These civil engineering companies in Australia are primarily large and mid-sized firms, many with a long operational history. They offer a range of services from comprehensive infrastructure development to specialized geotechnical and environmental consulting.
Key players include GHD, a global network providing integrated solutions in water, energy, and communities; Service Stream, which offers end-to-end asset life-cycle services in telecommunications, utilities, and transport; WBHO Infrastructure, an international specialist in engineering-led asset maintenance and infrastructure solutions; and Seymour Whyte, a civil contractor delivering major infrastructure projects. A notable pattern is the concentration of headquarters in Sydney and its surrounding areas, indicating a regional hub for the civil engineering sector.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 17,363 | ||||
| 2 |
Service Streamservicestream.com.au
Service Stream provides end-to-end asset life-cycle services in telecommunications, utilities, and transport sectors, with a team of 5000+ employees and skilled contractors |
2,403 | |||
| 3 |
WBHO Infrastructurewbho.com.au
An international specialist group focused on engineering-led asset maintenance, mining services, and infrastructure solutions |
1,126 | |||
| 4 |
Seymour Whyteseymourwhyte.com.au
A multi award-winning civil contractor delivering major infrastructure projects across Australia, known for exceptional service, skilled employees, and innovative solutions |
928 | |||
| 5 |
Abergeldie Complex Infrastructureabergeldie.com
A contractor with 25 years experience in Australia and New Zealand, specializing in water, bridges, transport, energy, and remediation projects for better communities |
582 | |||
| 6 |
PSMpsm.com.au
Specializing in engineering services for rock, soil, and water, the company brings together experienced professionals in geology, mining, and hydrology |
539 | |||
| 7 |
Douglas Partnersdouglaspartners.com.au
Engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks, and geophysics with extensive experience and quality assurance. |
483 | |||
| 8 |
CIMIC Groupcimic.com.au
Engineering-led construction, mining, services, and infrastructure development across asset lifecycles, supported by specialized subsidiaries and a strong safety focus. |
432 | |||
| 9 |
Sinclair Knight Merzjacobs.com
A globally-recognized projects firm specialized in strategic consulting, engineering, and project delivery was acquired by Jacobs in 2013 |
422 | |||
| 10 |
Daracon Groupdaracon.com.au
Specializing in construction services, our company has a strong reputation for quality work in road, rail, concrete structures, landscaping, quarrying, plant hire, and mining |
363 | |||
| 11 |
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 | |||
| 12 |
pitt&sherrypittsh.com.au
Engineering and environmental consultancy providing project lifecycle services including planning, design, asset management, and decommissioning for various industry sectors. |
323 | |||
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. | |||||
| 13 |
Freyssinet Australiafreyssinet.com.au
A multifaceted contractor specializing in civil engineering, building post-tensioning, and structure remediation, providing innovative solutions for various construction projects worldwide |
237 | |||
| 14 |
CMCcmc.net.au
A privately owned contractor in civil infrastructure and mining, specializing in self-performed projects with a focus on safety, quality, and client collaboration |
236 | |||
| 15 |
Civilmart Roclarocla.com.au
Leading supplier of pipe, precast, and water quality products for infrastructure projects, focusing on strong relationships, development opportunities, and career support for employees |
170 | |||
| 16 |
FSCfscgroup.com.au
Employee-owned company specializing in engineering, project management, and environmental consulting for transport infrastructure planning, design, delivery, and asset management. |
169 | |||
| 17 |
Avopiling Foundation Specialistsavopiling.com.au
A leading Australian Ground Engineering and Foundation Services company offering innovative and economical solutions for piling, drilling, and ground improvement works nationwide |
164 | |||
| 18 |
Water Resourceswaterresources.com.au
Specialist consultancy offering strategy, planning, advisory services, and engineering solutions within the water resources sector |
160 | |||
| 19 |
Bielby Holdingsbielby.com.au
Queensland-based civil engineering provider with 37 years of success, offering earthworks and infrastructure services across Australia with a focus on collaboration and client value |
159 | |||
| 20 |
Atlan Stormwateratlanstormwater.com
A global leader with over 45 years of experience in designing, manufacturing, and testing water treatment solutions for various industries worldwide |
149 | |||
| 21 |
TCD Grouptcdgroup.com.au
A Multi-Disciplinary Contractor offering a 'One Stop Service' for Earthworks, Roadworks, Concrete Construction, and more in Western Australia |
147 | |||
| 22 |
Rob Carr Pty Ltdrobcarr.com.au
Specialist in microtunnelling, deep shaft construction, and complex underground service installations for water, energy, and power sectors globally. |
112 | |||
| 23 |
CATCONcatcon.com.au
CATCON is a leading civil engineering construction company in Australia, specializing in power, mining, water, and general infrastructure projects with national and international clients |
93 | |||
| 24 |
Menard Oceaniamenardoceania.com.au
A design and construct specialist geotechnical contractor offering ground improvement solutions for construction projects on challenging sites |
79 | |||
| 25 |
GM Pilinggmpiling.co.uk
Innovative piling contractor in the UK with over 30 years of experience offering a range of piling techniques, foundation solutions, and ground remediation services |
27 | |||
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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 13, 2026.
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