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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
TSA Group - Australiatsagroup.com.au
Specializing in CX consultancy and services, we revolutionize brand interactions with Australians through local expertise, advanced technology, and dedicated teams |
2,198 | |||
| 2 |
RSM Australiarsm.global
A member of a global network providing assurance, tax, and consulting services with a client-centric approach and deep understanding of businesses |
1,841 | |||
| 3 |
MPImpirecruitment.au
Specialist mining industry recruiters matching the right candidates to mining jobs, providing resources, guidance, and client care beyond placement |
1,301 | |||
| 4 |
Lycopodiumlycopodium.com
Australian engineering consultancy specializing in project management across various industries, prioritizing client objectives, quality services, and growth through organic expansion and strategic acquisitions |
1,239 | |||
| 5 |
Robert Bird Grouprobertbird.com
Provides structural, civil, and construction engineering consultancy services, creating value for clients through innovative application of engineering science and planning for construction. |
912 | |||
| 6 |
Duratecduratec.com.au
Specializing in steel and concrete protection and remediation, offering cost-effective solutions to extend asset life through innovative programs and methodologies |
873 | |||
| 7 |
Empiredempired.com
The company provides IT services and solutions to improve productivity, empower staff, and automate business processes for organizations of all sizes and industries |
851 | |||
| 8 | 834 | ||||
| 9 |
Primeroprimero.com.au
A multidisciplinary engineering group specializing in design, construction, and operation of global resource projects, offering turnkey solutions, maintenance services, and BOO solutions |
821 | |||
| 10 |
Five Group Pty Ltdthefivegroup.com.au
A group of engineering, surveying, and architectural drafting companies operating in Australia and South East Asia with subsidiaries in various specialized areas |
642 | |||
| 11 |
RSCrscmme.com
Global geological services company offering practical solutions from exploration to remediation, prioritizing client needs, team well-being, and integrity in all operations |
619 | |||
| 12 | 599 | ||||
| 13 |
Land Surveyslandsurveys.net.au
A leading survey company providing comprehensive services across Australia and internationally, utilizing the latest technology to achieve high quality results |
594 | |||
| 14 |
Powertechpowertech.com.au
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 |
588 | |||
| 15 |
Verisveris.com.au
Leading provider of spatial data services in Australia for private and public sectors, delivering innovative solutions through a highly-skilled team |
533 | |||
| 16 |
Mediserve Nursing Agencymediserve.com.au
Specializing in placing Nurses and Carers nationwide, providing high-quality service and support, including assistance with transport, accommodation, and charity work |
462 | |||
| 17 |
GR Engineering Services Ltdgres.com.au
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 |
447 | |||
| 18 |
HAChacaustralia.com
Specialist consulting firm providing strategic advice in energy and climate change, assisting clients with compliance, emissions abatement, and preparing for future challenges |
396 | |||
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. | |||||
| 19 |
Chamber of Commerce and Industry WAcciwa.com
A business peak body in WA for over 125 years, supporting and connecting businesses to create a world-leading place for living and working |
384 | |||
| 20 |
Konektkonekt.com.au
A leading workplace injury management and health solutions provider in Australia, helping organizations maximize productivity, reduce costs, and ensure safer workplaces |
372 | |||
| 21 |
APM Employment Servicesapm.net.au
The company offers recruitment services to help businesses find qualified, job-ready candidates quickly and at no cost, with ongoing support |
362 | |||
| 22 | 346 | ||||
| 23 |
Legal Aid WAlegalaid.wa.gov.au
A leading provider of legal aid services in Western Australia, offering a team of around 300 lawyers and support staff across 9 offices |
325 | |||
| 24 |
CMW Geosciencescmwgeosciences.com
Specialist geotechnical consultancy delivering top-notch engineering services in Australia and New Zealand across Infrastructure, Energy & Resources, and Land & Buildings sectors |
324 | |||
| 25 |
Techforce Personnel Pty Ltdtechforce.com.au
This Australian recruitment group with over 25 years of experience provides qualified blue and white collar staff across various industries nationwide |
302 | |||
| 26 |
PARC Engineering Pty Ltdparcengineering.com.au
Provides comprehensive engineering and project management solutions to clients in Australian resources, energy, and infrastructure sectors, including civil, mechanical, electrical, and inspection services. |
188 | |||
| 27 |
Knightknightgroup.com.au
Helping clients achieve financial success through skilled guidance and advice for individuals, families, businesses, and companies at all stages of life |
181 | |||
| 28 |
AustAsia Groupaustasiagroup.com
A diversified financial services group offering real estate, business broking, financial planning, accounting, legal, and consulting services with a client-focused approach |
76 | |||
| 29 |
SPIE Global Services Energy, Australiaspiegse.com
Providing electrical, instrument, and control engineering services including construction, commissioning, maintenance, and lifecycle inspections for industrial projects. |
63 | |||
| 30 |
Wealthwise Financial Planningwealthwise.com.au
The company helps clients achieve financial independence and desired lifestyle through expertise gained since 1986 |
36 | |||
| 31 |
Labradorlpm.com.au
A well management company providing client-focused solutions in the oil, gas, and energy sectors, offering drilling & completions consulting, project management, and personnel services |
24 | |||
| 32 |
Astron Environmental Servicesecocene.com
An established environmental consultancy specializing in a wide range of services including surveys, monitoring, remote sensing, data science, and rehabilitation |
24 | |||
| 33 |
INHERENTinherent.com.au
Inherent specializes in risk and safety management, providing efficient and effective solutions to help clients with compliance, documentation, and risk assessments |
8 | |||
| 34 |
AXB Asset Management Consultingaxbconsulting.com.au
Perth-based asset management consulting firm specializing in water, utilities, and resources industries to help asset managers make informed investment decisions |
7 | |||
| 35 |
Miatke Consultingmarciamiatke.com
This company empowers leaders to reach higher levels of success through tailored training, coaching, and consulting services focused on peak performance and emotional intelligence |
2 | |||
| 36 |
Aro Capitalarocapital.com.au
Investment advisory firm providing strategic advice, asset management for private clients and family offices, along with corporate advisory services and capital raising |
2 | |||
| 37 |
Remote Business Partnerremotebusinesspartner.com.au
Passionate about providing eco-friendly coffee options, we offer pesticide-free, locally hand-picked and roasted beans for a fresh Colombian coffee experience |
2 | |||
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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 475
- Mining companies in Western Australia 80
- Multinational companies in Western Australia 75
- Government Administration companies in Western Australia 46
- Publicly traded companies in Western Australia 45
- Critical infrastructure operators in Western Australia 42
- Healthcare providers in Western Australia 37
- Public sector organisations in Western Australia 37
- Education providers in Western Australia 34
- Hospitals and Health Care companies in Western Australia 31
- Companies with in-house R&D in Western Australia 30
- Construction companies in Western Australia 29
- Corporate groups and holding companies in Western Australia 29
- Manufacturers in Western Australia 26
- Retail chains in Western Australia 25
The same list elsewhere in Australia
- Professional services firms in Australia 377
- Professional services firms in New South Wales 140
- Professional services firms in Victoria 121
- Professional services firms in Queensland 47
- Professional services firms in Sydney 93
- Professional services firms in Melbourne 76