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Professional services firms headquartered in Alabama

Tamtam tracks 135 professional services firms headquartered in Alabama. This list ranks the 50 largest by number of employees on LinkedIn, led by C.S, Mercer Espaรฑa and Sedgwick. Their median headcount is 1,816. Half of them were founded in 1994 or later. The most common headquarters are New York (6), Huntsville (4) and Mobile (3).

๐Ÿ‡บ๐Ÿ‡ธ Alabama50 companiesUpdated Nov 11, 2026

The professional services firms in Alabama listed here are mostly large companies operating across various sectors. Companies like C.S. provide IT services, Mercer Espaรฑa offers professional training and coaching, and Sedgwick specializes in insurance. Other notable firms include Kelly in staffing and recruiting, Propio Language Services for translation, and CLA (CliftonLarsonAllen) in accounting.

These firms represent a diverse mix of professional services. A common pattern observed is the presence of several civil engineering companies such as HNTB, Terracon, and JMT, indicating a strong focus on infrastructure and development within the professional services landscape in Alabama.

#CompanyIndustryHeadquarters EmployeesFounded
1
C.S

The company does amazing things. These amazing things happen daily. They are involved in many amazing projects and activities.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Global 44,000 1959
2
Mercer Espaรฑamercer.com

Mercer is a global consultancy business focused on providing trusted advice and solutions to help organizations build brighter, healthier, and more sustainable futures

Professional Training and Coaching ๐Ÿ‡บ๐Ÿ‡ธ New York 25,000 1945
3
Sedgwicksedgwick.com

A global provider of risk, benefits, and business solutions, offering tailored resources to help organizations with health, claims, brand protection, and business continuity

Insurance ๐Ÿ‡บ๐Ÿ‡ธ 23,170 1969
4
Kellykellyservices.com

A pioneering staffing company connecting over 450,000 individuals with work annually, leveraging expertise in various industries since 1946

Staffing and Recruiting ๐Ÿ‡บ๐Ÿ‡ธ Troy 20,231 1946
5
Propio Language Servicespropio.com

Providing technology-driven interpreting, translation, and localization services. Ensuring Limited English Proficient speakers access essential services through certified, ethical interpreters.

Translation and Localization ๐Ÿ‡บ๐Ÿ‡ธ Overland Park 11,345 1998
6
CLA (CliftonLarsonAllen)claconnect.com

A company providing industry-focused wealth advisory, outsourcing, audit, tax, and consulting services with a global presence, emphasizing personalized client relationships

Accounting ๐Ÿ‡บ๐Ÿ‡ธ 9,503 2012
7
HNTBhntb.com

An employee-owned infrastructure solutions firm specializing in innovative transportation systems and infrastructure solutions to connect people and expand opportunities

Civil Engineering ๐Ÿ‡บ๐Ÿ‡ธ 7,839 1914
8
Innova Solutionsinnovasolutions.com

Innova Solutions provides transformative digital solutions, specializing in AI, data analytics, cloud computing, and cybersecurity for various industries globally.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Atlanta 7,703 n/a
9
Tiger Analyticstigeranalytics.com

A global leader in AI and Analytics, offering fullstack services to Fortune 1000 companies across various industries to achieve real outcomes at scale

Business Consulting and Services ๐Ÿ‡บ๐Ÿ‡ธ Santa Clara 7,353 2011
10
Terraconterracon.com

This employee-owned consulting engineering firm offers environmental, facilities, geotechnical, and materials services for diverse private and public clients across numerous locations, both nationally and internationally.

Civil Engineering ๐Ÿ‡บ๐Ÿ‡ธ Olathe 7,073 1965
11
Securitas Technologysecuritastechnology.com

Provides integrated security solutions globally. Focuses on protecting, connecting, and optimizing businesses. Aims to make the world a safer place through its services.

Security and Investigations ๐Ÿ‡บ๐Ÿ‡ธ Uniontown 4,591 n/a
12
EisnerAmpereisneramper.com

Provides attest services through an independent CPA firm and business advisory, non-attest services via an alternative practice structure for various business sectors.

Accounting ๐Ÿ‡บ๐Ÿ‡ธ New York 4,157 1963
13
Pilot Catastrophe Servicespilotcat.com

The company is dedicated to providing quality service in the claims process, driving innovation in the industry, and giving back to communities

Insurance ๐Ÿ‡บ๐Ÿ‡ธ Mobile 3,992 1983
14
JMTjmt.com

This employee-owned, multi-disciplined firm offers planning, design, and construction consulting services for infrastructure projects across the United States for various clients.

