This selection of professional services firms in Texas showcases large, established companies. Key players include CBRE, a real estate company; Jacobs, delivering solutions for complex challenges across various sectors; Halliburton, focused on maximizing energy asset value; and AECOM, a global infrastructure consulting firm. These companies predominantly operate in real estate, business consulting, and engineering.
A notable pattern is the concentration of headquarters in Dallas, with several prominent firms based there. Many of these companies are also well-established, with founding dates stretching back to the early and mid-20th century, indicating a long-standing presence in their respective industries.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 75,008 | ||||
| 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. |
68,461 | |||
| 3 |
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 | |||
| 4 | 57,963 | ||||
| 5 |
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 | |||
| 6 | 31,433 | ||||
| 7 |
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. |
20,430 | |||
| 8 |
Infosys Ltdinfosys.com
Global leader in next-generation digital services and consulting, enabling clients worldwide to navigate digital transformation with AI-powered solutions and agile digital delivery for performance and customer satisfaction |
17,979 | |||
| 9 |
Movatemovate.com
A digital technology and customer experience services company focused on innovation and client outcomes, with a global network of diverse talent |
13,112 | |||
| 10 |
SoftServesoftserveinc.com
A premier IT consulting and digital services provider, specializing in digital engineering, data analytics, cloud services, and AI/ML solutions for various industries globally |
10,324 | |||
| 11 |
WIS Internationalwisintl.com
A global leader in inventory and data collection services, offering physical counting, merchandising, and space optimization solutions to retailers worldwide |
8,902 | |||
| 12 |
iSoftStoneisoftstoneinc.com
Global IT service and consulting company specializing in web development, software testing, data management, digital experience, and AI solutions. |
7,385 | |||
| 13 | 7,349 | ||||
| 14 |
Rackspace Technologyrackspace.com
Specializing in multicloud solutions, we assist global companies in overcoming challenges by providing custom cloud services for improved performance |
7,046 | |||
| 15 |
Vizient, Incvizientinc.com
A leading healthcare performance improvement company, serving over 50% of acute care providers with expertise, analytics, advisory services, and a large contract portfolio |
6,999 | |||
| 16 |
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 |
6,833 | |||
| 17 |
American Bureau of Shipping (ABS)ww2.eagle.org
Establishes safety standards and technical solutions for marine and offshore industries through ship classification, engineering research, and global regulatory compliance support. |
6,833 | |||
| 18 |
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 |
5,634 | |||
| 19 |
Asset Livingassetliving.com
A third-party management firm specializing in diverse real estate properties across the US, driving innovation and results for clients and communities |
5,216 | |||
| 20 |
Acurenacuren.com
Provider of technology-enabled asset protection solutions for energy, industrial, and public infrastructures Offers inspection, NDT, engineering services, and more |
4,673 | |||
| 21 |
Pinnaclepinnacleinfotech.com
Delivers transformative build solutions, connecting design, engineering, construction, and O&M through advanced Digital Twins, focusing on performance, precision, and productivity. |
4,323 | |||
| 22 | 4,293 | ||||
| 23 |
TEAM, Inc.teaminc.com
A leading industrial services provider offering specialized construction, maintenance, and monitoring services for pressurized piping systems across diverse industries worldwide |
4,235 | |||
| 24 |
Integreonintegreon.com
A trusted provider of outsourced legal, creative, and business services globally, helping clients enhance business performance through expert support |
4,140 | |||
| 25 |
MOURI Techmouritech.com
Global Enterprise Solutions Provider partnering with Fortune 500 companies, offering innovative services in enterprise transformation, cloud strategy, analytics, and application development |
3,521 | |||
| 26 |
Southwest Research Instituteswri.org
Independent nonprofit organization specializing in creating and transferring technology in engineering and physical sciences, with laboratories and facilities across multiple locations. |
3,135 | |||
| 27 |
Bounteousbounteous.com
