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Top 50 professional services firms in South Carolina

Tamtam tracks 51 professional services firms headquartered in South Carolina. This list ranks the 50 largest by number of employees on LinkedIn, led by Nelson Mullins Riley & Scarborough, Cargo and Snelling Staffing. Their median headcount is 225. Half of them were founded in 2000 or later. The most common headquarters are Charleston (13), Greenville (8) and Columbia (7).

馃嚭馃嚫 South Carolina50 companiesUpdated Nov 13, 2026

The professional services sector in South Carolina is characterized by a mix of established firms and younger companies, primarily focused on staffing, legal services, and healthcare. Notable companies include Nelson Mullins Riley & Scarborough, a legal firm established in 1897, and Cargo, an advertising agency founded in 2006. Staffing and recruiting firms like Snelling Staffing and HireQuest Inc. also feature prominently, alongside healthcare providers such as Ob Hospitalist Group.

Many of these firms are headquartered in Greenville and Columbia, indicating these cities as key hubs for professional services in the state. The presence of multiple staffing and recruiting companies suggests a strong demand for workforce solutions across various industries in South Carolina.

#CompanyIndustryHeadquarters EmployeesFounded
1
Nelson Mullins Riley & Scarboroughnelsonmullins.com

Established in 1897, this firm with over 1,000 attorneys and professionals provides legal services across 33 offices in 17 states

Law Practice 馃嚭馃嚫 Columbia 2,142 1897
2
Cargothecargoagency.com

Cargo specializes in marketing and advertising to Small Businesses, using creative strategies to build awareness and loyalty for a wide range of brands

Advertising Services 馃嚭馃嚫 Greenville 1,667 2006
3
Snelling Staffingsnelling.com

Industry-leading staffing and recruitment firm since 1951, specializing in matching exceptional talent with exceptional opportunities using award-winning expertise and technology

Staffing and Recruiting 馃嚭馃嚫 Goose Creek 1,624 1951
4
HireQuest Inc.hirequest.com

A family of staffing companies providing temporary employment in various industries, emphasizing efficiency and offering franchise opportunities while supporting charitable causes

Staffing and Recruiting 馃嚭馃嚫 Goose Creek 1,233 2002
5
TRS Staffing Solutionstrsstaffing.com

World leading engineering recruitment agency specializing in professional, engineering, technical, and field talent supply for organizations globally Offering complete specialist resourcing service for candidates and employers

Staffing and Recruiting 馃嚭馃嚫 Greenville 1,198 1984
6
Elliott Daviselliottdavis.com

A leading US business solutions firm with over a century of experience in tax, assurance, and consulting services Follow for updates and visit their website for more information

Professional Services 馃嚭馃嚫 Greenville 1,167 1920
7
HTIhtijobs.com

HTI specializes in Workplace Strategies, Employee Life Cycle Management, and Professional Recruiting to connect job seekers with the right talent for employers

Staffing and Recruiting 馃嚭馃嚫 Greenville 982 1999
8
Ob Hospitalist Groupobhg.com

Leader in providing real-time triage and hospital-based obstetric coverage to ensure consistent, timely care for pregnant patients and support for local OB/GYN physicians

Hospitals and Health Care 馃嚭馃嚫 Greenville 763 2006
9
Find Great People | FGPfgp.com

National talent acquisition and HR consulting firm focused on finding great people for great companies, with emphasis on growth, gratitude, and impact

Staffing and Recruiting 馃嚭馃嚫 Greenville 727 1982
10
McAngus Goudelock & Couriemgclaw.com

A metrics-driven law firm specializing in serving the insurance industry, insureds, and self-insureds Known for their focus on results

Law Practice 馃嚭馃嚫 Columbia 691 1995
11
Life Cycle Engineeringlce.com

Provides consulting, engineering, IT, and education solutions for private industry, government, and military, focusing on reliability, technology, engineering, and education services

Business Consulting and Services 馃嚭馃嚫 Charleston 588 1976
12
Medico Healthcare Services & Technologiesmedicoinc.com

Healthcare services and technology company specializing in medical billing, consulting, practice analytics, and revenue cycle management solutions for healthcare practices

Hospitals and Health Care 馃嚭馃嚫 Columbia 566 1995
13
HKA Enterpriseshkaa.com

Corporate workforce solutions provider offering Employer of Record, HR, staffing services with cost savings, high-touch service, and customized solutions for businesses

Staffing and Recruiting 馃嚭馃嚫 Duncan 547 1977
14
LS3P ASSOCIATES LTD.ls3p.com

An architecture, interiors, and planning firm with 60 years of design excellence, focusing on creating outstanding spaces for various purposes

