# The 50 largest professional services firms in Victoria

Tamtam tracks 121 professional services firms headquartered in Victoria. This list ranks the 50 largest by number of employees on LinkedIn, led by SEO, Aurecon and Rider Levett Bucknall RLB. Their median headcount is 791. Half of them were founded in 1991 or later. The most common headquarters are Melbourne (35), Docklands (3) and South Melbourne (2).

These professional services firms in Victoria include a mix of large established companies and some founded in the 2000s, primarily concentrated in Melbourne and its surrounding suburbs. They span diverse sectors, from digital marketing and engineering to legal and financial services, reflecting a broad professional landscape.

Key companies include SEO, a digital marketing agency; Aurecon, an engineering and advisory firm; X-Team, providing remote developers; and Accenture Australia, a global professional services company. Other notable firms are Findex, offering financial advisory services, and Slater and Gordon Lawyers, a consumer law firm. A common pattern observed is the strong presence of companies founded before 2000, indicating a mature professional services market.

🇦🇺 Victoria · 50 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 | [Aurecon](https://www.tamtam.ai/c/aurecon) (aurecongroup.com)<br>Design, engineering, and advisory company focusing on creating a better future through innovative solutions across various markets and asset types | Engineering Services | 🇦🇺 Docklands | 8,800 | 2009 |
| 3 | [Rider Levett Bucknall RLB](https://www.tamtam.ai/c/rider-levett-bucknall-rlb) (rlb.com)<br>Specialists in cost management, quantity surveying, project management, and sustainability services for landmark and ambitious construction projects worldwide. | Construction | 🇦🇺 | 3,622 |  |
| 4 | [X-Team](https://www.tamtam.ai/c/x-team) (x-team.com)<br>Providing vetted, high-performing remote developers to integrate seamlessly with existing teams, enhancing engineering capabilities across diverse industries. | Staffing and Recruiting | 🇦🇺 Chelsea | 2,737 | 2006 |
| 5 | [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 |  |
| 6 | [Accenture Australia](https://www.tamtam.ai/c/accenture-australia) (accenture.com)<br>Global professional services company focused on digital transformation, operations optimization, revenue growth, and citizen services with a strong technology-driven approach | IT Services and IT Consulting | 🇦🇺 Melbourne VIC | 2,305 | 1989 |
| 7 | [ANZUK Education Australia](https://www.tamtam.ai/c/anzuk-education-australia) (anzuk.education)<br>A leading education recruitment agency placing educators and support staff in schools and early childhood settings, focusing on making a difference every day | Education Administration Programs | 🇦🇺 Collingwood | 2,210 | 2004 |
| 8 | [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 |
| 9 | [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 |  |
| 10 | [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 |
| 11 | [Pitcher Partners](https://www.tamtam.ai/c/pitcher-partners) (pitcher.com.au)<br>Accounting, audit, and advisory services focused on middle market businesses, family-owned firms, high net-worth individuals, and public sector clients. | Accounting | 🇦🇺 Docklands | 1,546 | 1991 |
| 12 | [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 |
| 13 | [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 |
| 14 | [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 |
| 15 | [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 |
| 16 | [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 |
| 17 | [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 |
| 18 | [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 |
| 19 | [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 |
| 20 | [Attra, a Synechron Company](https://www.tamtam.ai/c/attra-a-synechron-company) (synechron.com)<br>A global technology services provider specializing in payments with over 25 years of experience, offering consulting, application management, and quality engineering services | IT Services and IT Consulting | 🇦🇺 Box Hill | 984 | 1995 |
| 21 | [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 |
| 22 | [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 |  |
| 23 | [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 |
| 24 | [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 |  |
| 25 | [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 |
| 26 | [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 |  |
| 27 | [EY Analytics (Asia-Pacific)](https://www.tamtam.ai/c/ey-analytics-asia-pacific) (ey.com)<br>Specializing in data and advanced analytics, we help organizations implement strategies to optimize growth, protect assets, and improve business outcomes | IT Services and IT Consulting | 🇦🇺 Melbourne | 780 | 2006 |
| 28 | [Oncall](https://www.tamtam.ai/c/oncall) (oncallservices.com)<br>A global leader in interpreting and translation services, offering solutions in over 230 languages with a focus on quality and client satisfaction | Translation and Localization | 🇦🇺 South Melbourne | 758 | 1984 |
| 29 | [Moray & Agnew](https://www.tamtam.ai/c/moray-and-agnew) (moray.com.au)<br>national law firm specializing in insurance, commercial disputes, construction, corporate, property, and workplace legal services across multiple Australian cities | Law Practice | 🇦🇺 | 755 |  |
| 30 | [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 |
| 31 | [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 |  |
| 32 | [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 |
| 33 | [McArthur](https://www.tamtam.ai/c/mcarthur) (mcarthur.com.au)<br>A well-established Australian recruitment and HR specialist offering staffing solutions in various sectors, with a focus on the care economy Talent Architects division offers HR consultancy services | Staffing and Recruiting | 🇦🇺 Burnley | 658 | 1969 |
| 34 | [Nous Group](https://www.tamtam.ai/c/nous-group-docklands) (nousgroup.com)<br>International management consultancy specializing in strategy, performance, leadership, transformation, economics, public policy, data analytics, digital, and design to help clients achieve success | Business Consulting and Services | 🇦🇺 Docklands | 656 | 1999 |
| 35 | [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 |
| 36 | [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 |  |
| 37 | [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 |
| 38 | [GrowthOps](https://www.tamtam.ai/c/growthops) (growthops.com.au)<br>A growth services partner offering a fusion of marketing, technology, and people disciplines to help large organizations acquire customers, launch products, and scale operations | Marketing Services | 🇦🇺 South Melbourne | 610 |  |
| 39 | [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 |  |
| 40 | [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 |
| 41 | [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 |
| 42 | [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 |
| 43 | [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 |
| 44 | [PPT](https://www.tamtam.ai/c/ppt) (ppt.com.au)<br>Experienced accounting and financial planning firm in Ballarat, providing expert advice and support for business, family, and individual financial affairs with a friendly service | Accounting | 🇦🇺 Ballarat | 554 | 1967 |
| 45 | [Assai](https://www.tamtam.ai/c/assai) (assai.com.au)<br>Assai specializes in building stronger communities and organizations through evaluation, social infrastructure, research, and art training projects in Asia-Pacific | International Trade and Development | 🇦🇺 Melbourne | 549 | 1985 |
| 46 | [Mercer Pacific](https://www.tamtam.ai/c/mercer-pacific) (mercer.com.au)<br>Consulting firm specializing in work transformation, retirement planning, investment strategies, and health and well-being solutions across global markets. | Professional Services | 🇦🇺 Melbourne | 534 |  |
| 47 | [IPAR](https://www.tamtam.ai/c/ipar) (ipar.com.au)<br>A leading national provider in Australia offering injury prevention, management, and return to work services for insurers and companies Staffed by highly skilled healthcare professionals | Wellness and Fitness Services | 🇦🇺 Melbourne | 533 | 2003 |
| 48 | [Holding Redlich](https://www.tamtam.ai/c/holding-redlich) (holdingredlich.com)<br>Providing tailored legal services across Australia with expert knowledge, strong networks, and a commitment to client success and collaboration. | Law Practice | 🇦🇺 Melbourne | 530 | 1962 |
| 49 | [Spark Event Group](https://www.tamtam.ai/c/spark-event-group) (sparkeventgroup.com)<br>A leading event management group providing end-to-end solutions for event owners and operators, offering workforce solutions, logistics, and specialized training opportunities | Events Services | 🇦🇺 Southbank | 503 | 2020 |
| 50 | [Offshore Business Processing](https://www.tamtam.ai/c/offshore-business-processing) (offshorebusinessprocessing.com)<br>An independent firm offering business process outsourcing services, helping companies relocate office jobs offshore in various industries to save on costs and remain competitive | Outsourcing and Offshoring Consulting | 🇦🇺 Melbourne | 502 | 2012 |

