# Top 100 professional services firms in Texas

Tamtam tracks 629 professional services firms headquartered in Texas. This list ranks the 100 largest by number of employees on LinkedIn, led by CBRE, Jacobs and Halliburton. Their median headcount is 1,896. Half of them were founded in 1984 or later. The most common headquarters are Houston (30), Dallas (24) and Austin (9).

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.

🇺🇸 Texas · 100 companies · Updated Nov 11, 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 | [Halliburton](https://www.tamtam.ai/c/halliburton) (halliburton.com)<br>Collaborates to engineer solutions maximizing energy asset value, from locating hydrocarbons, managing data, drilling, evaluating, and constructing wells, to optimizing production. | Oil and Gas | 🇺🇸 Houston | 60,277 | 1919 |
| 4 | [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 |  |
| 5 | [Fluor Corporation](https://www.tamtam.ai/c/fluor-corporation) (fluor.com)<br>Global EPC company providing engineering solutions to energy, infrastructure, life sciences, technology, mining, and government sectors with emphasis on innovation and sustainability | Construction | 🇺🇸 Irving | 36,512 | 1912 |
| 6 | [KBR, Inc.](https://www.tamtam.ai/c/kbr-inc) (kbr.com)<br>Providing science, technology, and engineering solutions to governments and companies worldwide addressing significant contemporary challenges and opportunities. | IT Services and IT Consulting | 🇺🇸 Houston | 31,433 |  |
| 7 | [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 |
| 8 | [Infosys Ltd](https://www.tamtam.ai/c/infosys-ltd-richardson) (infosys.com)<br>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 | IT Services and IT Consulting | 🇺🇸 Tx 75082 | 17,979 | 1981 |
| 9 | [Movate](https://www.tamtam.ai/c/movate) (movate.com)<br>A digital technology and customer experience services company focused on innovation and client outcomes, with a global network of diverse talent | IT Services and IT Consulting | 🇺🇸 Plano | 13,112 | 1996 |
| 10 | [SoftServe](https://www.tamtam.ai/c/softserve) (softserveinc.com)<br>A premier IT consulting and digital services provider, specializing in digital engineering, data analytics, cloud services, and AI/ML solutions for various industries globally | IT Services and IT Consulting | 🇺🇸 Austin | 10,324 |  |
| 11 | [WIS International](https://www.tamtam.ai/c/wis-international) (wisintl.com)<br>A global leader in inventory and data collection services, offering physical counting, merchandising, and space optimization solutions to retailers worldwide | Business Consulting and Services | 🇺🇸 Plano | 8,902 | 1953 |
| 12 | [iSoftStone](https://www.tamtam.ai/c/isoftstone) (isoftstoneinc.com)<br>Global IT service and consulting company specializing in web development, software testing, data management, digital experience, and AI solutions. | IT Services and IT Consulting | 🇺🇸 Plano | 7,385 | 2005 |
| 13 | [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 |
| 14 | [Rackspace Technology](https://www.tamtam.ai/c/rackspace-technology) (rackspace.com)<br>Specializing in multicloud solutions, we assist global companies in overcoming challenges by providing custom cloud services for improved performance | IT Services and IT Consulting | 🇺🇸 San Antonio | 7,046 | 1998 |
| 15 | [Vizient, Inc](https://www.tamtam.ai/c/vizient-inc) (vizientinc.com)<br>A leading healthcare performance improvement company, serving over 50% of acute care providers with expertise, analytics, advisory services, and a large contract portfolio | Business Consulting and Services | 🇺🇸 Irving | 6,999 | 1977 |
| 16 | [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 |  |
| 17 | [American Bureau of Shipping (ABS)](https://www.tamtam.ai/c/american-bureau-of-shipping-abs) (ww2.eagle.org)<br>Establishes safety standards and technical solutions for marine and offshore industries through ship classification, engineering research, and global regulatory compliance support. | Maritime Transportation | 🇺🇸 Spring | 6,833 | 1862 |
| 18 | [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 |
