# Top 37 professional services firms in Western Australia

Tamtam tracks 37 professional services firms headquartered in Western Australia. This list ranks all of them by number of employees on LinkedIn, led by TSA Group - Australia, RSM Australia and MPI. Their median headcount is 384. Half of them were founded in 1998 or later. The most common headquarters are Perth (17), West Perth (6) and Osborne Park (2).

These are professional services firms in Western Australia, mostly mid-sized to large companies. Many of them operate in engineering, construction, and mining sectors. For instance, Lycopodium is an Australian engineering consultancy, Duratec specializes in steel and concrete protection, and Primero is a multidisciplinary engineering group for global resource projects. RSM Australia offers assurance, tax, and consulting services, while TSA Group specializes in CX consultancy.

The data shows a strong concentration of headquarters in Perth and its immediate suburbs like West Perth, Osborne Park, and Balcatta. This indicates a central hub for professional services within the region, particularly for companies supporting the prominent mining and construction industries.

🇦🇺 Western Australia · 37 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [TSA Group - Australia](https://www.tamtam.ai/c/tsa-group-australia) (tsagroup.com.au)<br>Specializing in CX consultancy and services, we revolutionize brand interactions with Australians through local expertise, advanced technology, and dedicated teams | Outsourcing and Offshoring Consulting | 🇦🇺 West Perth | 2,198 | 1997 |
| 2 | [RSM Australia](https://www.tamtam.ai/c/rsm-australia) (rsm.global)<br>A member of a global network providing assurance, tax, and consulting services with a client-centric approach and deep understanding of businesses | Accounting | 🇦🇺 Perth | 1,841 | 1922 |
| 3 | [MPI](https://www.tamtam.ai/c/mpi) (mpirecruitment.au)<br>Specialist mining industry recruiters matching the right candidates to mining jobs, providing resources, guidance, and client care beyond placement | Mining | 🇦🇺 West Perth | 1,301 | 1995 |
| 4 | [Lycopodium](https://www.tamtam.ai/c/lycopodium) (lycopodium.com)<br>Australian engineering consultancy specializing in project management across various industries, prioritizing client objectives, quality services, and growth through organic expansion and strategic acquisitions | Professional Services | 🇦🇺 Perth | 1,239 | 1992 |
| 5 | [Robert Bird Group](https://www.tamtam.ai/c/robert-bird-group) (robertbird.com)<br>Provides structural, civil, and construction engineering consultancy services, creating value for clients through innovative application of engineering science and planning for construction. | Construction | 🇦🇺 Brisbane | 912 | 1982 |
| 6 | [Duratec](https://www.tamtam.ai/c/duratec) (duratec.com.au)<br>Specializing in steel and concrete protection and remediation, offering cost-effective solutions to extend asset life through innovative programs and methodologies | Construction | 🇦🇺 Wangara | 873 |  |
| 7 | [Empired](https://www.tamtam.ai/c/empired) (empired.com)<br>The company provides IT services and solutions to improve productivity, empower staff, and automate business processes for organizations of all sizes and industries | IT Services and IT Consulting | 🇦🇺 Perth | 851 |  |
| 8 | [Calibre](https://www.tamtam.ai/c/calibre) (wsp.com)<br>A global engineering firm offering design, engineering, advisory, and environmental services with expertise in EPCM project delivery and major capital projects | Mining | 🇦🇺 Perth | 834 | 1993 |
| 9 | [Primero](https://www.tamtam.ai/c/primero) (primero.com.au)<br>A multidisciplinary engineering group specializing in design, construction, and operation of global resource projects, offering turnkey solutions, maintenance services, and BOO solutions | Mining | 🇦🇺 Osborne Park | 821 | 2011 |
| 10 | [Five Group Pty Ltd](https://www.tamtam.ai/c/five-group-pty-ltd) (thefivegroup.com.au)<br>A group of engineering, surveying, and architectural drafting companies operating in Australia and South East Asia with subsidiaries in various specialized areas | Construction | 🇦🇺 Balcatta | 642 |  |
| 11 | [RSC](https://www.tamtam.ai/c/rsc) (rscmme.com)<br>Global geological services company offering practical solutions from exploration to remediation, prioritizing client needs, team well-being, and integrity in all operations | Mining | 🇦🇺 Perth | 619 | 2008 |
| 12 | [MNG](https://www.tamtam.ai/c/mng) (linktr.ee)<br>Specializing in providing survey and spatial information services to land development and resources & infrastructure sectors, with award-winning projects across Australia | Surveying and Mapping Services | 🇦🇺 Murdoch | 599 | 1989 |
| 13 | [Land Surveys](https://www.tamtam.ai/c/land-surveys) (landsurveys.net.au)<br>A leading survey company providing comprehensive services across Australia and internationally, utilizing the latest technology to achieve high quality results | Surveying and Mapping Services | 🇦🇺 Belmont | 594 | 1997 |
| 14 | [Powertech](https://www.tamtam.ai/c/powertech) (powertech.com.au)<br>Engineering and technical services specializing in electrical solutions for mining, oil and gas, renewables, infrastructure, and defense projects Rental and maintenance of testing equipment available | Engineering Services | 🇦🇺 Malaga | 588 | 1998 |
| 15 | [Veris](https://www.tamtam.ai/c/veris) (veris.com.au)<br>Leading provider of spatial data services in Australia for private and public sectors, delivering innovative solutions through a highly-skilled team | Professional Services | 🇦🇺 Perth | 533 | 2006 |
| 16 | [Mediserve Nursing Agency](https://www.tamtam.ai/c/mediserve-nursing-agency) (mediserve.com.au)<br>Specializing in placing Nurses and Carers nationwide, providing high-quality service and support, including assistance with transport, accommodation, and charity work | Staffing and Recruiting | 🇦🇺 Perth | 462 | 1998 |
| 17 | [GR Engineering Services Ltd](https://www.tamtam.ai/c/gr-engineering-services-ltd) (gres.com.au)<br>An engineering, consulting, and contracting company specializing in fixed-price design and construction services for the resources and mineral processing industries, both locally and internationally | Mining | 🇦🇺 Ascot | 447 | 2006 |
