# Top 39 professional services firms in Louisiana

Tamtam tracks 39 professional services firms headquartered in Louisiana. This list ranks all of them by number of employees on LinkedIn, led by Wipro Technologies, APTIM and Providence - An Engineering and Environmental Consulting Firm. Their median headcount is 341. Half of them were founded in 1995 or later. The most common headquarters are Baton Rouge (11), New Orleans (8) and Lafayette (6).

This selection of professional services firms in Louisiana shows a mix of large and mid-sized companies. It includes Wipro Technologies, a management consulting company in New Orleans, and APTIM, a Baton Rouge firm specializing in environmental and infrastructure solutions. Also present are Phelps Dunbar LLP and Jones Walker LLP, both law firms based in New Orleans, and EDG, a global consulting engineering firm in Metairie serving oil & gas markets. Hospital Physician Partners in Lafayette provides clinical services in Emergency and Hospital Medicine.

The companies on this list are predominantly involved in business consulting, environmental services, and legal practice. A notable concentration of headquarters is observed in New Orleans and Baton Rouge, with several firms also located in Metairie and Lafayette. The founding dates range from the mid-19th century, with Phelps Dunbar LLP established in 1853, to the early 2000s, reflecting a blend of long-established and more recently founded enterprises.

🇺🇸 Louisiana · 39 companies · Updated Nov 14, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Wipro Technologies](https://www.tamtam.ai/c/wipro-technologies-new-orleans) (wipro.com)<br>Management consulting company located in New Orleans, providing services to help businesses improve operations and achieve their goals | Business Consulting and Services | 🇺🇸 New Orleans | 16,942 |  |
| 2 | [APTIM](https://www.tamtam.ai/c/aptim) (aptim.com)<br>A professional solutions firm specializing in environmental, sustainability, resilience, and infrastructure solutions for government agencies, commercial clients, and energy customers | Environmental Services | 🇺🇸 Baton Rouge | 3,077 |  |
| 3 | [Providence - An Engineering and Environmental Consulting Firm](https://www.tamtam.ai/c/providence-an-engineering-and-environmental-consulting-firm) (providenceeng.com)<br>Employee-owned engineering and environmental consulting firm with experienced professionals offering services in engineering, environmental, and technology disciplines for governmental and industrial clients | Environmental Services | 🇺🇸 Baton Rouge | 2,017 | 2000 |
| 4 | [Hospital Physician Partners](https://www.tamtam.ai/c/hospital-physician-partners) (scphealth.com)<br>A leading clinical services partner in Emergency and Hospital Medicine, providing career opportunities for clinicians and strategic program management services for hospital leaders | Hospitals and Health Care | 🇺🇸 Lafayette | 1,393 | 1994 |
| 5 | [EDG](https://www.tamtam.ai/c/edg) (edg.net)<br>A global consulting engineering firm serving oil & gas and industrial markets with innovative solutions in various disciplines Offering growth opportunities and value to customers worldwide | Oil and Gas | 🇺🇸 Metairie | 1,053 | 1982 |
| 6 | [Phelps Dunbar LLP](https://www.tamtam.ai/c/phelps-dunbar-llp) (phelps.com)<br>A regional law firm with 300+ attorneys serving major commercial centers along the Gulf Coast, specializing in admiralty, business, employment, health care, insurance, and litigation services | Law Practice | 🇺🇸 New Orleans | 883 | 1853 |
| 7 | [Jones Walker LLP](https://www.tamtam.ai/c/jones-walker-llp) (joneswalker.com)<br>A law firm offering a wide range of legal services to national and international corporate clients through multiple offices across the US | Law Practice | 🇺🇸 New Orleans | 829 | 1937 |
| 8 | [Gifted Healthcare](https://www.tamtam.ai/c/gifted-healthcare) (giftedhealthcare.com)<br>Award-winning company offering career opportunities to clinicians and school-based professionals nationwide, providing access to diverse assignments in healthcare facilities and schools | Staffing and Recruiting | 🇺🇸 Metairie | 615 | 2006 |
| 9 | [LEMOINE](https://www.tamtam.ai/c/lemoine) (1lemoine.com)<br>A versatile provider of enduring solutions in construction, disaster recovery, consulting, and logistics services across various sectors for government, healthcare, and commercial clients | Professional Services | 🇺🇸 Lafayette | 576 | 1975 |
| 10 | [Hunt Guillot & Associates (HGA)](https://www.tamtam.ai/c/hunt-guillot-and-associates-hga) (hga-llc.com)<br>A full-service program management and engineering firm with expertise in multiple industries providing services in various states and countries | Business Consulting and Services | 🇺🇸 Ruston | 560 | 1997 |
| 11 | [Ampirical](https://www.tamtam.ai/c/ampirical) (ampirical.com)<br>Specializing in engineering power solutions, Ampirical provides quality EPC services for high voltage powerlines and substations, ensuring successful project outcomes | Utilities | 🇺🇸 Covington | 505 | 2006 |
