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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Worleyworley.com
Global professional services company specializing in energy, chemicals, and resources, providing integrated solutions for project delivery and asset management |
37,425 | |||
| 2 |
Macquarie Groupmacquarie.com
Global financial services organization empowering people to innovate and invest for a better future in 34 markets Visit wwwmacquariecom for more information |
20,757 | |||
| 3 | 17,363 | ||||
| 4 |
KPMG Australiakpmg.com.au
Professional services firm offering audit, tax, legal, management consulting, and digital solutions to diverse industries and sectors in Australia. |
9,429 | |||
| 5 |
Deloitte Australiadeloitte.com.au
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 |
7,674 | |||
| 6 |
PwC Australiapwc.com.au
Professional services focused on building trust in society and solving important problems through insights and expertise from people. |
5,636 | |||
| 7 |
WSP in Australiawsp.com
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 |
4,487 | |||
| 8 |
NGO Recruitmentngorecruitment.com
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 |
3,516 | |||
| 9 |
Hudsonau.hudson.com
We specialize in matching individuals with the right roles, providing talent solutions across the employee lifecycle to drive business success and transform lives |
2,664 | |||
| 10 |
EML Groupeml.com.au
Specialists in work health and safety, offering tailored injury prevention, claims management, and return-to-work support for businesses and injured workers |
2,474 | |||
| 11 |
Allensallens.com.au
An international organization with a rich history of shaping legislation and regulatory frameworks, providing global legal services to clients worldwide |
2,180 | |||
| 12 |
Planitplanit.com
Global leader in quality engineering and assurance solutions, empowering businesses to enhance software quality and delivery processes through continuous growth and excellence |
1,931 | |||
| 13 |
Clayton Utzclaytonutz.com
Provides tailored legal advice and services to private sector and government clients across Australia with honesty and entrepreneurial spirit. |
1,876 | |||
| 14 |
Grant Thornton Australiagrantthornton.com.au
Experienced professionals providing audit, assurance, tax, and advisory services with a focus on client care and principled execution. |
1,739 | |||
| 15 |
Talenttalentinternational.com
Connects experts in technology and transformation with companies. Focuses on building skilled teams and rethinking tech solutions, delivering value through a people-first approach. |
1,608 | |||
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. | |||||
| 16 |
AS White Globalaswhiteglobal.com
Specializing in international staffing solutions since 2011, we help Australian companies build highly capable international teams for long-term success |
1,583 | |||
| 17 |
Corrs Chambers Westgarthcorrs.com.au
Providing comprehensive legal services including major transactions, complex disputes, strategic advice, and international law expertise for global clients. |
1,582 | |||
| 18 |
Chandler Macleodchandlermacleod.com
Providing recruitment, staffing, and workforce management services with psychological assessment to help clients select, retain, and develop talent. |
1,520 | |||
| 19 |
IPH Limitediphltd.com.au
An international group providing intellectual property services through a network of leading IP firms and an online trademark application platform |
1,394 | |||
| 20 |
Markmark.com.au
A marketing agency founded in 2007, specializing in digital, direct, and data marketing services for various clients in Sydney and Melbourne |
1,322 | |||
| 21 |
UBTuniversalbusinessteam.com
Global consulting organization supporting family businesses with business advisory, coaching, and training programs, while also providing support to education, charity, and disaster relief initiatives |
1,079 | |||
| 22 |
Atturraatturra.com
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 |
1,049 | |||
| 23 |
Sparke Helmore Lawyerssparke.com.au
National Australian law firm specializing in corporate, insurance, government, property, workplace law with over 950 professionals across ten offices. |
1,025 | |||
| 24 |
Knight Frank Australiaknightfrank.com.au
Providing expert commercial and residential property advisory and transactional services with innovative, data-driven solutions and extensive local market knowledge. |
913 | |||
| 25 |
Wotton Kearneywottonkearney.com
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 |
901 | |||
| 26 |
Thomsonstglaw.com.au
Large Australian law firm with over 800 staff and 155 partners, operating across six major cities providing corporate legal services. |
846 | |||
| 27 |
NRI Australia & New Zealandnri-anz.com
Provider of transformative digital solutions through strategy, consulting, infrastructure, and managed IT services, with global reach and a passionate, customer-focused team |
846 | |||
| 28 |
HLB Mann Juddhlb.com.au
Award-winning chartered accounting firm providing financial advisory, business advice, and personalized client service across Australia, New Zealand, and Fiji. |
736 | |||
| 29 |
Ambitionambitiongrouplimited.com
Specialized international recruitment firm with diverse expertise in various industries, providing career opportunities and personalized service to clients and candidates worldwide |
684 | |||
| 30 |
APP Corporationapp.com.au
Consultancy services in property and infrastructure, offering project management, advisory, risk management, and real estate services across Australia. |
677 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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.
More company lists in Sydney
- The largest companies in Sydney 912
- Multinational companies in Sydney 279
- Financial services firms in Sydney 205
- Financial Services companies in Sydney 143
- Publicly traded companies in Sydney 78
- Retail chains in Sydney 77
- Companies with a mobile app in Sydney 64
- Critical infrastructure operators in Sydney 63
- Investment Management companies in Sydney 60
- Corporate groups and holding companies in Sydney 57
- SaaS companies in Sydney 51
- IT Services and IT Consulting companies in Sydney 49
- Consulting firms in Sydney 47
- Hotel and hospitality groups in Sydney 41
- Subscription businesses in Sydney 40
- Education providers in Sydney 39
- Healthcare providers in Sydney 37
- Manufacturers in Sydney 36
- E-commerce companies in Sydney 35
- Venture capital and private equity firms in Sydney 33
- Real Estate companies in Sydney 32
- Retail companies in Sydney 32
- Software Development companies in Sydney 30
- AI companies in Sydney 28