# Professional services firms headquartered in Melbourne

Tamtam tracks 76 professional services firms headquartered in Melbourne. This list ranks the 30 largest by number of employees on LinkedIn, led by SEO, Healthcare Australia and Findex. Their median headcount is 933. Half of them were founded in 1984 or later.

These professional services firms in Melbourne are primarily large enterprises, many with a national or international reach. The list features a strong presence of legal services, with firms like HWLE Lawyers providing commercial legal services, Slater and Gordon Lawyers focusing on consumer law, and Maurice Blackburn Lawyers advocating for social justice. Other notable firms include SEO, a digital marketing agency, and Findex, offering integrated financial advisory and accounting services.

The data highlights a concentration of firms in the legal sector, indicating a robust and diverse legal services market in Melbourne. Additionally, firms such as Woods Bagot and Architectus represent the architecture and planning industries, demonstrating a blend of specialized professional services.

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

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [SEO](https://www.tamtam.ai/c/seo) (optimising.com.au)<br>A leading SEO agency with over 15 years of experience, offering in-house services for web development, PR, copywriting, and digital marketing | Advertising Services | 🇦🇺 Melbourne | 10,205 | 1999 |
| 2 | [Healthcare Australia](https://www.tamtam.ai/c/healthcare-australia) (healthcareaustralia.com.au)<br>A healthcare staffing agency offering solutions to the growing nursing and medical skills shortage, allowing professionals flexibility in their work | Health and Human Services | 🇦🇺 Melbourne | 2,346 |  |
| 3 | [Findex](https://www.tamtam.ai/c/findex) (findex.com.au)<br>Provider of integrated financial advisory and accounting services across Australia and New Zealand, focusing on holistic, technology-driven client solutions. | Financial Services | 🇦🇺 Melbourne | 2,004 | 1987 |
| 4 | [HWLE Lawyers](https://www.tamtam.ai/c/hwle-lawyers) (hwlebsworth.com.au)<br>Providing expert commercial legal services across Australia with high partner involvement, focusing on client outcomes and efficient problem-solving. | Law Practice | 🇦🇺 Melbourne | 1,914 |  |
| 5 | [IPA](https://www.tamtam.ai/c/ipa) (synergieaustralia.com.au)<br>A national recruitment agency in Australia, providing temporary, permanent, and diversity recruitment services while supporting people with disabilities | Staffing and Recruiting | 🇦🇺 Melbourne | 1,838 | 1984 |
| 6 | [CyberCX](https://www.tamtam.ai/c/cybercx)<br>Provides comprehensive cybersecurity services including consulting, incident response, security testing, and managed solutions to organizations across various sectors, ensuring digital resilience. | Computer and Network Security | 🇦🇺 Melbourne | 1,431 | 2019 |
| 7 | [Slater and Gordon Lawyers](https://www.tamtam.ai/c/slater-and-gordon-lawyers) (slatergordon.com.au)<br>A leading consumer law firm in Australia providing accessible and expert legal services in Compensation Law, Class Actions, Employment Law, and more | Law Practice | 🇦🇺 Melbourne | 1,298 | 1935 |
| 8 | [Woods Bagot](https://www.tamtam.ai/c/woods-bagot) (woodsbagot.com)<br>Global design studio with 17 studios in 6 regions, specializing in Architecture, Interiors, and Masterplanning Emphasizing collaboration and data-driven predictions of human behavior | Architecture and Planning | 🇦🇺 Melbourne | 1,233 | 1869 |
| 9 | [Hall & Wilcox](https://www.tamtam.ai/c/hall-and-wilcox) (hallandwilcox.com.au)<br>Leading Australian law firm providing innovative, client-focused legal services with a commitment to community, technology, and commercial success. | Law Practice | 🇦🇺 Melbourne | 1,159 | 1917 |
| 10 | [Urbis](https://www.tamtam.ai/c/urbis) (urbis.com.au)<br>Urban development consultancy providing expertise in planning, design, policy, heritage, valuations, transactions, economics, and research for better city and community outcomes | Business Consulting and Services | 🇦🇺 Melbourne | 1,139 | 1963 |
| 11 | [Maurice Blackburn Lawyers](https://www.tamtam.ai/c/maurice-blackburn-lawyers) (mauriceblackburn.com.au)<br>Leading plaintiff and social justice law firm in Australia, advocating for those who can't afford legal representation with over 100 years of history | Law Practice | 🇦🇺 Melbourne | 1,107 | 1919 |
| 12 | [Mills Oakley](https://www.tamtam.ai/c/mills-oakley) (millsoakley.com.au)<br>A national law firm offering expertise in key commercial practice areas, providing superior service and value for clients at every stage | Law Practice | 🇦🇺 Melbourne | 1,100 | 1864 |
| 13 | [Architectus](https://www.tamtam.ai/c/architectus) (architectus.com.au)<br>Architectural design practice focused on creating elegant, functional, and sustainable solutions across various sectors with a collaborative and human-centric approach | Architecture and Planning | 🇦🇺 Melbourne | 1,093 | 2001 |
| 14 | [PKF - Australia](https://www.tamtam.ai/c/pkf-australia) (pkf.com.au)<br>A global community of business and wealth advisors creating opportunities for client, employee, and community success through a network of member firms | Accounting | 🇦🇺 Melbourne | 956 | 1968 |