The company collaborates with leading brands to develop innovative digital experiences that drive transformation and growth |
3,068 | |||
| 28 |
Superior Energy Servicessuperiorenergy.com
A global oilfield products and services company offering rental, well servicing, engineered solutions, and expert consultative services for oil & gas exploration and production companies worldwide |
2,946 | |||
| 29 |
HKS, Inc.hksinc.com
A global architecture and design firm with a focus on sustainability, creativity, and delivering elegant solutions for clients and collaborators |
2,916 | |||
| 30 |
Transwesterntranswestern.com
Privately held real estate company delivering personalized services, innovative solutions, and driving value for clients globally through strategic alliances |
2,833 | |||
| 31 | 2,779 | ||||
| 32 |
KBR Careerscareers.kbr.com
Global provider of science, technology, and engineering solutions to governments and companies, delivering value-added services and operations in 33 countries |
2,732 | |||
| 33 |
Key Energy Serviceskeyenergy.com
Key Energy Services, headquartered in Houston, provides energy production solutions and services to E&P companies, optimizing well production for long-term success |
2,669 | |||
| 34 |
CDI Engineering Solutionstataconsultingengineers.com
Engineering services provider for energy, chemicals, and infrastructure sectors Specializing in project planning, design, commissioning, and construction management for successful outcomes |
2,633 | |||
| 35 |
Ventra Healthventrahealth.com
Specializing in technology-driven revenue cycle management for hospital-based physician specialties, offering world-class business solutions to optimize financial operations |
2,425 | |||
| 36 |
ThoughtFocusthoughtfocus.com
Innovative technology solutions provider helping companies in various sectors achieve faster growth through executional excellence and risk mitigation |
2,357 | |||
| 37 | 2,353 | ||||
| 38 |
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 |
2,328 | |||
| 39 |
CLEAResultclearesult.com
Leading provider of energy efficiency and sustainability solutions in North America, focused on transitioning to a carbon-neutral future through local partnerships and innovative technology |
2,266 | |||
| 40 |
Airswiftairswift.com
Supporting STEM professionals in technology and engineering with job placement services, boasting unrivaled talent pool and global presence in 60 offices |
2,223 | |||
| 41 |
Trinity Consultantstrinityconsultants.com
A global EH&S firm offering services in regulatory compliance, ecology, water, built environments, and life sciences since 1974 |
2,195 | |||
| 42 |
Personivpersoniv.com
Optimize finance & accounting teams with cost-effective offshore solutions, freeing up resources for strategic work while ensuring top-quality service and compliance |
2,188 | |||
| 43 |
Weaverweaver.com
A Houston-based firm providing top accounting services, including assurance, tax, risk advisory, IT advisory, energy compliance, consulting, and specialty tax services |
2,105 | |||
| 44 |
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 |
2,102 | |||
| 45 |
Pape-Dawsonpape-dawson.com
A well-established company providing civil engineering, surveying, GIS, and environmental services with a focus on employee growth and community impact |
2,040 | |||
| 46 |
TTEC Digitalttecdigital.com
A global leader in customer experience orchestration, leveraging technology and empathy with expertise in CX strategy, data analytics, and AI |
1,983 | |||
| 47 |
ABS Groupabs-group.com
Provider of data-driven risk and reliability solutions for critical assets in marine, offshore, oil, gas, chemical, government, and industrial sectors worldwide |
1,966 | |||
| 48 |
Crederacredera.com
Global consultancy bridging marketing ambition and technical execution through data and technology services to accelerate growth and build lasting transformations for brands. |
1,942 | |||
| 49 |
OLAolasustainability.com
An Austin-based architecture practice focusing on sustainable design, offering project-specific strategies that integrate clients' design objectives and sustainability goals through a collaborative team approach |
1,933 | |||
| 50 |
Arganoargano.com
Global digital consultancy specializing in connecting design and delivery for business transformation, enhancing commercial agility, profitability, customer experience, and growth |
1,896 | |||
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 |
Rocket Stationrocketstation.com
The company helps real estate businesses grow by documenting successful processes and finding virtual teammates, enabling affordable hiring and controlled growth |
1,887 | |||
| 52 |
BG Staffingbgsf.com