| 19 | [Asset Living](https://www.tamtam.ai/c/asset-living) (assetliving.com)<br>A third-party management firm specializing in diverse real estate properties across the US, driving innovation and results for clients and communities | Real Estate | 🇺🇸 Houston | 5,216 | 1986 |
| 20 | [Acuren](https://www.tamtam.ai/c/acuren) (acuren.com)<br>Provider of technology-enabled asset protection solutions for energy, industrial, and public infrastructures Offers inspection, NDT, engineering services, and more | Public Safety | 🇺🇸 Tomball | 4,673 | 1974 |
| 21 | [Pinnacle](https://www.tamtam.ai/c/pinnacle-sugar-land) (pinnacleinfotech.com)<br>Delivers transformative build solutions, connecting design, engineering, construction, and O&M through advanced Digital Twins, focusing on performance, precision, and productivity. | IT Services and IT Consulting | 🇺🇸 Sugar Land | 4,323 | 1991 |
| 22 | [S&B](https://www.tamtam.ai/c/s-and-b) (sbec.com)<br>A leading engineer and constructor for large industrial facilities, providing certainty, expertise, and commitment to deliver purpose-built solutions for clients worldwide | Oil and Gas | 🇺🇸 Houston | 4,293 | 1967 |
| 23 | [TEAM, Inc.](https://www.tamtam.ai/c/team-inc) (teaminc.com)<br>A leading industrial services provider offering specialized construction, maintenance, and monitoring services for pressurized piping systems across diverse industries worldwide | Industrial Machinery Manufacturing | 🇺🇸 Sugar Land | 4,235 | 1973 |
| 24 | [Integreon](https://www.tamtam.ai/c/integreon) (integreon.com)<br>A trusted provider of outsourced legal, creative, and business services globally, helping clients enhance business performance through expert support | Business Consulting and Services | 🇺🇸 Austin | 4,140 | 1998 |
| 25 | [MOURI Tech](https://www.tamtam.ai/c/mouri-tech) (mouritech.com)<br>Global Enterprise Solutions Provider partnering with Fortune 500 companies, offering innovative services in enterprise transformation, cloud strategy, analytics, and application development | IT Services and IT Consulting | 🇺🇸 Irving | 3,521 | 2005 |
| 26 | [Southwest Research Institute](https://www.tamtam.ai/c/southwest-research-institute) (swri.org)<br>Independent nonprofit organization specializing in creating and transferring technology in engineering and physical sciences, with laboratories and facilities across multiple locations. | Research Services | 🇺🇸 San Antonio | 3,135 | 1947 |
| 27 | [Bounteous](https://www.tamtam.ai/c/bounteous) (bounteous.com)<br>The company collaborates with leading brands to develop innovative digital experiences that drive transformation and growth | IT Services and IT Consulting | 🇺🇸 Frisco | 3,068 |  |
| 28 | [Superior Energy Services](https://www.tamtam.ai/c/superior-energy-services) (superiorenergy.com)<br>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 | Oil and Gas | 🇺🇸 Houston | 2,946 |  |
| 29 | [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 |
| 30 | [Transwestern](https://www.tamtam.ai/c/transwestern) (transwestern.com)<br>Privately held real estate company delivering personalized services, innovative solutions, and driving value for clients globally through strategic alliances | Real Estate | 🇺🇸 Houston | 2,833 | 1978 |
| 31 | [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 |
| 32 | [KBR Careers](https://www.tamtam.ai/c/kbr-careers) (careers.kbr.com)<br>Global provider of science, technology, and engineering solutions to governments and companies, delivering value-added services and operations in 33 countries | IT Services and IT Consulting | 🇺🇸 Houston | 2,732 | 1919 |
| 33 | [Key Energy Services](https://www.tamtam.ai/c/key-energy-services) (keyenergy.com)<br>Key Energy Services, headquartered in Houston, provides energy production solutions and services to E&P companies, optimizing well production for long-term success | Oil and Gas | 🇺🇸 Houston | 2,669 | 1977 |
| 34 | [CDI Engineering Solutions](https://www.tamtam.ai/c/cdi-engineering-solutions-houston) (tataconsultingengineers.com)<br>Engineering services provider for energy, chemicals, and infrastructure sectors Specializing in project planning, design, commissioning, and construction management for successful outcomes | Services for Renewable Energy | 🇺🇸 Houston | 2,633 | 1950 |
| 35 | [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 |