Architecture and Planning 馃嚭馃嚫 Charleston 543 1963
15
LexiCodelexicode.com

Industry-leading Health Information Management services with a team of over 1,700 credentialed professionals offering medical coding, auditing, education, and consulting solutions

Hospitals and Health Care 馃嚭馃嚫 Columbia 499 1981
16
McMillan Pazdan Smith Architecturemcmillanpazdansmith.com

Architecture, advisory services, planning, and interior design firm in the Southeast with a focus on collaboration, innovation, and meaningful impact

Architecture and Planning 馃嚭馃嚫 Greenville 489 1955
17
Motley Ricemotleyrice.com

A leading plaintiffs' litigation firm known for landmark cases in asbestos, tobacco, 9/11, catastrophic injury, consumer fraud, and more

Law Practice 馃嚭馃嚫 Mt. Pleasant 451 2003
18
Infrastructure Consulting & Engineeringice-eng.com

A transportation consulting and engineering firm providing quality services in the Southeast, with recognized excellence, dedicated client focus, and over 400 professionals

Civil Engineering 馃嚭馃嚫 West Columbia 450 2005
19
ESP Associates, Inc.espassociates.com

A multi-disciplinary engineering firm offering civil engineering, surveying, environmental, and construction services to government agencies, developers, and various industries

Design Services 馃嚭馃嚫 Fort Mill 398 1986
20
ORBIS Incorbisinc.net

A Veteran Owned Small Business providing engineering, technical, and consulting services to the Department of Defense with headquarters in Charleston, SC

Defense and Space Manufacturing 馃嚭馃嚫 Charleston 302 2000
21
Haynsworth Sinkler Boyd, P.A.hsblawfirm.com

This company provides innovative legal solutions across various sectors, offering advice, counsel, and representation in regional, national, and international settings

Law Practice 馃嚭馃嚫 Charleston 262 1887
22
Blue Acorn iCiblueacornici.com

The company specializes in digital customer experience, analytics, digital commerce, and experience-driven commerce offerings to enhance interactions and drive business growth

IT Services and IT Consulting 馃嚭馃嚫 Charleston 257 2008
23
MRINetworkmrinetwork.com

Global network of talent advisors providing executive search and recruitment services worldwide, recently acquired by a nationwide franchisor offering staffing solutions in various industries

Staffing and Recruiting 馃嚭馃嚫 Goose Creek 252 1965
24
eGroup Enabling Technologiesegroup-us.com

A recognized leader in Data and AI, Cloud, Hybrid Cloud, Data Center, Security, and Managed Services, empowering businesses with expertise and solutions

IT Services and IT Consulting 馃嚭馃嚫 Charleston 229 n/a
25
Pinnacle Consulting LLCpinnacleconsultingllc.com

IT solutions company offering tailored business processes, focusing on customer needs with accountable and adaptable solutions, emphasizing industry best practices and building lasting relationships

IT Services and IT Consulting 馃嚭馃嚫 Columbia 225 2003

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26
Recruiting Solutionsrecruitingsolutionsonline.com

Independent family-owned staffing business, building long-term partnerships with clients and field associates Specialized in providing talent solutions for improved productivity and company culture

Staffing and Recruiting 馃嚭馃嚫 Columbia 220 1992
27
1 POINT SYSTEM LLC1pointsys.com

A consulting firm with top industry leaders offering talent acquisition solutions and IT personnel management strategies to experienced professionals

Staffing and Recruiting 馃嚭馃嚫 Fort Mill 211 2015
28
Apple & Associatesappleassoc.com

An executive search firm specializing in industries such as Medical Device, Pharmaceutical, and Software, filling permanent and contract positions globally

Staffing and Recruiting 馃嚭馃嚫 Warrenville 184 1993
29
GEL Laboratories, LLCgel.com

A leading provider of environmental analytical services since 1981, offering chemical, radiochemical, and specialty analyses with state-of-the-art instrumentation and accreditation from various agencies

Environmental Services 馃嚭馃嚫 Charleston 184 1981
30
LINKuseinktothink.com

A consulting agency that combines creative and analytical approaches to solve challenging problems, drive change, engage people, discover opportunities, and inspire action

Business Consulting and Services 馃嚭馃嚫 Charleston 184 2022
31
Davis & Floyd, Inc.davisfloyd.com

Davis & Floyd designs and engineers innovative solutions to improve communities through construction, environmental, government, transportation, and water projects

Civil Engineering 馃嚭馃嚫 Greenwood 183 1954
32
Turner Padget Graham & Laney, P.A.turnerpadget.com

A leading law firm with a rich history and expanding presence in the Southeast, offering practical legal advice and expertise in various areas of law

Law Practice 馃嚭馃嚫 Columbia 182 1929
33
Strategic Information Groupstrategic.com

Helping companies implement ERP, CRM, and Quality Management systems efficiently to maximize enterprise technology value and achieve corporate goals.