A diversified consulting and staffing company offering workforce solutions in property management, consulting, IT, finance & accounting, with multiple awards for excellence |
1,822 | |||
| 53 |
Improvingimproving.com
Improving is committed to fostering a positive work culture through teamwork, excellence, and fun, while supporting the Conscious Capitalism movement |
1,787 | |||
| 54 |
Vinson & Elkinsconnect.velaw.com
providing expert legal counsel and innovative solutions to leading companies across various industries, focusing on complex matters and client trust |
1,786 | |||
| 55 |
IT Convergenceitconvergence.com
Global Oracle Platinum Partner offering cloud consulting, managed services, integration, analytics, automation, training, and change management for enterprises. |
1,773 | |||
| 56 |
Consero Globalconseroglobal.com
A pioneer in Finance as a Service, disrupting finance department setup for investment managers and PE/VC backed companies with cutting-edge technology |
1,737 | |||
| 57 |
PSCjd3consultingllc.com
Consulting business offering expertise in engineering, sales, and business development, particularly in mergers and acquisitions (M&A) |
1,713 | |||
| 58 |
CAMScamstex.com
Provides disciplined asset management and operations services, maximizing clients' value through operational performance, commercial optimization, and financial controls A reputation for creativity and flexibility |
1,712 | |||
| 59 |
Pinnaclepinnaclereliability.com
A company based in Pasadena, focused on helping industrial facilities in oil and gas, chemical, mining, and water industries optimize data for improved performance |
1,701 | |||
| 60 |
Audubon Companiesauduboncompanies.com
A leading provider of EPC, consulting, fabrication, and technical services for energy, chemicals, power, infrastructure, and industrial markets with a focus on sustainability |
1,680 | |||
| 61 |
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 |
1,677 | |||
| 62 |
Westwood Professional Serviceswestwoodps.com
A dedicated team with over 50 years of experience creating a better world through energy grid transformation, resilient infrastructure design, and community development |
1,660 | |||
| 63 |
Baker Bottsbakerbotts.com
Global law firm specializing in energy, technology, and life sciences sectors, providing creative legal solutions and demonstrating commitment to excellence since 1840 |
1,633 | |||
| 64 |
Radix - Globalradixeng.com
A global technology solutions company offering innovative industrial solutions to drive transformation, operational excellence, and sustainable value worldwide |
1,619 | |||
| 65 |
Searce Incsearce.com
A company focused on refining, analyzing, and improving to deliver intelligent, impactful, and futuristic business outcomes through passionate employees |
1,587 | |||
| 66 |
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 |
1,564 | |||
| 67 |
GlobalStepglobalstep.com
GlobalStep offers a range of services to help clients develop, test, localize, and monetize digital products, with a focus on gaming industry |
1,557 | |||
| 68 |
Riveronriveron.com
National business advisory partner elevating performance and expanding possibilities through integrated teams with industry perspective and deep functional expertise |
1,549 | |||
| 69 |
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 |
1,548 | |||
| 70 |
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 |
1,529 | |||
| 71 |
AIS Infoaisinfo.com
The company automates processes, improves compliance, and provides cost-effective labor solutions across industries, enabling clients to focus on growth and make data-driven decisions |
1,509 | |||
| 72 |
Everest Groupeverestgrp.com
Provides research-based insights and guidance to help business leaders improve operational performance, navigate market challenges, and drive transformation. |
1,486 | |||
| 73 |
Safran Electronics & Defense, Avionics USA, LLC.safran-group.com
Design, support, maintenance, and sales of avionics products including cockpit displays, autopilot systems, flight controls, and monitoring software for aircraft and helicopters. |
1,481 | |||
| 74 |
The Stronghold Companiesthestrongholdcompanies.com
Provider of safe, efficient, quality solutions for refinery, petrochemical, and midstream industries, utilizing skilled craftsmen and state-of-the-art equipment for cost synergies |
1,466 | |||
| 75 |
Sirius Computer Solutionscdw.com
A nationally recognized IT solution provider with certified teams offering a wide range of technology solutions to meet business needs |
1,459 | |||
| 76 | 1,458 | ||||
| 77 |
Freese and Nicholsfreese.com