| 36 | [ThoughtFocus](https://www.tamtam.ai/c/thoughtfocus) (thoughtfocus.com)<br>Innovative technology solutions provider helping companies in various sectors achieve faster growth through executional excellence and risk mitigation | IT Services and IT Consulting | 🇺🇸 McKinney | 2,357 | 2004 |
| 37 | [SAM](https://www.tamtam.ai/c/sam-austin) (sam.biz)<br>Complex spatial data transformation into intelligent insights using a managed geospatial services framework for infrastructure development and lifecycle asset management optimization. | Business Consulting and Services | 🇺🇸 Austin | 2,353 | 1994 |
| 38 | [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 |
| 39 | [CLEAResult](https://www.tamtam.ai/c/clearesult) (clearesult.com)<br>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 | Utilities | 🇺🇸 Austin | 2,266 | 2003 |
| 40 | [Airswift](https://www.tamtam.ai/c/airswift) (airswift.com)<br>Supporting STEM professionals in technology and engineering with job placement services, boasting unrivaled talent pool and global presence in 60 offices | Staffing and Recruiting | 🇺🇸 Houston | 2,223 |  |
| 41 | [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 |
| 42 | [Personiv](https://www.tamtam.ai/c/personiv) (personiv.com)<br>Optimize finance & accounting teams with cost-effective offshore solutions, freeing up resources for strategic work while ensuring top-quality service and compliance | Outsourcing and Offshoring Consulting | 🇺🇸 Austin | 2,188 | 1985 |
| 43 | [Weaver](https://www.tamtam.ai/c/weaver) (weaver.com)<br>A Houston-based firm providing top accounting services, including assurance, tax, risk advisory, IT advisory, energy compliance, consulting, and specialty tax services | Accounting | 🇺🇸 Houston | 2,105 | 1950 |
| 44 | [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 |  |
| 45 | [Pape-Dawson](https://www.tamtam.ai/c/pape-dawson) (pape-dawson.com)<br>A well-established company providing civil engineering, surveying, GIS, and environmental services with a focus on employee growth and community impact | Civil Engineering | 🇺🇸 San Antonio | 2,040 | 1965 |
| 46 | [TTEC Digital](https://www.tamtam.ai/c/ttec-digital) (ttecdigital.com)<br>A global leader in customer experience orchestration, leveraging technology and empathy with expertise in CX strategy, data analytics, and AI | IT Services and IT Consulting | 🇺🇸 Austin | 1,983 |  |
| 47 | [ABS Group](https://www.tamtam.ai/c/abs-group) (abs-group.com)<br>Provider of data-driven risk and reliability solutions for critical assets in marine, offshore, oil, gas, chemical, government, and industrial sectors worldwide | Business Consulting and Services | 🇺🇸 Spring | 1,966 | 1971 |
| 48 | [Credera](https://www.tamtam.ai/c/credera) (credera.com)<br>Global consultancy bridging marketing ambition and technical execution through data and technology services to accelerate growth and build lasting transformations for brands. | Business Consulting and Services | 🇺🇸 Addison | 1,942 |  |
| 49 | [OLA](https://www.tamtam.ai/c/ola-austin) (olasustainability.com)<br>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 | Architecture and Planning | 🇺🇸 Austin | 1,933 | 2011 |
| 50 | [Argano](https://www.tamtam.ai/c/argano) (argano.com)<br>Global digital consultancy specializing in connecting design and delivery for business transformation, enhancing commercial agility, profitability, customer experience, and growth | IT Services and IT Consulting | 🇺🇸 Plano | 1,896 |  |
| 51 | [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 |
| 52 | [BG Staffing](https://www.tamtam.ai/c/bg-staffing) (bgsf.com)<br>A diversified consulting and staffing company offering workforce solutions in property management, consulting, IT, finance & accounting, with multiple awards for excellence | Staffing and Recruiting | 🇺🇸 Addison | 1,822 |  |
| 53 | [Improving](https://www.tamtam.ai/c/improving) (improving.com)<br>Improving is committed to fostering a positive work culture through teamwork, excellence, and fun, while supporting the Conscious Capitalism movement | IT Services and IT Consulting | 🇺🇸 Plano | 1,787 | 2006 |
| 54 | [Vinson & Elkins](https://www.tamtam.ai/c/vinson-and-elkins) (connect.velaw.com)<br>providing expert legal counsel and innovative solutions to leading companies across various industries, focusing on complex matters and client trust | Law Practice | 🇺🇸 Houston | 1,786 | 1917 |
