# Top 30 professional services firms in Sydney

Tamtam tracks 93 professional services firms headquartered in Sydney. This list ranks the 30 largest by number of employees on LinkedIn, led by Worley, Macquarie Group and GHD. Their median headcount is 1,608. Half of them were founded in 1985 or later.

The professional services sector in Sydney is represented by large, well-established firms. Companies like Worley, a global professional services company specializing in energy and resources, and Macquarie Group, a global financial services organization, highlight the city's role as a hub for major corporate operations. GHD, a global network of professionals in engineering and environmental solutions, and KPMG Australia, offering audit, tax, and consulting services, further exemplify the scale of these operations.

This collection of companies shows a strong concentration of firms founded in the 20th century, indicating a long-standing presence and evolution of professional services in Sydney. The presence of multiple large accounting and consulting firms, such as Deloitte Australia and PwC Australia, alongside significant legal practices like Allens and Clayton Utz, points to a comprehensive and mature professional services landscape.

🇦🇺 Sydney · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Worley](https://www.tamtam.ai/c/worley) (worley.com)<br>Global professional services company specializing in energy, chemicals, and resources, providing integrated solutions for project delivery and asset management | Professional Services | 🇦🇺 Sydney | 37,425 |  |
| 2 | [Macquarie Group](https://www.tamtam.ai/c/macquarie-group) (macquarie.com)<br>Global financial services organization empowering people to innovate and invest for a better future in 34 markets Visit wwwmacquariecom for more information | Financial Services | 🇦🇺 Sydney | 20,757 | 1969 |
| 3 | [GHD](https://www.tamtam.ai/c/ghd) (ghd.com)<br>A global network of professionals providing integrated solutions in water, energy, and communities through engineering, environmental, design, and construction expertise | Civil Engineering | 🇦🇺 Sydney | 17,363 | 1928 |
| 4 | [KPMG Australia](https://www.tamtam.ai/c/kpmg-australia) (kpmg.com.au)<br>Professional services firm offering audit, tax, legal, management consulting, and digital solutions to diverse industries and sectors in Australia. | Business Consulting and Services | 🇦🇺 Sydney | 9,429 |  |
| 5 | [Deloitte Australia](https://www.tamtam.ai/c/deloitte-australia) (deloitte.com.au)<br>A forward-thinking professional services firm focused on cyber security, virtual reality, digital marketing, and tech integration across various industries, aiming to make a meaningful impact | Management Consulting | 🇦🇺 Sydney | 7,674 |  |
| 6 | [PwC Australia](https://www.tamtam.ai/c/pwc-australia) (pwc.com.au)<br>Professional services focused on building trust in society and solving important problems through insights and expertise from people. | Business Consulting and Services | 🇦🇺 Sydney | 5,636 |  |
| 7 | [WSP in Australia](https://www.tamtam.ai/c/wsp-in-australia) (wsp.com)<br>A leading professional services consulting firm providing technical expertise and strategic advice in various sectors, designing lasting solutions for future generations with integrated digital innovations | Professional Services | 🇦🇺 Sydney | 4,487 |  |
| 8 | [NGO Recruitment](https://www.tamtam.ai/c/ngo-recruitment) (ngorecruitment.com)<br>Specialists in not-for-profit sector recruitment with a focus on Australia, Asia Pacific, and international placements Services include executive search, permanent, temporary, and contract recruitment | Staffing and Recruiting | 🇦🇺 Sydney | 3,516 | 2004 |
| 9 | [Hudson](https://www.tamtam.ai/c/hudson-sydney) (au.hudson.com)<br>We specialize in matching individuals with the right roles, providing talent solutions across the employee lifecycle to drive business success and transform lives | Staffing and Recruiting | 🇦🇺 Sydney | 2,664 | 1985 |
| 10 | [EML Group](https://www.tamtam.ai/c/eml-group) (eml.com.au)<br>Specialists in work health and safety, offering tailored injury prevention, claims management, and return-to-work support for businesses and injured workers | Insurance | 🇦🇺 Sydney | 2,474 |  |
| 11 | [Allens](https://www.tamtam.ai/c/allens) (allens.com.au)<br>An international organization with a rich history of shaping legislation and regulatory frameworks, providing global legal services to clients worldwide | Law Practice | 🇦🇺 Sydney | 2,180 | 1822 |
| 12 | [Planit](https://www.tamtam.ai/c/planit) (planit.com)<br>Global leader in quality engineering and assurance solutions, empowering businesses to enhance software quality and delivery processes through continuous growth and excellence | IT Services and IT Consulting | 🇦🇺 Sydney | 1,931 | 1997 |
| 13 | [Clayton Utz](https://www.tamtam.ai/c/clayton-utz) (claytonutz.com)<br>Provides tailored legal advice and services to private sector and government clients across Australia with honesty and entrepreneurial spirit. | Law Practice | 🇦🇺 Sydney | 1,876 | 1833 |
| 14 | [Grant Thornton Australia](https://www.tamtam.ai/c/grant-thornton-australia) (grantthornton.com.au)<br>Experienced professionals providing audit, assurance, tax, and advisory services with a focus on client care and principled execution. | Accounting | 🇦🇺 Sydney | 1,739 |  |