Professional planning, consulting, and engineering firm specializing in sustainable water and infrastructure project design and management across the United States. |
1,437 | |||
| 78 |
FPT Americasfptsoftware.com
A leading provider of outsourcing services focused on delivering innovative IT solutions to global clients across various industries |
1,381 | |||
| 79 | 1,366 | ||||
| 80 |
Information Evolution, Inc.informationevolution.com
A boutique outsourcing firm based in South India and Austin, Texas, specializing in maintaining accurate and up-to-date databases for clients |
1,353 | |||
| 81 |
Frank's International N.V.expro.com
Enables customers to make better-informed decisions through data and digital transformation, addressing energy challenges with innovative technology across well construction and production. |
1,340 | |||
| 82 |
Walter P Moorewalterpmoore.com
A team of engineers and innovators designing high-performance structures and infrastructure globally, providing cost-efficient solutions that shape communities worldwide |
1,340 | |||
| 83 |
Shermco Industriesshermco.com
Provider of safe, reliable testing, repair, training, and maintenance for rotating apparatus, electrical power distribution systems and related equipment across various industrial sectors. |
1,336 | |||
| 84 | 1,325 | ||||
| 85 |
alliantgroupalliantglobal.com
A premier consulting and management engineering firm, using science-based methods and a team of 2,000 professionals to deliver solutions for businesses worldwide |
1,325 | |||
| 86 |
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 |
1,317 | |||
| 87 |
Servicios Contablessccalop.com
Servicios Contables provides executive office services, specializing in accounting, located in Houston, Texas |
1,314 | |||
| 88 |
BGE, Inc.bgeinc.com
A consulting firm offering engineering, environmental, surveying, construction management, and planning services for public and private clients nationwide Visit bgeinccom for more information |
1,313 | |||
| 89 | 1,305 | ||||
| 90 |
Rimkusrimkus.com
Global leader in engineering & technical consulting, offering services to various industries worldwide with a focus on resolving accidents, claims, legal disputes, and complex risks |
1,265 | |||
| 91 |
Selfculbertsonresources.com
Specializing in recruiting for IT, finance, energy, clerical/admin, and industrial sectors Placements range from executives to staff, offering various employment arrangements |
1,242 | |||
| 92 |
Programmers.ioprogrammers.io
Global technology company specializing in IBM i and IBM Z modernization, offering AI enablement, cloud migration, and application development with a happiness guarantee. |
1,237 | |||
| 93 |
STRIKEstrikeusa.com
The company provides end-to-end solutions for pipeline, facilities, and energy infrastructure projects, including major capital projects, infrastructure services, and renewable energy initiatives |
1,234 | |||
| 94 |
Career Strategiescsi4jobs.com
Specializing in various industries, we provide executive search, permanent placement, and temporary staffing services to help clients and candidates achieve their goals |
1,229 | |||
| 95 |
AMN Healthcare Alliedamnhealthcare.com
Healthcare workforce solutions partner optimizing labor, increasing margins, and expanding care reach through innovative recruitment services and diverse talent inclusion |
1,227 | |||
| 96 |
Gulf Companiesgulfcompanies.com
A leading provider of engineering and technical services in the global energy industry, focusing on safe, sustainable solutions and client success |
1,218 | |||
| 97 |
Camin Cargo Control Inc.camincargo.com
This company provides inspection, laboratory testing, and additive treatment solutions to the Petroleum Industry with a focus on quality and customer satisfaction |
1,215 | |||
| 98 |
The Beck Groupbeckgroup.com
The company integrates architecture, construction, sustainability, and technology to create groundbreaking, innovative, and beautiful buildings that impact people's lives |
1,170 | |||
| 99 | 1,161 | ||||
| 100 |
The Brandt Companiessouthlandind.com
A leader in designing, building, upgrading, and maintaining energy efficient systems for commercial, institutional, and industrial customers nationwide |
1,158 | |||
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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 11, 2026.
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The same list elsewhere in United States
- Professional services firms in the United States 7,078
- Professional services firms in New York State 955
- Professional services firms in California 880
- 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