory, and business consulting services in an alternative practice structure as independent member firms of a global network |
2,938 | |||
| 60 |
Russell Reynolds Associatesrussellreynolds.com
Global consultants assisting public and private organizations with board effectiveness, executive assessment, and building transformational leadership teams to navigate complex business trends. |
2,934 | |||
| 61 |
Davis Polk & Wardwell LLPdavispolk.com
Global law firm providing sophisticated legal advice and practical solutions for complex business and legal challenges worldwide. |
2,926 | |||
| 62 |
Wilson Elserwilsonelser.com
A leading litigation defense law firm with over 1,000 attorneys nationwide handling over 100,000 defense and coverage matters in various courts |
2,902 | |||
| 63 |
Real Chemistryrealchemistry.com
The company enhances healthcare commercial success through AI-powered experiences, putting the customer at the center and aiming to transform healthcare |
2,858 | |||
| 64 |
Paul, Weiss, Rifkind, Wharton & Garrison LLPpaulweiss.com
A premier law firm with over 1,000 diverse lawyers providing innovative solutions for complex legal and business challenges to clients worldwide |
2,838 | |||
| 65 |
Cumming Groupcumming-group.com
Specializes in project, cost, and construction management services across multiple sectors, delivering tailored solutions globally through extensive expertise. |
2,825 | |||
| 66 |
FGS Globalfgsglobal.com
Global firm specializing in stakeholder strategy, enabling clients to lead, influence, and succeed during critical and decisive moments. |
2,788 | |||
| 67 |
Cleary Gottlieb Steen & Hamilton LLPclearygottlieb.com
International law firm providing high-quality legal services with a focus on innovation, diversity, and client-centered solutions worldwide. |
2,716 | |||
| 68 |
Arcesiumarcesium.com
A leading fintech company providing advanced data, operations, and analytics platform for financial institutions, optimizing investment lifecycle with industry-specific capabilities |
2,704 | |||
| 69 |
Cantor Fitzgeraldcantor.com
Global financial services firm specializing in equity and fixed income capital markets, investment banking, commercial real estate finance, and asset management technology. |
2,655 | |||
| 70 | 2,654 | ||||
| 71 |
Interpublic Group (IPG)omc.com
A values-based marketing solutions provider with globally recognized brands in advertising, communications, and data-driven creativity, generating over $10 billion in revenue |
2,620 | |||
| 72 |
Jackson Lewis P.C.jacksonlewis.com
A team of over 950 attorneys specializing in labor and employment law, providing proactive strategies and solutions to foster diverse and engaged workforces |
2,592 | |||
| 73 |
J.S. Held LLCjsheld.com
Global consulting firm providing expertise in technical, scientific, financial, and strategic matters to help clients realize value and mitigate risk worldwide |
2,442 | |||
| 74 |
Willkie Farr & Gallagher LLPwillkie.com
Provides innovative and sophisticated legal services across multiple industries and markets with a global team of approximately 1,300 lawyers. |
2,420 | |||
| 75 |
Axiomaxiomlaw.com
Innovative legal services provider offering cost-effective solutions for global legal departments across various industries with high client satisfaction |
2,398 | |||
| 76 |
Marlabsmarlabs.com
Delivers complex technology solutions through data engineering, advanced analytics, and digital product engineering to scale intelligent solutions for diverse Fortune 500 industries. |
2,345 | |||
| 77 |
Hill & Knowltonhillandknowlton.com
providing strategic communications services worldwide, managing reputations, engaging stakeholders, and delivering innovative campaigns across diverse industries and sectors |
2,276 | |||
| 78 |
Proskauer Rose LLPproskauer.com
A global law firm with 800+ lawyers offering strategic legal representation to leading organizations, corporations, and industry-redefining companies worldwide |
2,269 | |||
| 79 |
Hazen and Sawyerhazenandsawyer.com
A company focused on providing safe drinking water and controlling water pollution through planning, design, and construction management of water-related projects |
2,261 | |||
| 80 |
Skidmore, Owings & Merrill (SOM)som.com
A leading design firm creating environmentally-advanced solutions for a better future, recognized for carbon neutrality and commitment to equality |
2,247 | |||
| 81 |
UHY-USuhy-us.com
UHY provides audit, tax, consulting and advisory services to middle market clients, offering innovative solutions tailored to their business challenges globally |
2,223 | |||
| 82 |
Ankuraankura.com
Ankura Consulting Group provides expert services and solutions globally to help clients navigate critical challenges and opportunities in various areas |
2,151 | |||
| 83 |
Thornton Tomasettithorntontomasetti.com
The company applies scientific and engineering principles to solve various challenges in industries like building design and construction, with a focus on innovation |
2,145 | |||
| 84 |
CHA Consulting, Inc.chasolutions.com
Innovative engineering consulting and construction management firm offering a wide range of planning, design, and project management services to clients in North America |
2,144 | |||
| 85 | 2,094 | ||||
| 86 |
Debevoise & Plimptondebevoise.com