| 18 | [HAC](https://www.tamtam.ai/c/hac) (hacaustralia.com)<br>Specialist consulting firm providing strategic advice in energy and climate change, assisting clients with compliance, emissions abatement, and preparing for future challenges | Renewables & Environment | 🇦🇺 Perth | 396 | 2007 |
| 19 | [Chamber of Commerce and Industry WA](https://www.tamtam.ai/c/chamber-of-commerce-and-industry-wa) (cciwa.com)<br>A business peak body in WA for over 125 years, supporting and connecting businesses to create a world-leading place for living and working | Non-profit Organizations | 🇦🇺 Perth | 384 | 1890 |
| 20 | [Konekt](https://www.tamtam.ai/c/konekt) (konekt.com.au)<br>A leading workplace injury management and health solutions provider in Australia, helping organizations maximize productivity, reduce costs, and ensure safer workplaces | Vocational Rehabilitation Services | 🇦🇺 West Perth | 372 | 1992 |
| 21 | [APM Employment Services](https://www.tamtam.ai/c/apm-employment-services) (apm.net.au)<br>The company offers recruitment services to help businesses find qualified, job-ready candidates quickly and at no cost, with ongoing support | Staffing and Recruiting | 🇦🇺 West Perth | 362 | 1994 |
| 22 | [Agilitus](https://www.tamtam.ai/c/agilitus) (linktr.ee)<br>An employee-owned company providing engineering, design, project delivery, and advisory services to clients in the Resources, Energy, and Industrial sectors | Engineering Services | 🇦🇺 Perth | 346 | 2017 |
| 23 | [Legal Aid WA](https://www.tamtam.ai/c/legal-aid-wa) (legalaid.wa.gov.au)<br>A leading provider of legal aid services in Western Australia, offering a team of around 300 lawyers and support staff across 9 offices | Legal Services | 🇦🇺 Perth | 325 |  |
| 24 | [CMW Geosciences](https://www.tamtam.ai/c/cmw-geosciences) (cmwgeosciences.com)<br>Specialist geotechnical consultancy delivering top-notch engineering services in Australia and New Zealand across Infrastructure, Energy & Resources, and Land & Buildings sectors | Civil Engineering | 🇦🇺 Perth | 324 | 2012 |
| 25 | [Techforce Personnel Pty Ltd](https://www.tamtam.ai/c/techforce-personnel-pty-ltd) (techforce.com.au)<br>This Australian recruitment group with over 25 years of experience provides qualified blue and white collar staff across various industries nationwide | Staffing and Recruiting | 🇦🇺 Perth | 302 |  |
| 26 | [PARC Engineering Pty Ltd](https://www.tamtam.ai/c/parc-engineering-pty-ltd) (parcengineering.com.au)<br>Provides comprehensive engineering and project management solutions to clients in Australian resources, energy, and infrastructure sectors, including civil, mechanical, electrical, and inspection services. | Construction | 🇦🇺 Applecross | 188 | 2018 |
| 27 | [Knight](https://www.tamtam.ai/c/knight) (knightgroup.com.au)<br>Helping clients achieve financial success through skilled guidance and advice for individuals, families, businesses, and companies at all stages of life | Financial Services | 🇦🇺 Subiaco | 181 | 1971 |
| 28 | [AustAsia Group](https://www.tamtam.ai/c/austasia-group) (austasiagroup.com)<br>A diversified financial services group offering real estate, business broking, financial planning, accounting, legal, and consulting services with a client-focused approach | Financial Services | 🇦🇺 West Perth | 76 | 1979 |
| 29 | [SPIE Global Services Energy, Australia](https://www.tamtam.ai/c/spie-global-services-energy-australia) (spiegse.com)<br>Providing electrical, instrument, and control engineering services including construction, commissioning, maintenance, and lifecycle inspections for industrial projects. | Engineering Services | 🇦🇺 Perth | 63 | 2002 |
| 30 | [Wealthwise Financial Planning](https://www.tamtam.ai/c/wealthwise-financial-planning-osborne-park) (wealthwise.com.au)<br>The company helps clients achieve financial independence and desired lifestyle through expertise gained since 1986 | Financial Services | 🇦🇺 Osborne Park | 36 | 1986 |
| 31 | [Labrador](https://www.tamtam.ai/c/labrador) (lpm.com.au)<br>A well management company providing client-focused solutions in the oil, gas, and energy sectors, offering drilling & completions consulting, project management, and personnel services | Oil and Gas | 🇦🇺 Perth | 24 | 1987 |
| 32 | [Astron Environmental Services](https://www.tamtam.ai/c/astron-environmental-services) (ecocene.com)<br>An established environmental consultancy specializing in a wide range of services including surveys, monitoring, remote sensing, data science, and rehabilitation | Environmental Services | 🇦🇺 East Perth | 24 | 1985 |
| 33 | [INHERENT](https://www.tamtam.ai/c/inherent) (inherent.com.au)<br>Inherent specializes in risk and safety management, providing efficient and effective solutions to help clients with compliance, documentation, and risk assessments | Oil and Gas | 🇦🇺 Victoria Park | 8 | 2011 |
| 34 | [AXB Asset Management Consulting](https://www.tamtam.ai/c/axb-asset-management-consulting) (axbconsulting.com.au)<br>Perth-based asset management consulting firm specializing in water, utilities, and resources industries to help asset managers make informed investment decisions | Business Consulting and Services | 🇦🇺 Scarborough | 7 | 2017 |
| 35 | [Miatke Consulting](https://www.tamtam.ai/c/miatke-consulting) (marciamiatke.com)<br>This company empowers leaders to reach higher levels of success through tailored training, coaching, and consulting services focused on peak performance and emotional intelligence | Business Consulting and Services | 🇦🇺 Perth | 2 | 2017 |
| 36 | [Aro Capital](https://www.tamtam.ai/c/aro-capital) (arocapital.com.au)<br>Investment advisory firm providing strategic advice, asset management for private clients and family offices, along with corporate advisory services and capital raising | Financial Services | 🇦🇺 West Perth | 2 | 2016 |
| 37 | [Remote Business Partner](https://www.tamtam.ai/c/remote-business-partner) (remotebusinesspartner.com.au)<br>Passionate about providing eco-friendly coffee options, we offer pesticide-free, locally hand-picked and roasted beans for a fresh Colombian coffee experience | Business Consulting and Services | 🇦🇺 Perth | 2 | 2025 |