| 12 | [Keystone Engineering Inc](https://www.tamtam.ai/c/keystone-engineering-inc) (keystoneengr.com)<br>A multi-disciplined engineering firm offering innovative solutions in various industries with a focus on quality, safety, and cost-effectiveness | Engineering Services | 🇺🇸 Mandeville | 496 | 1988 |
| 13 | [ReCon Management Services, Inc.](https://www.tamtam.ai/c/recon-management-services-inc) (recon-group.com)<br>Established in 1995, ReCon offers high quality engineering design and project management services to various industries with a focus on energy, innovation, and quality | Mechanical Or Industrial Engineering | 🇺🇸 Sulphur | 464 | 1995 |
| 14 | [Kean Miller](https://www.tamtam.ai/c/kean-miller) (keanmiller.com)<br>A leading law firm in the Gulf South region, specializing in innovative and high-quality legal services for Fortune 500, national, and local clients | Law Practice | 🇺🇸 Baton Rouge | 452 | 1983 |
| 15 | [CSRS, a Westwood company](https://www.tamtam.ai/c/csrs-a-westwood-company) (csrsinc.com)<br>Providing advisory and program management services for sustainable projects, disaster recovery, and navigating political bureaucracy to achieve long-term goals | Business Consulting and Services | 🇺🇸 Baton Rouge | 411 | 1978 |
| 16 | [GIS Engineering, LLC](https://www.tamtam.ai/c/gis-engineering-llc) (gisy.com)<br>An integrated engineering team providing coastal design, construction, and asset management services for government agencies, with a focus on large-scale projects | Civil Engineering | 🇺🇸 Baton Rouge | 389 | 1948 |
| 17 | [Ford, Bacon & Davis, LLC](https://www.tamtam.ai/c/ford-bacon-and-davis-llc) (fbd.com)<br>A privately owned EPC company with 8 offices in US, specializing in engineering projects in Chemical/Petrochemical, Pulp and Paper, Refining, and Renewable Energy markets | Industrial Machinery Manufacturing | 🇺🇸 Baton Rouge | 372 |  |
| 18 | [NVI, LLC (Nondestructive Visual Inspection)](https://www.tamtam.ai/c/nvi-llc-nondestructive-visual-inspection) (nvindt.com)<br>A worldwide industrial solutions provider, specializing in infrastructure inspection and maintenance with a focus on reliability, customer service, and exceptional NDT techniques | Oil and Gas | 🇺🇸 Gray | 368 | 2003 |
| 19 | [Savard Labor & Marine Personnel](https://www.tamtam.ai/c/savard-labor-and-marine-personnel) (savardgroup.net)<br>Staffing agency providing skilled and unskilled blue collar labor for various worksites, specializing in reducing costs and increasing efficiency for clients | Staffing and Recruiting | 🇺🇸 Baton Rouge | 364 | 1998 |
| 20 | [Express Employment of the Northshore and Tangipahoa](https://www.tamtam.ai/c/express-employment-of-the-northshore-and-tangipahoa) (expresspros.com)<br>A staffing agency helping job seekers find full-time, part-time, or flexible jobs in various industries without charging fees for services | Staffing and Recruiting | 🇺🇸 Covington | 341 | 1983 |
| 21 | [Galloway Johnson Tompkins Burr & Smith](https://www.tamtam.ai/c/galloway-johnson-tompkins-burr-and-smith) (gallowaylawfirm.com)<br>Litigation firm serving local & international clients in various industries with expertise in insurance, maritime, construction, transportation, and corporate matters | Law Practice | 🇺🇸 New Orleans | 337 | 1987 |
| 22 | [DAQA](https://www.tamtam.ai/c/daqa) (daqa.net)<br>Specializing in strategic guidance, DAQA assists game studios in optimizing production operations, implementing recommendations, and providing bespoke solutions for game projects | Computer Games | 🇺🇸 New Orleans | 333 | 2017 |
| 23 | [Lofton.Jobs](https://www.tamtam.ai/c/lofton-jobs) (loftonstaffing.com)<br>This company helps businesses by providing qualified personnel for various positions while handling all employer obligations and offering comprehensive employee benefits | Staffing and Recruiting | 🇺🇸 Baton Rouge | 327 | 1979 |
| 24 | [T. Baker Smith](https://www.tamtam.ai/c/t-baker-smith) (tbsmith.com)<br>A professional consulting firm providing tailored solutions in engineering, environmental services, surveying, marine positioning, planning, and GIS/mapping with a focus on exceeding client expectations | Civil Engineering | 🇺🇸 Houma | 321 | 1913 |
| 25 | [OrthoSynetics](https://www.tamtam.ai/c/orthosynetics) (orthosynetics.com)<br>A national healthcare services provider supporting orthodontic and pediatric dental practices in the US, specializing in revenue growth and profitability through various services | Hospitals and Health Care | 🇺🇸 Metairie | 193 | 1990 |
| 26 | [Boss Energy Solutions](https://www.tamtam.ai/c/boss-energy-solutions) (go-bes.com)<br>A labor and consulting company in the energy sector, providing offshore and inland production personnel and staffing solutions to energy companies | Oil and Gas | 🇺🇸 Lafayette | 129 | 2002 |
