The professional services sector in Johannesburg is represented by a diverse group of firms, ranging from large established companies to mid-sized specialists. Key players include Adcorp Group, a workforce solutions provider, and DRA Global, an international engineering and project delivery specialist in mining. BDO South Africa offers audit, advisory, and tax services, while NTT DATA Middle East and Africa focuses on business and technology services. SNG Grant Thornton provides assurance, tax, and advisory services, and iqbusiness specializes in management consulting and digital transformation.
These companies collectively demonstrate a strong concentration in human resources, accounting, IT, and general business consulting. A notable pattern is the prevalence of firms founded in the 1970s and 1980s, such as Adcorp Group (1975), DRA Global (1984), and SNG Grant Thornton (1985), indicating a mature professional services market with many long-standing entities.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Adcorp Groupadcorpgroup.com
A workforce solutions provider offering diverse talent management solutions in various industries and regions to shape markets and economies |
2,851 | |||
| 2 |
DRA Globaldraglobal.com
An international group specializing in engineering, project delivery, and operations management in the mining industry, offering services across various commodities worldwide |
2,502 | |||
| 3 |
BDO South Africabdo.co.za
A leading provider of audit, advisory, and tax services in South Africa, offering practical solutions through exceptional client relationships and global network support |
1,862 | |||
| 4 |
NTT DATA Middle East and Africaservices.global.ntt
Global innovator in business and technology services, specializing in helping clients innovate, optimize, and transform through R&D investments and diverse expertise |
1,318 | |||
| 5 |
SNG Grant Thorntongrantthornton.co.za
Global leader in independent assurance, tax, and advisory services, offering personalized solutions to clients worldwide through proactive teams and international expertise |
1,223 | |||
| 6 |
iqbusinessiqbusiness.net
Provides management consulting, digital transformation, cloud, security services, and business growth solutions across Africa with a focus on excellence. |
889 | |||
| 7 |
LabourNetlabournet.com
LabourNet Management offers comprehensive HR solutions to help employers manage their human capital effectively, mitigate risks, and attract top talent |
870 | |||
| 8 | 847 | ||||
| 9 |
WSP in Africawsp.com
An engineering consulting firm providing a wide range of technical expertise in areas like urban planning, sustainable design, and energy development |
701 | |||
| 10 |
DVTdvtsoftware.com
South African technology provider offering custom software, AI, and data engineering services with local engagement and global scale expertise. |
689 | |||
| 11 |
Restaurant Staffrestaurantcareers.co.za
Specializing in recruiting management & chefs for the Restaurant Industry, using tested techniques to find passionate individuals for various positions |
644 | |||
| 12 |
Werksmans Attorneyswerksmans.com
Leading South African law firm offering corporate and commercial legal services to multinationals, listed companies, financial institutions, entrepreneurs, and government clients nationwide and across Africa |
540 | |||
| 13 |
21st Century21century.co.za
Specialist consultancy offering remuneration, organization development, and change services with national and international reach, supported by comprehensive salary survey database |
531 | |||
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. | |||||
| 14 |
handelhandel.co.za
Specializing in B2B marketing, we align sales and marketing strategies to drive business growth and help clients achieve commercial objectives |
496 | |||
| 15 |
Quest Staffing Solutionsquest.co.za
Leading recruitment agency in South Africa and Africa, specializing in white-collar staffing with over 40 years of experience and a Level 1 BBBEE rating |
476 | |||
| 16 |
Network Recruitmentnetworkrecruitmentinternational.com
Specialist recruitment agency offering outstanding solutions in Finance, IT, Engineering, and Supply Chain for 30 years, with focus on developing relationships and delivering results |
444 | |||
| 17 |
Plus 94 Researchplus94.co.za
Market research firm in South Africa and Africa, offering comprehensive research services with a focus on professionalism, integrity, and actionable insights |
389 | |||
| 18 |
Afrishore BPOafrishorebpo.com
Afrishore provides compliant outsourced contact center solutions and BPO services globally, melding technology with skilled professionals to ensure high-quality service |
354 | |||
| 19 |
MLC Groupmlc-group.com
A global firm providing quantity surveying and construction cost consulting services with over 8,000 projects completed across five continents since 1936 |
345 | |||
| 20 |
Falcorp Technologiesfalcorp.co.za
Empowering businesses in South Africa with cutting-edge technology solutions through strategic partnerships, expert skills, and innovative thinking in IT services |
312 | |||
| 21 |
JG Afrika (Pty) Ltdjgafrika.com
A leading engineering and environmental consultancy in South Africa offering civil, structural, and environmental services throughout Africa and abroad with a team of 300 professionals |
240 | |||
| 22 |
Jones & Wagener (Pty) Ltdjaws.co.za
Specialist consulting engineers and scientists offering innovative, environmentally supportive solutions in structural, geotechnical, mine infrastructure, waste, tailings, and environmental engineering |
225 | |||
| 23 |
Tower Group (Pty) Ltdtowergroup.co.za
The company provides custom-designed staffing solutions with a focus on quality, diversity, and positivity in the workplace for over four decades |
195 | |||
| 24 |
Ovations Technologies (Pty) Ltdovationsgroup.com
Digital enablement and cloud adoption expert, providing guidance and solutions in process automation, data analytics, and financial crime prevention for organizations |
187 | |||
| 25 |
Cornerstone Financial Services Groupcfsg.co.za
An independent financial services provider offering personalized strategies for individuals and businesses in 8 key areas, focusing on holistic financial wellness |
44 | |||
| 26 |
Absolute HRabsolutehr.co.za
Specializing in helping Small Business Owners and Managers navigate employee issues, offering professional consultancy services or membership to access HR guidance and resources |
8 | |||
| 27 |
Dara Consultingdaraconsulting.co.za
Specialist advisory firm providing services to private healthcare, real estate, FMCG, and retail sectors, offering expertise and insights tailored to each industry |
3 | |||
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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 14, 2026.
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