Company lists · Data refreshed September 2026

Top 25 Engineering consultancy firms based in Australia

Name: Engineering consultancy firms based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 4,519 companies tracked

RevenueBase identified 4,519 engineering consultancy firms headquartered in Australia as of September 2026 and tracks 170,519 professional contacts across them, including 69,052 with verified work emails and 11,813 with mobile numbers. Sydney is the largest hub.

This list covers engineering consultancy firms headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

4,519Companies

170,519Contacts tracked

69,052Verified emails

11,813Mobile numbers

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The 25 largest engineering consultancy firms based in Australia

Ranked by team size

Top 25 of 4,519 engineering consultancy firms based in Australia, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to engineering consultancy firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Worley	Indirect evidence	Sydney, AustraliaHQ checked Sep 27, 2026	10001+	34,763 contacts →
	Indirect evidence “Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.” Source: RevenueBase Database · checked Sep 27, 2026
2	GHD	Indirect evidence	Sydney, AustraliaHQ checked Sep 27, 2026	10001+	14,572 contacts →
	Indirect evidence “We are committed to addressing the world’s biggest challenges in the areas of water, energy and communities.” Source: RevenueBase Database · checked Sep 27, 2026
3	Aurecon	Strong evidence	Docklands, AustraliaHQ checked Sep 27, 2026	5,001-10,000	8,433 contacts →
	Strong evidence “Aurecon is an Asia Pacific engineering consultancy that believes the world needs people who can engineer possibilities.” Source: RevenueBase Database · checked Sep 27, 2026
4	UGL	Partial evidence	North Sydney, AustraliaHQ checked Sep 27, 2026	5,001-10,000	5,965 contacts →
	Partial evidence “UGL is CIMIC Group's specialist end-to-end engineering, services and operations provider.” Source: RevenueBase Database · checked Sep 27, 2026
5	SMEC	Strong evidence	North Sydney, AustraliaHQ checked Sep 27, 2026	5,001-10,000	5,231 contacts →
	Strong evidence “SMEC is a global engineering, management and development consultancy with a 70-year history of delivering advanced solutions on a global scale across urban development…” Source: RevenueBase Database · checked Sep 27, 2026
6	Monadelphous	Partial evidence	Perth, AustraliaHQ checked Sep 27, 2026	5,001-10,000	4,996 contacts →
	Partial evidence “Monadelphous is a leading Australian ASX-200 engineering group providing construction, maintenance and industrial services to the resources, energy and infrastructure sectors.” Source: RevenueBase Database · checked Sep 27, 2026
7	Ausenco	Indirect evidence	South Brisbane, AustraliaHQ checked Sep 27, 2026	1,001-5,000	3,826 contacts →
	Indirect evidence “We transform complex challenges into sustainable solutions for the minerals & metals and industrial sectors worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
8	WSP In Australia	Partial evidence	Sydney, AustraliaHQ checked Sep 27, 2026	10001+	3,132 contacts →
	Partial evidence “We are one of the world’s leading professional services firms, uniting our engineering, advisory and science-based expertise to shape communities to advance humanity.” Source: RevenueBase Database · checked Sep 27, 2026
9	Lycopodium	Strong evidence	Perth, AustraliaHQ checked Sep 27, 2026	1,001-5,000	1,143 contacts →
	Strong evidence “Lycopodium is an Australian headquartered engineering and project management consultancy which provides a complete range of services for the evaluation, development…” Source: RevenueBase Database · checked Sep 27, 2026
10	Cardno	Indirect evidence	Fortitude Valley, AustraliaHQ checked Sep 27, 2026	1,001-5,000	985 contacts →
	Indirect evidence “Cardno is now officially Stantec.” Source: RevenueBase Database · checked Sep 27, 2026
11	Robert Bird Group	Strong evidence	Brisbane, AustraliaHQ checked Sep 27, 2026	501-1,000	872 contacts →
	Strong evidence “Robert Bird Group (RBG), member of the Surbana Jurong Group, is a specialist structural, civil and construction engineering consultancy with over 800 employees across 12 offices…” Source: RevenueBase Database · checked Sep 27, 2026
12	Primero	Partial evidence	Osborne Park, AustraliaHQ checked Sep 27, 2026	1,001-5,000	726 contacts →
	Partial evidence “Primero is a leading multidisciplinary engineering, procurement, and construction company specialising in delivering comprehensive, fully integrated solutions to the mining…” Source: RevenueBase Database · checked Sep 27, 2026
13	DT Infrastructure	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 27, 2026	1,001-5,000	699 contacts →
	Indirect evidence “DT Infrastructure is a fresh name in Australia’s construction industry.” Source: RevenueBase Database · checked Sep 27, 2026
14	Sinclair Knight Merz	Indirect evidence	St Leonards, AustraliaHQ checked Sep 27, 2026	5,001-10,000	612 contacts →
	Indirect evidence “Sinclair Knight Merz was acquired by Jacobs in 2013.” Source: RevenueBase Database · checked Sep 27, 2026
15	WGA Wallbridge Gilbert Aztec	Partial evidence	Adelaide, AustraliaHQ checked Sep 27, 2026	501-1,000	586 contacts →