## 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 12, 2026.

## More company lists in Western Australia

- [The largest companies in Western Australia](https://www.tamtam.ai/l/largest-companies-western-australia) (475)
- [Mining companies in Western Australia](https://www.tamtam.ai/l/mining-companies-western-australia) (80)
- [Multinational companies in Western Australia](https://www.tamtam.ai/l/multinational-companies-western-australia) (75)
- [Government Administration companies in Western Australia](https://www.tamtam.ai/l/government-administration-companies-western-australia) (46)
- [Publicly traded companies in Western Australia](https://www.tamtam.ai/l/publicly-traded-companies-western-australia) (45)
- [Critical infrastructure operators in Western Australia](https://www.tamtam.ai/l/critical-infrastructure-operators-western-australia) (42)
- [Healthcare providers in Western Australia](https://www.tamtam.ai/l/healthcare-providers-western-australia) (37)
- [Public sector organisations in Western Australia](https://www.tamtam.ai/l/public-sector-organisations-western-australia) (37)
- [Education providers in Western Australia](https://www.tamtam.ai/l/education-companies-western-australia) (34)
- [Hospitals and Health Care companies in Western Australia](https://www.tamtam.ai/l/hospitals-and-health-care-companies-western-australia) (31)
- [Companies with in-house R&D in Western Australia](https://www.tamtam.ai/l/r-and-d-companies-western-australia) (30)
- [Construction companies in Western Australia](https://www.tamtam.ai/l/construction-companies-western-australia) (29)
- [Corporate groups and holding companies in Western Australia](https://www.tamtam.ai/l/holding-companies-western-australia) (29)
- [Manufacturers in Western Australia](https://www.tamtam.ai/l/manufacturers-western-australia) (26)
- [Retail chains in Western Australia](https://www.tamtam.ai/l/retail-chains-western-australia) (25)

## 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 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)

## The same list elsewhere

- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)

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