Civil Engineering ๐Ÿ‡บ๐Ÿ‡ธ Serving Clients Across the US 2,710 n/a
15
Kantar Millward Brownkantar.com

Global consulting company providing evidence-based insights on consumer behavior through data, analytics, and technology to inspire growth for clients worldwide

Market Research ๐Ÿ‡บ๐Ÿ‡ธ London 2,530 1973
16
WilmerHalewilmerhale.com

A leading international law firm with over 1,000 lawyers in 13 offices worldwide, specializing in government, technology, and business law Promotes diversity and public service

Law Practice ๐Ÿ‡บ๐Ÿ‡ธ Washington 2,356 n/a
17
Polsinellipolsinelli.com

A top Am Law 100 firm with over 1,000 attorneys nationwide offering legal counsel in various sectors like health care, finance, and technology

Law Practice ๐Ÿ‡บ๐Ÿ‡ธ 2,292 n/a
18
FleishmanHillardfleishmanhillard.com

Global communications agency specializing in inclusive culture, diversity initiatives, award-winning public relations, and community service across multiple countries.

Public Relations and Communications Services ๐Ÿ‡บ๐Ÿ‡ธ St. Louis 2,252 1946
19
Carr, Riggs & Ingramcriadv.com

A nationally-ranked accounting and advisory firm providing traditional accounting services, business support, technology resources, assurance offerings, and helping clients achieve competitive advantage

Business Consulting and Services ๐Ÿ‡บ๐Ÿ‡ธ Enterprise 2,131 1997
20
Onin Staffingoninstaffing.com

A national staffing agency specializing in light industrial and clerical roles, providing personalized guidance, unbeatable benefits, and innovative solutions for workforce challenges

Staffing and Recruiting ๐Ÿ‡บ๐Ÿ‡ธ Birmingham 2,001 1994
21
Automated Systems Design, Inc.asd-usa.com

Provides nationwide design, engineering, and project management for Division 27 and 28 construction, including access control, surveillance, A/V, cabling, GPON, sound, and notification systems.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Alpharetta 1,977 1987
22
InfoVision Inc.infovision.com

Leading global IT services company offering enterprise digital transformation and modernization solutions across various business verticals, helping clients with innovation and workflow transformation.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Richardson 1,970 1995
23
Hargrove Engineers & Constructorshargrove-epc.com

A full-service firm providing engineering, procurement, construction management, project management, controls & automation, and technical services to energy, manufacturing, and industrial clients nationwide

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Mobile 1,954 1995
24
Gen II Fund Servicesgen2fund.com

A leading provider offering fund administration services to private capital asset managers and investors with over $1 trillion under administration

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ New York 1,846 2009
25
Exadelexadel.com

Global software consulting and development company helping enterprises transform businesses with end-to-end software solutions, design, engineering, and managed services.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Walnut Creek 1,816 1998

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26
Davis Wright Tremaine LLPdwt.com

This company offers custom-tailored service focusing on top-of-market excellence and innovation, partnering with clients to define success together

Law Practice ๐Ÿ‡บ๐Ÿ‡ธ 1,803 n/a
27
SWCA Environmental Consultantsswca.com

Experts deliver comprehensive solutions in environmental planning, permitting, cultural resource management, biological services, water resources management, air quality, and sustainability consulting.

Environmental Services ๐Ÿ‡บ๐Ÿ‡ธ Phoenix 1,746 1981
28
Rockefeller Capital Managementrcm.rockco.com

Offers premier financial advisory, wealth, asset, and investment management, connecting clients to unique solutions and opportunities. Serves individuals, families, businesses, and institutions.

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ New York 1,744 2018
29
Safeguard Globalsafeguardglobal.com

Building adaptive solutions for global organizations in workforce management, recruitment, payroll, onboarding, and more to enable smarter and efficient operations

Human Resources Services ๐Ÿ‡บ๐Ÿ‡ธ Austin 1,718 2008
30
Fried Frankfriedfrank.com

Advises leading corporations, investment funds, and financial institutions on their most critical legal needs and business opportunities globally.

Law Practice ๐Ÿ‡บ๐Ÿ‡ธ New York 1,690 1890
31
Dorsey & Whitney LLPdorsey.com

Provides legal advice and business partnership to global companies, specializing in mergers and acquisitions, capital markets, and complex litigation across various industries since 1912.