| 15 | [Talent](https://www.tamtam.ai/c/talent) (talentinternational.com)<br>Connects experts in technology and transformation with companies. Focuses on building skilled teams and rethinking tech solutions, delivering value through a people-first approach. | Staffing and Recruiting | 🇦🇺 Sydney | 1,608 | 1995 |
| 16 | [AS White Global](https://www.tamtam.ai/c/as-white-global) (aswhiteglobal.com)<br>Specializing in international staffing solutions since 2011, we help Australian companies build highly capable international teams for long-term success | Staffing and Recruiting | 🇦🇺 Sydney | 1,583 | 2011 |
| 17 | [Corrs Chambers Westgarth](https://www.tamtam.ai/c/corrs-chambers-westgarth) (corrs.com.au)<br>Providing comprehensive legal services including major transactions, complex disputes, strategic advice, and international law expertise for global clients. | Law Practice | 🇦🇺 Sydney | 1,582 |  |
| 18 | [Chandler Macleod](https://www.tamtam.ai/c/chandler-macleod) (chandlermacleod.com)<br>Providing recruitment, staffing, and workforce management services with psychological assessment to help clients select, retain, and develop talent. | Human Resources Services | 🇦🇺 Sydney | 1,520 | 1959 |
| 19 | [IPH Limited](https://www.tamtam.ai/c/iph-limited) (iphltd.com.au)<br>An international group providing intellectual property services through a network of leading IP firms and an online trademark application platform | Law Practice | 🇦🇺 Sydney | 1,394 | 2014 |
| 20 | [Mark](https://www.tamtam.ai/c/mark-sydney) (mark.com.au)<br>A marketing agency founded in 2007, specializing in digital, direct, and data marketing services for various clients in Sydney and Melbourne | Advertising Services | 🇦🇺 Sydney | 1,322 | 2007 |
| 21 | [UBT](https://www.tamtam.ai/c/ubt) (universalbusinessteam.com)<br>Global consulting organization supporting family businesses with business advisory, coaching, and training programs, while also providing support to education, charity, and disaster relief initiatives | Business Consulting and Services | 🇦🇺 Sydney | 1,079 |  |
| 22 | [Atturra](https://www.tamtam.ai/c/atturra) (atturra.com)<br>An Australian-based advisory and IT solutions provider offering end-to-end transformation services, including advisory, cloud services, data integration, and managed services, to clients worldwide | IT Services and IT Consulting | 🇦🇺 Sydney | 1,049 |  |
| 23 | [Sparke Helmore Lawyers](https://www.tamtam.ai/c/sparke-helmore-lawyers) (sparke.com.au)<br>National Australian law firm specializing in corporate, insurance, government, property, workplace law with over 950 professionals across ten offices. | Law Practice | 🇦🇺 Sydney | 1,025 | 1882 |
| 24 | [Knight Frank Australia](https://www.tamtam.ai/c/knight-frank-australia) (knightfrank.com.au)<br>Providing expert commercial and residential property advisory and transactional services with innovative, data-driven solutions and extensive local market knowledge. | Real Estate | 🇦🇺 Sydney | 913 | 1896 |
| 25 | [Wotton Kearney](https://www.tamtam.ai/c/wotton-kearney) (wottonkearney.com)<br>Specializing in insurance, risk management, and dispute resolution, the company serves a wide range of clients with a focus on building lasting relationships and achieving the best outcomes | Law Practice | 🇦🇺 Sydney | 901 |  |
| 26 | [Thomsons](https://www.tamtam.ai/c/thomsons) (tglaw.com.au)<br>Large Australian law firm with over 800 staff and 155 partners, operating across six major cities providing corporate legal services. | Law Practice | 🇦🇺 Sydney | 846 |  |
| 27 | [NRI Australia & New Zealand](https://www.tamtam.ai/c/nri-australia-and-new-zealand) (nri-anz.com)<br>Provider of transformative digital solutions through strategy, consulting, infrastructure, and managed IT services, with global reach and a passionate, customer-focused team | IT Services and IT Consulting | 🇦🇺 Sydney | 846 | 1965 |
| 28 | [HLB Mann Judd](https://www.tamtam.ai/c/hlb-mann-judd) (hlb.com.au)<br>Award-winning chartered accounting firm providing financial advisory, business advice, and personalized client service across Australia, New Zealand, and Fiji. | Accounting | 🇦🇺 Sydney | 736 | 1982 |
| 29 | [Ambition](https://www.tamtam.ai/c/ambition-sydney) (ambitiongrouplimited.com)<br>Specialized international recruitment firm with diverse expertise in various industries, providing career opportunities and personalized service to clients and candidates worldwide | Staffing and Recruiting | 🇦🇺 Sydney | 684 | 1999 |
| 30 | [APP Corporation](https://www.tamtam.ai/c/app-corporation) (app.com.au)<br>Consultancy services in property and infrastructure, offering project management, advisory, risk management, and real estate services across Australia. | Business Consulting and Services | 🇦🇺 Sydney | 677 | 1989 |

## 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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## The same list elsewhere in Australia

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- [Professional services firms in Melbourne](https://www.tamtam.ai/l/professional-services-firms-melbourne) (76)

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