Tamtam Start free

The 30 largest professional services firms in Dallas

Tamtam tracks 107 professional services firms headquartered in Dallas. This list ranks the 30 largest by number of employees on LinkedIn, led by CBRE, Jacobs and AECOM. Their median headcount is 1,677. Half of them were founded in 1991 or later.

馃嚭馃嚫 Dallas30 companiesUpdated Nov 11, 2026

This list features professional services firms based in Dallas, encompassing a range of sectors from real estate and engineering to financial and IT services. The companies are predominantly large organizations, with several employing tens of thousands of people globally, alongside some more recently founded firms specializing in digital technology and healthcare.

Key companies include CBRE, a major real estate firm, Jacobs, which offers solutions for complex challenges across various industries, and AECOM, a global infrastructure consulting firm. Ryan provides global tax services, while AMN Healthcare specializes in talent solutions for healthcare. Brillio is a digital technology service provider.

#CompanyIndustryHeadquarters EmployeesFounded
1
CBREcbre.com

A real estate company providing comprehensive services and insights to empower clients in maximizing opportunities and success in the industry

Real Estate 馃嚭馃嚫 Dallas 75,008 n/a
2
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.

Business Consulting and Services 馃嚭馃嚫 Dallas 68,461 1947
3
AECOMaecom.com

A global infrastructure consulting firm providing professional services in advisory, planning, design, engineering, and construction management for public and private-sector clients

Civil Engineering 馃嚭馃嚫 Dallas 57,963 n/a
4
CBRE Global Workplace Solutions (GWS)cbre.com

Partner with clients worldwide to deliver tailored workplace solutions addressing unique organizational needs and driving strategic business outcomes.

Real Estate 馃嚭馃嚫 Dallas 20,430 1984
5
Ryanryan.com

Global tax services provider with award-winning software, offering federal, state, local, and international tax services, advocacy, compliance, and technology solutions

Financial Services 馃嚭馃嚫 Dallas 7,349 1991
6
AMN Healthcareamnhealthcare.com

A leader in total talent solutions for healthcare organizations, providing access to quality professionals and innovative recruitment strategies to optimize workforce efficiency and patient outcomes

Staffing and Recruiting 馃嚭馃嚫 Dallas 6,833 n/a
7
Brilliobrillio.com

A digital technology service provider helping Fortune 1000 companies innovate with customer experience transformation, data analytics, AI, platform engineering, cloud infrastructure, and security

IT Services and IT Consulting 馃嚭馃嚫 Dallas 5,634 2014
8
HKS, Inc.hksinc.com

A global architecture and design firm with a focus on sustainability, creativity, and delivering elegant solutions for clients and collaborators

Architecture and Planning 馃嚭馃嚫 Dallas 2,916 1939
9
RGPrgp.com

Global professional services firm providing on-demand talent, consulting, and outsourced services to help C-suite leaders solve challenges in digital transformation, data, and cloud.

Business Consulting and Services 馃嚭馃嚫 Dallas 2,779 1996
10
Ventra Healthventrahealth.com

Specializing in technology-driven revenue cycle management for hospital-based physician specialties, offering world-class business solutions to optimize financial operations

Hospitals and Health Care 馃嚭馃嚫 Dallas 2,425 2021
11
Lincoln Property Companylpc.com

A global real estate services company with a diverse portfolio, offering management, leasing, development, and advisory services for commercial properties worldwide

Real Estate 馃嚭馃嚫 Dallas 2,328 1965
12
Trinity Consultantstrinityconsultants.com

A global EH&S firm offering services in regulatory compliance, ecology, water, built environments, and life sciences since 1974

Environmental Services 馃嚭馃嚫 Dallas 2,195 1974
13
AECOM (incorporating Davis Langdon, An AECOM Company)aecom.com

A company acquired by AECOM in 2010, now operating under AECOM's umbrella Follow AECOM's LinkedIn page for more information

Construction 馃嚭馃嚫 Dallas 2,102 n/a
14
Rocket Stationrocketstation.com

The company helps real estate businesses grow by documenting successful processes and finding virtual teammates, enabling affordable hiring and controlled growth

Staffing and Recruiting 馃嚭馃嚫 Dallas 1,887 2018
15
Haynes and Boone, LLPhaynesboone.com

An international corporate law firm with offices in the US, UK, Mexico, and China, offering legal services in energy, technology, finance, and private equity

Law Practice 馃嚭馃嚫 Dallas 1,677 1970

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.