Software Development 馃嚭馃嚫 Rock Hill 152 1992
34
Armada Analyticsarmadaanalytics.com

A privately-owned commercial real estate services firm specializing in multifamily assets offering asset management, due diligence, engineering, environmental assessment, insurance review, underwriting, and zoning services

Real Estate 馃嚭馃嚫 Greenville 125 2006
35
Rush & Companyrushandcompany.com

Premier executive search firm specializing in Fiber, Fabric, and Fashion Industries Expertise in recruiting top-tier candidates for various roles in Textile Industry Empowering clients with exceptional talent

Staffing and Recruiting 馃嚭馃嚫 Charleston 60 2003
36
WORLD CLASS MAINTENANCEworldclassmaintenance.org

Maintenance and Reliability Best Practices training and consulting services provided by a company based in Clemson, SC to meet organizational needs

Facilities Services 馃嚭馃嚫 Central 34 2018
37
Archetype SCarchetypesc.com

Providing innovative solutions for security, productivity, and user experience needs since 1998 Trusted by startups to Fortune 500 companies for tailored, collaborative services

IT Services and IT Consulting 馃嚭馃嚫 Myrtle Beach 30 2014
38
Atrium Economicsatriumecon.com

Providing objective expertise and critical thinking to address client needs in the energy industry, forming lasting relationships through collaborative and effective work

Business Consulting and Services 馃嚭馃嚫 Hilton Head Island 25 2020
39
Development Resource Group, LLCdrgpllc.com

A company focused on achieving success through innovation, ingenuity, and collaboration, creating a unique design culture for team members to thrive

Civil Engineering 馃嚭馃嚫 Myrtle Beach 17 2019
40
ZettaPrime Inczettaprime.com

A technology consulting and systems support company founded in 2013, providing professional services, management consulting, staffing, and helping individuals and businesses unlock their potential

IT Services and IT Consulting 馃嚭馃嚫 Lexington 15 2014
41
Harrell, Martin & Peace, P.A.harrellmartinpeace.com

A law firm offering services in Real Estate, Construction, Corporate, Collection, Estate Planning, Probate, Family, General Litigation, and DUI Defense with a focus on client relationships

Law Practice 馃嚭馃嚫 Chapin 14 1995
42
The Middleton Groupthemiddletongroup.net

This firm specializes in sustainable architecture and environmentally-conscious design, focusing on minimizing negative environmental impact while prioritizing occupant comfort and efficiency

Architecture and Planning 馃嚭馃嚫 North Charleston 14 2007
43
Global Trust Management Consulting LLPglobaltrust.us

International management consulting firm specializing in solving problems for manufacturing clients in operations, business development, project management, and growth strategy

Business Consulting and Services 馃嚭馃嚫 Spartanburg 12 2013
44
Burkett Financial Services, LLCburkettfs.com

Comprehensive financial and investment management services for affluent clients, focusing on planning, investing, estate, tax, and retirement, with a team approach and client-centric philosophy

Financial Services 馃嚭馃嚫 West Columbia 10 2000
45
The Flippin Designertheflippindesigner.com

Offering interior design, project management, and floor plan layouts, creating personalized and meaningful spaces for residential and commercial clients

Design Services 馃嚭馃嚫 Charleston 8 n/a
46
IAS Cloud, llciascloud.com

Manufacturing solutions provider offering process improvement, project management, lean manufacturing, reliability engineering, and supply chain management to drive production and profitability

Business Consulting and Services 馃嚭馃嚫 Greer 8 1993
47
Cullen Consulting LLCcullenconsult.com

Global network of technology and product development professionals specializing in clean energy solutions, including hydrogen technology, powertrain electrification, energy storage, and strategic planning

Services for Renewable Energy 馃嚭馃嚫 Charleston 8 2019
48
Smallworldsmallworldus.com

A global consulting firm focused on driving innovation and leadership in businesses worldwide through digital solutions and sustainable impact

Software Development 馃嚭馃嚫 Charleston 7 2016
49
EvenStreamsevenstreams.com

A Professional Services company specializing in architecture, implementing, and integrating data center, cloud, and transformation solutions for US customers

IT Services and IT Consulting 馃嚭馃嚫 Charleston 6 2014
50
First Class Recruitingfirstclassrecruiting.net

Professional recruiting firm in Greenville, SC specializing in IT, Engineering, Sales, Management, Accounting, and HR consulting services Veteran-owned and operated

Staffing and Recruiting 馃嚭馃嚫 Greer 5 2015

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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 13, 2026.

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