	Partial evidence “We like to think of ourselves as one of the leading Engineering and Project Management companies across Australia and New Zealand.” Source: RevenueBase Database · checked Sep 27, 2026
16	Goodline	Partial evidence	Kawana Waters, AustraliaHQ checked Sep 27, 2026	501-1,000	570 contacts →
	Partial evidence “Goodline is an Australian owned and based company established in by John and Catherine Kennedy for the provision of engineering, construction and maintenance services nationwide…” Source: RevenueBase Database · checked Sep 27, 2026
17	NDY	Partial evidence	Melbourne, AustraliaHQ checked Sep 27, 2026	501-1,000	563 contacts →
	Partial evidence “We provide engineering and advisory services for buildings and public spaces.” Source: RevenueBase Database · checked Sep 27, 2026
18	Kpmg SGA	Partial evidence	Sydney, AustraliaHQ checked Sep 27, 2026	51-200	561 contacts →
	Partial evidence “Our chartered building surveying and environmental consultancy focuses on delivering high quality technical and commercial value to clients.” Source: RevenueBase Database · checked Sep 27, 2026
19	WT Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 27, 2026	201-500	544 contacts →
	Indirect evidence “At WT, we empower our clients to grow, inspiring confidence through independent advice and inventive thinking to create sustainable value across all aspects of the built…” Source: RevenueBase Database · checked Sep 27, 2026
20	Northrop Consulting Engineers	Partial evidence	Sydney, AustraliaHQ checked Sep 27, 2026	501-1,000	522 contacts →
	Partial evidence “We partner with builders, architects, project managers and developers to deliver pragmatic engineering solutions for the land and built environment.” Source: RevenueBase Database · checked Sep 27, 2026
21	Boom Logistics	Indirect evidence	Southbank, AustraliaHQ checked Sep 27, 2026	1,001-5,000	511 contacts →
	Indirect evidence “BOOM offers a complete project service across all sectors across Australia.” Source: RevenueBase Database · checked Sep 27, 2026
22	TTW	Partial evidence	North Sydney, AustraliaHQ checked Sep 27, 2026	501-1,000	472 contacts →
	Partial evidence “Great engineering starts with great people.” Source: RevenueBase Database · checked Sep 27, 2026
23	ADP Consulting	Strong evidence	Melbourne, AustraliaHQ checked Sep 27, 2026	201-500	468 contacts →
	Strong evidence “ADP Consulting, an Ayesa company, is a sustainability-led engineering consultancy on a quest to inspire a better world through influence and design.” Source: RevenueBase Database · checked Sep 27, 2026
24	FYFE	Partial evidence	Adelaide, AustraliaHQ checked Sep 27, 2026	501-1,000	468 contacts →
	Partial evidence “Fyfe is an Australian professional services firm that delivers value through integrated engineering, environmental, planning and surveying services.” Source: RevenueBase Database · checked Sep 27, 2026
25	Douglas Partners	Strong evidence	West Ryde, AustraliaHQ checked Sep 27, 2026	501-1,000	466 contacts →
	Strong evidence “Welcome to Douglas Partners Pty Ltd, a leading engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks and geophysics.” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: engineering consultancy firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names engineering consultancy firms.
Partial evidence: Its own public description names part of engineering consultancy firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering consultancy firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 4,519 engineering consultancy firms based in Australia

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Engineering consultancy firms based in Australia at a glance

As of Sep 27, 2026

40.5%Verified-email coverage

6.9%Mobile-number coverage

37.7Average contacts per company

1-10Median size (employees)

10.8%Largest-city concentration · Sydney

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

2,536

11-50

1,401

51-200

422

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 29.0d

40,3830–30

26,03131–60

2,07961–90

2090–180

539180+

Company record updated

Median 91.0d

00–30

10,78531–60

72,94461–90

77,45990–180

9,331180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among engineering consultancy firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “engineering consultancy firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names engineering consultancy firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among engineering consultancy firms, and records with no verified work email. Companies headquartered outside Australia are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 69,052 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Engineering consultancy firms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names engineering consultancy firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many engineering consultancy firms are there based in Australia?

RevenueBase identified 4,519 engineering consultancy firms headquartered in Australia as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Worley, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most engineering consultancy firms?

Sydney leads with 489 headquartered companies, followed by Melbourne (403) and Brisbane (304).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 69,052 verified decision-maker contacts tracked across these 4,519 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.