A premier law firm with market-leading practices, global perspective, and strong New York roots, delivering effective solutions and distinctive collaboration to clients' legal challenges |
2,089 | |||
| 87 |
Moelis & Companymoelis.com
Provides strategic financial advice and solutions to corporations, governments, and sponsors across mergers, restructurings, and capital markets worldwide. |
2,042 | |||
| 88 |
Pride Globalprideglobal.com
An integrated human capital solutions firm with diverse HR services globally and a focus on treating stakeholders exceptionally |
2,019 | |||
| 89 |
Pillsbury Winthrop Shaw Pittman LLPpillsburylaw.com
International law firm focusing on technology & media, energy, financial services, and real estate & construction sectors Known for client service, collaboration, and commercial awareness |
2,016 | |||
| 90 |
Ogilvy Public Relationsogilvypr.com
A global communications leader with over 85 offices worldwide, consistently recognized for creative excellence and innovative PR campaigns |
1,999 | |||
| 91 |
BIG - Bjarke Ingels Groupbig.dk
A global architecture firm based in multiple cities, specializing in innovative and pragmatic urban design, research, and development, with a focus on parental leave support |
1,994 | |||
| 92 | 1,952 | ||||
| 93 |
SG Analyticssganalytics.com
Global consulting firm delivering data and AI solutions through research and technology for industries including capital markets, BFSI, and media sectors. |
1,939 | |||
| 94 |
BBDO Worldwidebbdo.com
Award-winning ad agency with global reach and passionate belief in creativity to drive brand growth through transformative consumer experiences |
1,913 | |||
| 95 |
UnitedLexunitedlex.com
A data and professional services company helping law firms and legal departments innovate through digital solutions, compliance, and legal operations |
1,899 | |||
| 96 |
maisonmaisonthats.us
This company specializes in transforming and building brands through strategy, creative design, brand identity, copywriting, and website development |
1,890 | |||
| 97 |
CT Corporationwolterskluwer.com
A global leader providing solutions for legal compliance, financial management, and corporate services to professionals and small businesses worldwide |
1,877 | |||
| 98 |
Materialmaterialplus.io
The company provides insights, marketing, and technology services to create customer-centric business models and experiences for brands and companies |
1,852 | |||
| 99 |
DRIVER Mediadriver.tv
An independent content production studio specializing in creating video content for leading brands with a focus on digital media and branded content distribution |
1,802 | |||
| 100 |
ACA Groupacaglobal.com
Provides governance, risk, and compliance advisory services alongside regulatory technology platforms to help financial institutions manage oversight, surveillance, and global reporting requirements. |
1,766 | |||
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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.
More company lists in New York State
- The largest companies in New York State 12,432
- Multinational companies in New York State 2,216
- Financial services firms in New York State 1,272
- Financial Services companies in New York State 1,076
- SaaS companies in New York State 1,060
- Real Estate companies in New York State 789
- Venture capital and private equity firms in New York State 757
- Software Development companies in New York State 696
- Education providers in New York State 656
- AI companies in New York State 585
- IT Services and IT Consulting companies in New York State 570
- Retail chains in New York State 559
- Healthcare providers in New York State 494
- Companies with a mobile app in New York State 491
- Subscription businesses in New York State 485
- Consulting firms in New York State 474
- Advertising Services companies in New York State 473
- IT services companies in New York State 468
- Investment Management companies in New York State 457
- Marketing and communications agencies in New York State 449
- Companies with in-house R&D in New York State 419
- Hospitals and Health Care companies in New York State 408
- Venture Capital and Private Equity Principals companies in New York State 398
- Manufacturers in New York State 398
The same list elsewhere in United States
- Professional services firms in the United States 7,078
- Professional services firms in California 880
- Professional services firms in Texas 629
- Professional services firms in Florida 375
- Professional services firms in Virginia 344
- Professional services firms in Illinois 339
- Professional services firms in Massachusetts 249
- Professional services firms in New Jersey 249
- Professional services firms in Georgia 246
- Professional services firms in Pennsylvania 245
- Professional services firms in Ohio 195
- Professional services firms in Maryland 176
- Professional services firms in Michigan 172
- Professional services firms in Washington State 163
- Professional services firms in North Carolina 142
- Professional services firms in Alabama 135
- Professional services firms in Minnesota 125
- Professional services firms in New York 735
- Professional services firms in Chicago 196
- Professional services firms in Houston 156
- Professional services firms in Atlanta 143
- Professional services firms in San Francisco 130
- Professional services firms in Washington 109
- Professional services firms in Los Angeles 108