Law Practice ๐Ÿ‡บ๐Ÿ‡ธ Minneapolis 1,611 1912
32
COLSAcolsa.com

A technology services company that provides engineering, IT, and programmatic solutions for Government and Commercial customers, focusing on innovation, integrity, and teamwork

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Huntsville 1,535 1980
33
Stoutstout.com

Global advisory firm specializing in corporate finance, accounting, transaction advisory, valuation, financial disputes, claims, and investigations for diverse clients.

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,484 1991
34
Bradley Arant Boult Cummings LLPbradley.com

A national law firm providing skilled legal services with exceptional client service and deep industry knowledge, tailored solutions for business clients

Law Practice ๐Ÿ‡บ๐Ÿ‡ธ Birmingham 1,462 1870
35
Tria Federal (Tria)triafed.com

Provides digital transformation solutions and advisory services to federal health and public safety agencies, addressing capability gaps for faster, smarter operations.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Arlington 1,412 2022
36
Excel Sports Managementexcelsm.com

Management and marketing agency representing top-tier sports talent, blue-chip brands, and marquee properties across multiple major cities.

Spectator Sports ๐Ÿ‡บ๐Ÿ‡ธ 1,407 2002
37
Auxisauxis.com

Helps senior executives achieve peak back-office performance through nearshore outsourcing, cloud computing, shared services, RPA, and finance/IT solutions for cost savings and innovation.

Outsourcing and Offshoring Consulting ๐Ÿ‡บ๐Ÿ‡ธ Fort Lauderdale 1,398 1997
38
Torch Technologies, Inc.torchtechnologies.com

Employee-owned business, consistently recognized for strong performance, positive workplace culture, and ethical practices in consulting and professional services.

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Huntsville 1,338 2002
39
SEPsep.com

SEP develops high-quality software solutions for critical industries, creating impactful products with a team of skilled developers and designers Employee-owned and award-winning for its company culture

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Carmel 1,310 1988
40
Volkert, Inc.volkert.com

A long-standing engineering firm providing design services in transportation, aviation, construction, public works, utilities, property acquisition, and environmental engineering

Civil Engineering ๐Ÿ‡บ๐Ÿ‡ธ Mobile 1,265 1925
41
One World Global Services LLConeworldglobalservices.com

Provides translation, interpretation, and customer care services globally, bridging communication gaps for businesses and helping achieve international goals with cost-effective, on-time solutions.

Translation and Localization ๐Ÿ‡บ๐Ÿ‡ธ Miami 1,233 2015
42
Primary Servicesprimaryservices.com

Connects accounting, IT, HR, marketing, and administrative professionals with contract, temp-to-perm, and direct-hire positions at Fortune 500 clients in Texas and Oklahoma.

Staffing and Recruiting ๐Ÿ‡บ๐Ÿ‡ธ Houston 1,215 1988
43
Alliance Technical Groupalliancetg.com

A leading provider of source testing, emissions monitoring, and analytical services in the United States, offering quick proposals, regulatory compliance, and accurate testing

Environmental Services ๐Ÿ‡บ๐Ÿ‡ธ Decatur 1,196 2000
44
Ultimus Fund Solutionsultimusfundsolutions.com

Provides comprehensive, tech-enhanced fund administration, accounting, middle office, and investor solutions for registered funds, private funds, and public plans, offering tailored services.

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ Cincinnati 1,098 1999
45
Radiance Technologiesradiancetech.com

A 100% employee-owned small business prime contractor specializing in cyber solutions, systems engineering, technology development, intelligence community support, and government program support

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Huntsville 1,081 1999
46
Yulista Holding LLCyulista.com

A company in the aerospace and defense industry providing value-added solutions in aviation, ground, logistics, training, management support, engineering, and technical services

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Huntsville 1,056 2002
47
3Cloud3cloudsolutions.com

Leading Microsoft Azure partner, offering expertise in infrastructure, data, analytics, and application innovation to solve complex business problems.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Downers Grove 1,042 2016
48
EOS Worldwideeosworldwide.com

Provides a business operating system, principles, and tools to entrepreneurial companies for frustration-free organization, growth, and strengthened key components.

Professional Training and Coaching ๐Ÿ‡บ๐Ÿ‡ธ Ann Arbor 1,010 2008
49
New York Life Investment Managementnewyorklifeinvestments.com

Global asset management business offering clients access to specialized investment teams through a family of affiliated boutiques Providing comprehensive investment solutions for clients

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ New York 997 n/a
50
PRODENSAprodensa.com

Supports foreign investors in manufacturing industry with market analysis, expansions, site selection, real estate, startups, shelter, and consulting for ongoing operations.

Business Consulting and Services ๐Ÿ‡บ๐Ÿ‡ธ 992 1985

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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.

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