# 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.

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.

🇺🇸 Dallas · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [CBRE](https://www.tamtam.ai/c/cbre) (cbre.com)<br>A real estate company providing comprehensive services and insights to empower clients in maximizing opportunities and success in the industry | Real Estate | 🇺🇸 Dallas | 75,008 |  |
| 2 | [Jacobs](https://www.tamtam.ai/c/jacobs) (jacobs.com)<br>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 | 🇺🇸 Dallas | 68,461 | 1947 |
| 3 | [AECOM](https://www.tamtam.ai/c/aecom) (aecom.com)<br>A global infrastructure consulting firm providing professional services in advisory, planning, design, engineering, and construction management for public and private-sector clients | Civil Engineering | 🇺🇸 Dallas | 57,963 |  |
| 4 | [CBRE Global Workplace Solutions (GWS)](https://www.tamtam.ai/c/cbre-global-workplace-solutions-gws) (cbre.com)<br>Partner with clients worldwide to deliver tailored workplace solutions addressing unique organizational needs and driving strategic business outcomes. | Real Estate | 🇺🇸 Dallas | 20,430 | 1984 |
| 5 | [Ryan](https://www.tamtam.ai/c/ryan) (ryan.com)<br>Global tax services provider with award-winning software, offering federal, state, local, and international tax services, advocacy, compliance, and technology solutions | Financial Services | 🇺🇸 Dallas | 7,349 | 1991 |
| 6 | [AMN Healthcare](https://www.tamtam.ai/c/amn-healthcare) (amnhealthcare.com)<br>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 | 🇺🇸 Dallas | 6,833 |  |
| 7 | [Brillio](https://www.tamtam.ai/c/brillio) (brillio.com)<br>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 | 🇺🇸 Dallas | 5,634 | 2014 |
| 8 | [HKS, Inc.](https://www.tamtam.ai/c/hks-inc) (hksinc.com)<br>A global architecture and design firm with a focus on sustainability, creativity, and delivering elegant solutions for clients and collaborators | Architecture and Planning | 🇺🇸 Dallas | 2,916 | 1939 |
| 9 | [RGP](https://www.tamtam.ai/c/rgp) (rgp.com)<br>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 | 🇺🇸 Dallas | 2,779 | 1996 |
| 10 | [Ventra Health](https://www.tamtam.ai/c/ventra-health) (ventrahealth.com)<br>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 | 🇺🇸 Dallas | 2,425 | 2021 |
| 11 | [Lincoln Property Company](https://www.tamtam.ai/c/lincoln-property-company-dallas) (lpc.com)<br>A global real estate services company with a diverse portfolio, offering management, leasing, development, and advisory services for commercial properties worldwide | Real Estate | 🇺🇸 Dallas | 2,328 | 1965 |
| 12 | [Trinity Consultants](https://www.tamtam.ai/c/trinity-consultants) (trinityconsultants.com)<br>A global EH&S firm offering services in regulatory compliance, ecology, water, built environments, and life sciences since 1974 | Environmental Services | 🇺🇸 Dallas | 2,195 | 1974 |
| 13 | [AECOM (incorporating Davis Langdon, An AECOM Company)](https://www.tamtam.ai/c/aecom-incorporating-davis-langdon-an-aecom-company) (aecom.com)<br>A company acquired by AECOM in 2010, now operating under AECOM's umbrella Follow AECOM's LinkedIn page for more information | Construction | 🇺🇸 Dallas | 2,102 |  |
| 14 | [Rocket Station](https://www.tamtam.ai/c/rocket-station) (rocketstation.com)<br>The company helps real estate businesses grow by documenting successful processes and finding virtual teammates, enabling affordable hiring and controlled growth | Staffing and Recruiting | 🇺🇸 Dallas | 1,887 | 2018 |
| 15 | [Haynes and Boone, LLP](https://www.tamtam.ai/c/haynes-and-boone-llp) (haynesboone.com)<br>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 | 🇺🇸 Dallas | 1,677 | 1970 |