| 15 | [Gadens](https://www.tamtam.ai/c/gadens) (gadens.com)<br>Providing comprehensive legal services across banking, corporate, disputes, employment, IP, real estate, supporting complex client needs nationwide. | Law Practice | 🇦🇺 Melbourne | 933 |  |
| 16 | [Maddocks](https://www.tamtam.ai/c/maddocks) (maddocks.com.au)<br>An independent Australian law firm with offices in Canberra, Melbourne, and Sydney, providing practical legal services to corporations, businesses, and governments | Law Practice | 🇦🇺 Melbourne | 928 | 1885 |
| 17 | [Lander & Rogers](https://www.tamtam.ai/c/lander-and-rogers) (landers.com.au)<br>Providing practical, commercial legal advice with exceptional client service across government, insurance, real estate, retail, private clients, and technology sectors. | Law Practice | 🇦🇺 Melbourne | 833 |  |
| 18 | [Hassell](https://www.tamtam.ai/c/hassell) (hassellstudio.com)<br>An international design practice with studios worldwide, creating the best places people love through holistic thinking and integrated design teams | Architecture and Planning | 🇦🇺 Melbourne | 791 | 1938 |
| 19 | [Mantel](https://www.tamtam.ai/c/mantel) (mantelgroup.com.au)<br>Next-gen consultancy specializing in AI, data, digital, security, and cloud solutions to transform business operations with a people-focused culture. | IT Services and IT Consulting | 🇦🇺 Melbourne | 786 |  |
| 20 | [Opteon AUS & NZ](https://www.tamtam.ai/c/opteon-aus-and-nz) (opteonsolutions.com)<br>A national provider of valuation and property advisory services with expertise in residential, commercial, government, agribusiness, and more for various clients | Real Estate | 🇦🇺 Melbourne | 754 | 2005 |
| 21 | [aecc](https://www.tamtam.ai/c/aecc) (partner.aeccglobal.com)<br>An international student recruitment organization guiding students through the education and immigration process, serving clients worldwide with personalized and ethical assistance | Education Administration Programs | 🇦🇺 Melbourne | 683 |  |
| 22 | [NDY](https://www.tamtam.ai/c/ndy) (ndy.com)<br>The company focuses on delivering successful outcomes for challenging projects by fostering client relationships based on trust, collaboration, and innovation | Engineering Services | 🇦🇺 Melbourne | 680 | 1972 |
| 23 | [KordaMentha](https://www.tamtam.ai/c/kordamentha) (kordamentha.com)<br>An independent advisory firm offering cybersecurity, financial crime, forensic, real estate, and restructuring services with over 400 specialists in Asia-Pacific | Business Consulting and Services | 🇦🇺 Melbourne | 650 | 2002 |
| 24 | [ASP Ships Group](https://www.tamtam.ai/c/asp-ships-group) (aspships.com)<br>Global maritime services provider offering ship management, technical support, crew and marine logistics, bunkering, and commercial management with a network of international offices | Maritime | 🇦🇺 Melbourne | 640 |  |
| 25 | [DWS](https://www.tamtam.ai/c/dws-melbourne) (dws.hcltech.com)<br>A leading Australian IT and Management Consulting Services Group offering a wide range of services to corporate and government clients | IT Services and IT Consulting | 🇦🇺 Melbourne | 638 | 1991 |
| 26 | [Public Sector People](https://www.tamtam.ai/c/public-sector-people) (publicsectorpeople.com.au)<br>Specialized recruitment agency focusing on sourcing top talent for the public sector, offering tailored solutions and dedicated consultants for successful placements | Staffing and Recruiting | 🇦🇺 Melbourne | 608 |  |
| 27 | [ADP Consulting](https://www.tamtam.ai/c/adp-consulting) (adpconsulting.com)<br>A sustainability-focused engineering consultancy pushing boundaries in design and innovation to deliver sustainable solutions for complex projects worldwide | Engineering Services | 🇦🇺 Melbourne | 572 | 2011 |
| 28 | [HOBAN Recruitment](https://www.tamtam.ai/c/hoban-recruitment) (hoban.com.au)<br>Leading recruitment agency providing diverse solutions across white-collar, industrial, and government sectors nationally, with a commitment to excellence, diversity, and inclusion | Staffing and Recruiting | 🇦🇺 Melbourne | 569 | 1965 |
| 29 | [Aussizz Group](https://www.tamtam.ai/c/aussizz-group) (aussizzgroup.com)<br>Migration and education excellence provider, offering visa services for Australia, New Zealand, and Canada with a global presence and commitment to exceptional service and support | Education | 🇦🇺 Melbourne | 556 | 2009 |
| 30 | [Versent](https://www.tamtam.ai/c/versent) (versent.com.au)<br>Australian technology company specializing in cloud native applications, data platforms, and services, with a customer-first approach and a focus on quality outcomes | IT Services and IT Consulting | 🇦🇺 Melbourne | 555 | 2014 |

## 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

- [Professional services firms in Australia](https://www.tamtam.ai/l/professional-services-firms-australia) (377)
- [Professional services firms in New South Wales](https://www.tamtam.ai/l/professional-services-firms-new-south-wales) (140)
- [Professional services firms in Victoria](https://www.tamtam.ai/l/professional-services-firms-victoria) (121)
- [Professional services firms in Queensland](https://www.tamtam.ai/l/professional-services-firms-queensland) (47)
- [Professional services firms in Western Australia](https://www.tamtam.ai/l/professional-services-firms-western-australia) (37)
- [Professional services firms in Sydney](https://www.tamtam.ai/l/professional-services-firms-sydney) (93)

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