| 55 | [IT Convergence](https://www.tamtam.ai/c/it-convergence) (itconvergence.com)<br>Global Oracle Platinum Partner offering cloud consulting, managed services, integration, analytics, automation, training, and change management for enterprises. | IT Services and IT Consulting | 🇺🇸 Irving | 1,773 | 1998 |
| 56 | [Consero Global](https://www.tamtam.ai/c/consero-global) (conseroglobal.com)<br>A pioneer in Finance as a Service, disrupting finance department setup for investment managers and PE/VC backed companies with cutting-edge technology | Financial Services | 🇺🇸 Austin | 1,737 | 2006 |
| 57 | [PSC](https://www.tamtam.ai/c/psc) (jd3consultingllc.com)<br>Consulting business offering expertise in engineering, sales, and business development, particularly in mergers and acquisitions (M&A) | Oil and Gas | 🇺🇸 Houston | 1,713 | 2021 |
| 58 | [CAMS](https://www.tamtam.ai/c/cams) (camstex.com)<br>Provides disciplined asset management and operations services, maximizing clients' value through operational performance, commercial optimization, and financial controls A reputation for creativity and flexibility | Utilities | 🇺🇸 Houston | 1,712 | 2007 |
| 59 | [Pinnacle](https://www.tamtam.ai/c/pinnacle-pasadena) (pinnaclereliability.com)<br>A company based in Pasadena, focused on helping industrial facilities in oil and gas, chemical, mining, and water industries optimize data for improved performance | Engineering Services | 🇺🇸 Pasadena | 1,701 | 2006 |
| 60 | [Audubon Companies](https://www.tamtam.ai/c/audubon-companies) (auduboncompanies.com)<br>A leading provider of EPC, consulting, fabrication, and technical services for energy, chemicals, power, infrastructure, and industrial markets with a focus on sustainability | Engineering Services | 🇺🇸 Houston | 1,680 | 1997 |
| 61 | [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 |
| 62 | [Westwood Professional Services](https://www.tamtam.ai/c/westwood-professional-services) (westwoodps.com)<br>A dedicated team with over 50 years of experience creating a better world through energy grid transformation, resilient infrastructure design, and community development | Engineering Services | 🇺🇸 Plano | 1,660 | 1972 |
| 63 | [Baker Botts](https://www.tamtam.ai/c/baker-botts) (bakerbotts.com)<br>Global law firm specializing in energy, technology, and life sciences sectors, providing creative legal solutions and demonstrating commitment to excellence since 1840 | Law Practice | 🇺🇸 Houston | 1,633 | 1840 |
| 64 | [Radix - Global](https://www.tamtam.ai/c/radix-global) (radixeng.com)<br>A global technology solutions company offering innovative industrial solutions to drive transformation, operational excellence, and sustainable value worldwide | IT Services and IT Consulting | 🇺🇸 Houston | 1,619 |  |
| 65 | [Searce Inc](https://www.tamtam.ai/c/searce-inc) (searce.com)<br>A company focused on refining, analyzing, and improving to deliver intelligent, impactful, and futuristic business outcomes through passionate employees | Business Consulting and Services | 🇺🇸 Houston | 1,587 | 2004 |
| 66 | [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 |
| 67 | [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 |
| 68 | [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 |  |
| 69 | [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 |
| 70 | [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 |
| 71 | [AIS Info](https://www.tamtam.ai/c/ais-info) (aisinfo.com)<br>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 | Financial Services | 🇺🇸 Houston | 1,509 | 2000 |
| 72 | [Everest Group](https://www.tamtam.ai/c/everest-group) (everestgrp.com)<br>Provides research-based insights and guidance to help business leaders improve operational performance, navigate market challenges, and drive transformation. | Information Services | 🇺🇸 Dallas-Fort Worth Metroplex | 1,486 |  |
| 73 | [Safran Electronics & Defense, Avionics USA, LLC.](https://www.tamtam.ai/c/safran-electronics-and-defense-avionics-usa-llc) (safran-group.com)<br>Design, support, maintenance, and sales of avionics products including cockpit displays, autopilot systems, flight controls, and monitoring software for aircraft and helicopters. | Aviation and Aerospace Component Manufacturing | 🇺🇸 Grand Prairie | 1,481 |  |