| 27 | [Polaris Engineering](https://www.tamtam.ai/c/polaris-engineering-lake-charles) (polarisepc.com)<br>A Louisiana-based engineering firm offering full-service design services, including process, mechanical, civil, structural, instrumentation, electrical, control, and automation | Oil and Gas | 🇺🇸 Lake Charles | 115 | 1996 |
| 28 | [Huval & Associates, Inc.](https://www.tamtam.ai/c/huval-and-associates-inc) (huvalassoc.com)<br>An engineering consulting firm offering civil and structural engineering solutions nationwide and internationally, focused on exceptional service, innovation, and value for clients | Engineering Services | 🇺🇸 Lafayette | 35 | 1989 |
| 29 | [Rabalais Law](https://www.tamtam.ai/c/rabalais-law) (estateplanninginlouisiana.com)<br>Louisiana-based law firm specializing in estate planning and settlement services for clients in multiple states, with a focus on professionalism and efficiency | Law Practice | 🇺🇸 Baton Rouge | 17 | 1995 |
| 30 | [Rep Cap](https://www.tamtam.ai/c/rep-cap) (repcap.com)<br>Specializing in B2B content marketing strategy, management, and production for management consultants, HR tech, insurance/risk advisors, and financial services industries | Marketing Services | 🇺🇸 Baton Rouge | 17 | 2011 |
| 31 | [Mansfield Melancon - Injury Lawyers](https://www.tamtam.ai/c/mansfield-melancon-injury-lawyers) (mmcdlaw.com)<br>A group of lawyers in Louisiana providing personalized legal representation in personal injury, criminal defense, family law, and business litigation | Law Practice | 🇺🇸 Metairie | 15 | 2018 |
| 32 | [The Derbes Law Firm, LLC](https://www.tamtam.ai/c/the-derbes-law-firm-llc) (derbeslaw.com)<br>A legal firm in Metairie, serving clients in business, bankruptcy, estate planning, successions, and financial matters through litigation and transactional services | Law Practice | 🇺🇸 Metairie | 13 | 1995 |
| 33 | [KM Consulting LLC](https://www.tamtam.ai/c/km-consulting-llc) (kmconsultingllc.net)<br>Provider of IT strategic planning, governance, project management, operational optimization, and healthcare revenue cycle optimization services to assist organizations in achieving their goals efficiently | IT Services and IT Consulting | 🇺🇸 New Orleans | 12 | 2009 |
| 34 | [Veazey Felder & Renegar, LLC](https://www.tamtam.ai/c/veazey-felder-and-renegar-llc) (vfrlawfirm.com)<br>A dynamic law firm offering exceptional legal services to individuals, small businesses, and corporate clients in various areas of law | Law Practice | 🇺🇸 Lafayette | 12 | 2003 |
| 35 | [Burgos & Associates](https://www.tamtam.ai/c/burgos-and-associates) (burgoslawfirm.com)<br>A Louisiana law firm with ethical attorneys handling personal injury, real estate, business, immigration, family law, and criminal defense cases with integrity | Law Practice | 🇺🇸 New Orleans | 10 | 1995 |
| 36 | [OutSolve (formerly Pinnacle HR Consulting Services)](https://www.tamtam.ai/c/outsolve-formerly-pinnacle-hr-consulting-services) (outsolve.com)<br>A complete compliance solutions provider acquired an HR consulting company, expanding its offerings for Affirmative Action planning and compliance services | Business Consulting and Services | 🇺🇸 New Orleans | 7 | 1998 |
| 37 | [NFP Corporate Services (LA), Inc.](https://www.tamtam.ai/c/nfp-corporate-services-la-inc) (nfp.com)<br>A leading provider of comprehensive insurance solutions, empowering clients with expert teams, innovative technology, and strong insurer relationships for achieving their goals | Insurance | 🇺🇸 Baton Rouge | 5 | 1977 |
| 38 | [Bart Bernard Injury Lawyers](https://www.tamtam.ai/c/bart-bernard-injury-lawyers) (bartbernard.com)<br>A law firm with offices in Louisiana, fighting to secure compensation for people injured in accidents and families who have lost loved ones | Law Practice | 🇺🇸 Lafayette | 4 | 1997 |
| 39 | [Complete Services Group LLC](https://www.tamtam.ai/c/complete-services-group-llc) (complete-llc.com)<br>This company specializes in providing comprehensive services to the oil and gas industry, focusing on successful project completion while prioritizing environmental sustainability | Oil and Gas | 🇺🇸 New Iberia | 3 | 2017 |

## 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 14, 2026.

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## The same list elsewhere in United States

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- [Professional services firms in California](https://www.tamtam.ai/l/professional-services-firms-california) (880)
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- [Professional services firms in Illinois](https://www.tamtam.ai/l/professional-services-firms-illinois) (339)
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- [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)
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## The same list elsewhere

- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,736)

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