Get more companies, free
16
Corgancorgan.com

A leading architecture and design firm, prioritizing client and user needs, specializing in six market sectors with a focus on user-driven design

Architecture and Planning 馃嚭馃嚫 Dallas 1,564 1938
17
GlobalStepglobalstep.com

GlobalStep offers a range of services to help clients develop, test, localize, and monetize digital products, with a focus on gaming industry

Computer Games 馃嚭馃嚫 Dallas 1,557 2006
18
Riveronriveron.com

National business advisory partner elevating performance and expanding possibilities through integrated teams with industry perspective and deep functional expertise

Business Consulting and Services 馃嚭馃嚫 Dallas 1,549 n/a
19
Stream Realty Partnersstreamrealty.com

A rapidly-growing full-service commercial real estate company with over 350M+ sq ft of assignments and $69B in annual transactions, focused on client service and talent retention

Real Estate 馃嚭馃嚫 Dallas 1,548 1996
20
Pinnacle Group, Inc.pinnacle1.com

A leading provider of information technology and workforce solutions, offering staffing, consulting, managed services, payrolling, and compliance services across the US and Canada

IT Services and IT Consulting 馃嚭馃嚫 Dallas 1,529 1996
21
HFFjll.com

A leading professional services firm specializing in real estate and investment management, shaping the future of real estate with advanced technology

Real Estate 馃嚭馃嚫 Dallas 1,325 n/a
22
GDT - General Datatechgdt.com

An international IT solutions provider offering consulting, designing, deploying, and managing services for businesses, government, and healthcare, specializing in advanced technology solutions

IT Services and IT Consulting 馃嚭馃嚫 Dallas 1,317 1996
23
AMN Healthcare Alliedamnhealthcare.com

Healthcare workforce solutions partner optimizing labor, increasing margins, and expanding care reach through innovative recruitment services and diverse talent inclusion

Staffing and Recruiting 馃嚭馃嚫 Dallas 1,227 n/a
24
The Beck Groupbeckgroup.com

The company integrates architecture, construction, sustainability, and technology to create groundbreaking, innovative, and beautiful buildings that impact people's lives

Construction 馃嚭馃嚫 Dallas 1,170 1912
25
Jackson Walker LLPjw.com

Texas-based law firm providing comprehensive legal services to a range of clients, from Fortune 500 companies to small businesses and nonprofits, nationally and internationally

Law Practice 馃嚭馃嚫 Dallas 1,096 n/a
26
BBG Inc.bbgres.com

A nationally recognized valuation firm offering personalized service, industry expertise, and comprehensive commercial property valuation products tailored to client needs

Business Consulting and Services 馃嚭馃嚫 Dallas 1,040 2009
27
AMN Healthcare Physician Solutionsamnhealthcare.com

AMN Physician Solutions is a leading healthcare workforce solutions provider and the largest healthcare staffing company in the United States

Staffing and Recruiting 馃嚭馃嚫 Dallas 939 1987
28
American Mobile Healthcareamericanmobile.com

A leading recruitment agency in the travel healthcare industry offering competitive pay, benefits, housing, and continuing education for healthcare professionals nationwide

Staffing and Recruiting 馃嚭馃嚫 Dallas 893 1985
29
Springline Advisoryspringlineadvisory.com

Springline Advisory is a financial and business advisory firm focused on reshaping the accounting industry through innovative value creation and scaling strategies

Business Consulting and Services 馃嚭馃嚫 Dallas 879 2023
30
ACS Healthcare Provider Solutionsacs-hcs.com

Specializing in healthcare consulting, we provide expertise in IT, clinical workflows, administration, and revenue cycle operations to help providers navigate industry challenges

IT Services and IT Consulting 馃嚭馃嚫 Dallas 829 n/a

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

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 Dallas

The same list elsewhere in United States