| 74 | [The Stronghold Companies](https://www.tamtam.ai/c/the-stronghold-companies) (thestrongholdcompanies.com)<br>Provider of safe, efficient, quality solutions for refinery, petrochemical, and midstream industries, utilizing skilled craftsmen and state-of-the-art equipment for cost synergies | Oil and Gas | 🇺🇸 La Porte | 1,466 |  |
| 75 | [Sirius Computer Solutions](https://www.tamtam.ai/c/sirius-computer-solutions) (cdw.com)<br>A nationally recognized IT solution provider with certified teams offering a wide range of technology solutions to meet business needs | IT Services and IT Consulting | 🇺🇸 San Antonio | 1,459 | 1980 |
| 76 | [BAL](https://www.tamtam.ai/c/bal) (bal.com)<br>Leading corporate immigration law firm providing specialized legal services and IT tools to manage US and global immigration matters for diverse industry clients worldwide | Law Practice | 🇺🇸 Richardson | 1,458 | 1980 |
| 77 | [Freese and Nichols](https://www.tamtam.ai/c/freese-and-nichols) (freese.com)<br>Professional planning, consulting, and engineering firm specializing in sustainable water and infrastructure project design and management across the United States. | Civil Engineering | 🇺🇸 Fort Worth | 1,437 | 1894 |
| 78 | [FPT Americas](https://www.tamtam.ai/c/fpt-americas) (fptsoftware.com)<br>A leading provider of outsourcing services focused on delivering innovative IT solutions to global clients across various industries | IT Services and IT Consulting | 🇺🇸 Richardson | 1,381 | 1999 |
| 79 | [PBK](https://www.tamtam.ai/c/pbk) (pbk.com)<br>A leading architecture, engineering, and consulting practice specializing in design solutions for education, healthcare, corporate, government, and sports/events sectors since 1981 | Architecture and Planning | 🇺🇸 Houston | 1,366 |  |
| 80 | [Information Evolution, Inc.](https://www.tamtam.ai/c/information-evolution-inc) (informationevolution.com)<br>A boutique outsourcing firm based in South India and Austin, Texas, specializing in maintaining accurate and up-to-date databases for clients | Outsourcing and Offshoring Consulting | 🇺🇸 Austin | 1,353 | 2007 |
| 81 | [Frank's International N.V.](https://www.tamtam.ai/c/frank-s-international-n-v) (expro.com)<br>Enables customers to make better-informed decisions through data and digital transformation, addressing energy challenges with innovative technology across well construction and production. | Oil and Gas | 🇺🇸 Houston | 1,340 |  |
| 82 | [Walter P Moore](https://www.tamtam.ai/c/walter-p-moore) (walterpmoore.com)<br>A team of engineers and innovators designing high-performance structures and infrastructure globally, providing cost-efficient solutions that shape communities worldwide | Engineering Services | 🇺🇸 Houston | 1,340 | 1931 |
| 83 | [Shermco Industries](https://www.tamtam.ai/c/shermco-industries) (shermco.com)<br>Provider of safe, reliable testing, repair, training, and maintenance for rotating apparatus, electrical power distribution systems and related equipment across various industrial sectors. | Appliances, Electrical, and Electronics Manufacturing | 🇺🇸 Irving | 1,336 | 1974 |
| 84 | [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 |  |
| 85 | [alliantgroup](https://www.tamtam.ai/c/alliantgroup) (alliantglobal.com)<br>A premier consulting and management engineering firm, using science-based methods and a team of 2,000 professionals to deliver solutions for businesses worldwide | Business Consulting and Services | 🇺🇸 Houston | 1,325 | 2002 |
| 86 | [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 |
| 87 | [Servicios Contables](https://www.tamtam.ai/c/servicios-contables) (sccalop.com)<br>Servicios Contables provides executive office services, specializing in accounting, located in Houston, Texas | Accounting | 🇺🇸 Houston | 1,314 |  |
| 88 | [BGE, Inc.](https://www.tamtam.ai/c/bge-inc) (bgeinc.com)<br>A consulting firm offering engineering, environmental, surveying, construction management, and planning services for public and private clients nationwide Visit bgeinccom for more information | Civil Engineering | 🇺🇸 Houston | 1,313 | 1975 |