| 16 | [Corgan](https://www.tamtam.ai/c/corgan) (corgan.com)<br>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 | 🇺🇸 Dallas | 1,564 | 1938 |
| 17 | [GlobalStep](https://www.tamtam.ai/c/globalstep) (globalstep.com)<br>GlobalStep offers a range of services to help clients develop, test, localize, and monetize digital products, with a focus on gaming industry | Computer Games | 🇺🇸 Dallas | 1,557 | 2006 |
| 18 | [Riveron](https://www.tamtam.ai/c/riveron) (riveron.com)<br>National business advisory partner elevating performance and expanding possibilities through integrated teams with industry perspective and deep functional expertise | Business Consulting and Services | 🇺🇸 Dallas | 1,549 |  |
| 19 | [Stream Realty Partners](https://www.tamtam.ai/c/stream-realty-partners) (streamrealty.com)<br>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 | 🇺🇸 Dallas | 1,548 | 1996 |
| 20 | [Pinnacle Group, Inc.](https://www.tamtam.ai/c/pinnacle-group-inc) (pinnacle1.com)<br>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 | 🇺🇸 Dallas | 1,529 | 1996 |
| 21 | [HFF](https://www.tamtam.ai/c/hff) (jll.com)<br>A leading professional services firm specializing in real estate and investment management, shaping the future of real estate with advanced technology | Real Estate | 🇺🇸 Dallas | 1,325 |  |
| 22 | [GDT - General Datatech](https://www.tamtam.ai/c/gdt-general-datatech) (gdt.com)<br>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 | 🇺🇸 Dallas | 1,317 | 1996 |
| 23 | [AMN Healthcare Allied](https://www.tamtam.ai/c/amn-healthcare-allied) (amnhealthcare.com)<br>Healthcare workforce solutions partner optimizing labor, increasing margins, and expanding care reach through innovative recruitment services and diverse talent inclusion | Staffing and Recruiting | 🇺🇸 Dallas | 1,227 |  |
| 24 | [The Beck Group](https://www.tamtam.ai/c/the-beck-group) (beckgroup.com)<br>The company integrates architecture, construction, sustainability, and technology to create groundbreaking, innovative, and beautiful buildings that impact people's lives | Construction | 🇺🇸 Dallas | 1,170 | 1912 |
| 25 | [Jackson Walker LLP](https://www.tamtam.ai/c/jackson-walker-llp) (jw.com)<br>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 | 🇺🇸 Dallas | 1,096 |  |
| 26 | [BBG Inc.](https://www.tamtam.ai/c/bbg-inc) (bbgres.com)<br>A nationally recognized valuation firm offering personalized service, industry expertise, and comprehensive commercial property valuation products tailored to client needs | Business Consulting and Services | 🇺🇸 Dallas | 1,040 | 2009 |
| 27 | [AMN Healthcare Physician Solutions](https://www.tamtam.ai/c/amn-healthcare-physician-solutions) (amnhealthcare.com)<br>AMN Physician Solutions is a leading healthcare workforce solutions provider and the largest healthcare staffing company in the United States | Staffing and Recruiting | 🇺🇸 Dallas | 939 | 1987 |
| 28 | [American Mobile Healthcare](https://www.tamtam.ai/c/american-mobile-healthcare) (americanmobile.com)<br>A leading recruitment agency in the travel healthcare industry offering competitive pay, benefits, housing, and continuing education for healthcare professionals nationwide | Staffing and Recruiting | 🇺🇸 Dallas | 893 | 1985 |
| 29 | [Springline Advisory](https://www.tamtam.ai/c/springline-advisory) (springlineadvisory.com)<br>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 | 🇺🇸 Dallas | 879 | 2023 |
| 30 | [ACS Healthcare Provider Solutions](https://www.tamtam.ai/c/acs-healthcare-provider-solutions) (acs-hcs.com)<br>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 | 🇺🇸 Dallas | 829 |  |

## 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 12, 2026.

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Source: https://www.tamtam.ai/l/professional-services-firms-dallas