## 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 Victoria

- [The largest companies in Victoria](https://www.tamtam.ai/l/largest-companies-victoria) (1,682)
- [Multinational companies in Victoria](https://www.tamtam.ai/l/multinational-companies-victoria) (378)
- [Retail chains in Victoria](https://www.tamtam.ai/l/retail-chains-victoria) (202)
- [Education providers in Victoria](https://www.tamtam.ai/l/education-companies-victoria) (128)
- [Financial services firms in Victoria](https://www.tamtam.ai/l/financial-services-firms-victoria) (128)
- [Critical infrastructure operators in Victoria](https://www.tamtam.ai/l/critical-infrastructure-operators-victoria) (123)
- [Healthcare providers in Victoria](https://www.tamtam.ai/l/healthcare-providers-victoria) (116)
- [Financial Services companies in Victoria](https://www.tamtam.ai/l/financial-services-companies-victoria) (109)
- [Companies with a mobile app in Victoria](https://www.tamtam.ai/l/companies-with-mobile-app-victoria) (99)
- [Manufacturers in Victoria](https://www.tamtam.ai/l/manufacturers-victoria) (99)
- [E-commerce companies in Victoria](https://www.tamtam.ai/l/ecommerce-companies-victoria) (98)
- [Public sector organisations in Victoria](https://www.tamtam.ai/l/public-sector-organisations-victoria) (97)
- [Retail companies in Victoria](https://www.tamtam.ai/l/retail-companies-victoria) (96)
- [Corporate groups and holding companies in Victoria](https://www.tamtam.ai/l/holding-companies-victoria) (89)
- [Publicly traded companies in Victoria](https://www.tamtam.ai/l/publicly-traded-companies-victoria) (89)
- [Hospitals and Health Care companies in Victoria](https://www.tamtam.ai/l/hospitals-and-health-care-companies-victoria) (87)
- [Government Administration companies in Victoria](https://www.tamtam.ai/l/government-administration-companies-victoria) (81)
- [IT Services and IT Consulting companies in Victoria](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-victoria) (76)
- [Companies with in-house R&D in Victoria](https://www.tamtam.ai/l/r-and-d-companies-victoria) (75)
- [Consulting firms in Victoria](https://www.tamtam.ai/l/consulting-firms-victoria) (69)
- [Subscription businesses in Victoria](https://www.tamtam.ai/l/subscription-businesses-victoria) (58)
- [Education Administration Programs companies in Victoria](https://www.tamtam.ai/l/education-administration-programs-companies-victoria) (56)
- [Non-profit Organizations companies in Victoria](https://www.tamtam.ai/l/non-profit-organizations-companies-victoria) (56)
- [SaaS companies in Victoria](https://www.tamtam.ai/l/saas-companies-victoria) (54)

## 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 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)
- [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-victoria