| 89 | [Halff](https://www.tamtam.ai/c/halff) (halff.com)<br>Full-service engineering and architecture firm offering consulting, fostering collaboration, investing in employees, and delivering high-quality, human-centered solutions. | Civil Engineering | 🇺🇸 Richardson | 1,305 | 1950 |
| 90 | [Rimkus](https://www.tamtam.ai/c/rimkus) (rimkus.com)<br>Global leader in engineering & technical consulting, offering services to various industries worldwide with a focus on resolving accidents, claims, legal disputes, and complex risks | Business Consulting and Services | 🇺🇸 Houston | 1,265 | 1983 |
| 91 | [Self](https://www.tamtam.ai/c/self-houston) (culbertsonresources.com)<br>Specializing in recruiting for IT, finance, energy, clerical/admin, and industrial sectors Placements range from executives to staff, offering various employment arrangements | Staffing and Recruiting | 🇺🇸 Houston | 1,242 | 2002 |
| 92 | [Programmers.io](https://www.tamtam.ai/c/programmers-io) (programmers.io)<br>Global technology company specializing in IBM i and IBM Z modernization, offering AI enablement, cloud migration, and application development with a happiness guarantee. | IT Services and IT Consulting | 🇺🇸 Dallas | 1,237 | 2012 |
| 93 | [STRIKE](https://www.tamtam.ai/c/strike) (strikeusa.com)<br>The company provides end-to-end solutions for pipeline, facilities, and energy infrastructure projects, including major capital projects, infrastructure services, and renewable energy initiatives | Oil and Gas | 🇺🇸 Spring | 1,234 |  |
| 94 | [Career Strategies](https://www.tamtam.ai/c/career-strategies) (csi4jobs.com)<br>Specializing in various industries, we provide executive search, permanent placement, and temporary staffing services to help clients and candidates achieve their goals | Staffing and Recruiting | 🇺🇸 Round Rock | 1,229 | 1989 |
| 95 | [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 |  |
| 96 | [Gulf Companies](https://www.tamtam.ai/c/gulf-companies) (gulfcompanies.com)<br>A leading provider of engineering and technical services in the global energy industry, focusing on safe, sustainable solutions and client success | Oil and Gas | 🇺🇸 Houston | 1,218 | 1953 |
| 97 | [Camin Cargo Control Inc.](https://www.tamtam.ai/c/camin-cargo-control-inc) (camincargo.com)<br>This company provides inspection, laboratory testing, and additive treatment solutions to the Petroleum Industry with a focus on quality and customer satisfaction | Oil and Gas | 🇺🇸 Houston | 1,215 | 1982 |
| 98 | [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 |
| 99 | [Morae](https://www.tamtam.ai/c/morae) (morae.com)<br>A global provider of digital and business solutions for the legal industry, offering consulting, technology, and operations expertise to help clients achieve their objectives efficiently | Legal Services | 🇺🇸 Houston | 1,161 | 2015 |
| 100 | [The Brandt Companies](https://www.tamtam.ai/c/the-brandt-companies) (southlandind.com)<br>A leader in designing, building, upgrading, and maintaining energy efficient systems for commercial, institutional, and industrial customers nationwide | Construction | 🇺🇸 Carrollton | 1,158 | 1952 |

## 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 Texas

- [The largest companies in Texas](https://www.tamtam.ai/l/largest-companies-texas) (9,277)
- [Multinational companies in Texas](https://www.tamtam.ai/l/multinational-companies-texas) (1,418)
- [Oil and Gas companies in Texas](https://www.tamtam.ai/l/oil-and-gas-companies-texas) (969)
- [Energy companies in Texas](https://www.tamtam.ai/l/energy-companies-texas) (857)
- [IT Services and IT Consulting companies in Texas](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-texas) (834)
- [IT services companies in Texas](https://www.tamtam.ai/l/it-services-companies-texas) (729)
- [Retail chains in Texas](https://www.tamtam.ai/l/retail-chains-texas) (633)
- [Manufacturers in Texas](https://www.tamtam.ai/l/manufacturers-texas) (621)
- [Critical infrastructure operators in Texas](https://www.tamtam.ai/l/critical-infrastructure-operators-texas) (579)
- [Real Estate companies in Texas](https://www.tamtam.ai/l/real-estate-companies-texas) (563)
- [Education providers in Texas](https://www.tamtam.ai/l/education-companies-texas) (533)
- [SaaS companies in Texas](https://www.tamtam.ai/l/saas-companies-texas) (498)
- [Consulting firms in Texas](https://www.tamtam.ai/l/consulting-firms-texas) (453)
- [Companies with in-house R&D in Texas](https://www.tamtam.ai/l/r-and-d-companies-texas) (442)
- [Hardware manufacturers in Texas](https://www.tamtam.ai/l/hardware-companies-texas) (426)
- [Hospitals and Health Care companies in Texas](https://www.tamtam.ai/l/hospitals-and-health-care-companies-texas) (423)
- [Software Development companies in Texas](https://www.tamtam.ai/l/software-development-companies-texas) (414)
- [Financial services firms in Texas](https://www.tamtam.ai/l/financial-services-firms-texas) (410)
- [Healthcare providers in Texas](https://www.tamtam.ai/l/healthcare-providers-texas) (408)
- [Transportation, Logistics, Supply Chain and Storage companies in Texas](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-texas) (375)
- [Companies with a mobile app in Texas](https://www.tamtam.ai/l/companies-with-mobile-app-texas) (366)
- [Public sector organisations in Texas](https://www.tamtam.ai/l/public-sector-organisations-texas) (360)
- [AI companies in Texas](https://www.tamtam.ai/l/ai-companies-texas) (351)
- [Logistics companies in Texas](https://www.tamtam.ai/l/logistics-companies-texas) (334)

## The same list elsewhere in United States

- [Professional services firms in the United States](https://www.tamtam.ai/l/professional-services-firms-united-states) (7,078)
- [Professional services firms in New York State](https://www.tamtam.ai/l/professional-services-firms-new-york-state) (955)
- [Professional services firms in California](https://www.tamtam.ai/l/professional-services-firms-california) (880)
- [Professional services firms in Florida](https://www.tamtam.ai/l/professional-services-firms-florida) (375)
- [Professional services firms in Virginia](https://www.tamtam.ai/l/professional-services-firms-virginia) (344)
- [Professional services firms in Illinois](https://www.tamtam.ai/l/professional-services-firms-illinois) (339)
- [Professional services firms in Massachusetts](https://www.tamtam.ai/l/professional-services-firms-massachusetts) (249)
- [Professional services firms in New Jersey](https://www.tamtam.ai/l/professional-services-firms-new-jersey) (249)
- [Professional services firms in Georgia](https://www.tamtam.ai/l/professional-services-firms-georgia) (246)
- [Professional services firms in Pennsylvania](https://www.tamtam.ai/l/professional-services-firms-pennsylvania) (245)
- [Professional services firms in Ohio](https://www.tamtam.ai/l/professional-services-firms-ohio) (195)
- [Professional services firms in Maryland](https://www.tamtam.ai/l/professional-services-firms-maryland) (176)
- [Professional services firms in Michigan](https://www.tamtam.ai/l/professional-services-firms-michigan) (172)
- [Professional services firms in Washington State](https://www.tamtam.ai/l/professional-services-firms-washington-state) (163)
- [Professional services firms in North Carolina](https://www.tamtam.ai/l/professional-services-firms-north-carolina) (142)
- [Professional services firms in Alabama](https://www.tamtam.ai/l/professional-services-firms-alabama) (135)
- [Professional services firms in Minnesota](https://www.tamtam.ai/l/professional-services-firms-minnesota) (125)
- [Professional services firms in New York](https://www.tamtam.ai/l/professional-services-firms-new-york) (735)
- [Professional services firms in Chicago](https://www.tamtam.ai/l/professional-services-firms-chicago) (196)
- [Professional services firms in Houston](https://www.tamtam.ai/l/professional-services-firms-houston) (156)
- [Professional services firms in Atlanta](https://www.tamtam.ai/l/professional-services-firms-atlanta) (143)
- [Professional services firms in San Francisco](https://www.tamtam.ai/l/professional-services-firms-san-francisco) (130)
- [Professional services firms in Washington](https://www.tamtam.ai/l/professional-services-firms-washington) (109)
- [Professional services firms in Los Angeles](https://www.tamtam.ai/l/professional-services-firms-los-angeles) (108)

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