Company lists · Data refreshed September 2026

Top 25 Engineering companies based in Sydney, Australia

Name: Engineering companies based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 434 companies tracked

This directory lists 434 engineering companies based in Sydney, Australia, with 9,897 contacts and 4,822 email addresses. The list includes companies across engineering disciplines. Use it to identify potential suppliers, partners, and sales prospects as of September 2026. Across Australia, Sydney is the largest hub for this category.

Engineering companies apply scientific, mathematical, and technical principles to design, develop, test, and manage products, systems, structures, or industrial processes. This list covers companies that provide engineering design, consulting, testing, project management, or related technical services. Ranked by team size, largest first. Data current as of September 6, 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 6, 2026 86% judged on-target in blind review

434Companies

9,897Contacts tracked

4,822Verified emails

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The 25 largest engineering companies based in Sydney, Australia

Ranked by team size

Top 25 of 434 engineering companies based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to engineering companies: 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	WSP In Australia	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	10001+	3,132 contacts →
	Strong 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 6, 2026
2	Northrop Consulting Engineers	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	501-1,000	522 contacts →
	Strong 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 6, 2026
3	Jord International	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	201-500	426 contacts →
	Strong evidence “Jord International is a global leader in process engineering, designing, manufacturing, commissioning, and servicing bespoke plant and systems for a wide range of industries in…” Source: RevenueBase Database · checked Sep 6, 2026
4	Acor Consultants	Indirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	501-1,000	423 contacts →
	Indirect evidence “Founded in 1997, ACOR Consultants began as a group of engineers with a unique set of personal and professional values providing specialist consulting services.” Source: RevenueBase Database · checked Sep 6, 2026
5	Woolpert Asia-Pacific	Indirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	1,001-5,000	291 contacts →
	Indirect evidence “Woolpert Asia-Pacific embodies all that is Woolpert, with an added focus on this region of the world.” Source: RevenueBase Database · checked Sep 6, 2026
6	JMDR	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	201-500	240 contacts →
	Strong evidence “JMDR - A Rail Engineering Company providing total solution for "signalling and systems” works including management, design, construction, product assembly, wiring, testing &…” Source: RevenueBase Database · checked Sep 6, 2026
7	SJA	Indirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	145 contacts →
	Indirect evidence “SJA Construction Services is a specialist consultancy firm providing independent expert, advisory and technical services to the construction and infrastructure industry across…” Source: RevenueBase Database · checked Sep 6, 2026
8	Marr Contracting	Indirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	100 contacts →
	Indirect evidence “Marr Contracting are world leaders in the design and delivery of heavy-lift luffing tower crane solutions.” Source: RevenueBase Database · checked Sep 6, 2026
9	Rocktown PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	201-500	97 contacts →
	Strong evidence “Rocktown are a leading player in the civil engineering industry throughout Australia, specialising in reinforced concrete structures.” Source: RevenueBase Database · checked Sep 6, 2026
10	E-Lab Consulting	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	84 contacts →
	Strong evidence “Where Engineering & Science Inspire Design.” Source: RevenueBase Database · checked Sep 6, 2026
11	Chess Engineering PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	201-500	82 contacts →
	Strong evidence “Chess Engineering Pty Ltd is recognised as one of the leading Australian engineering companies, headquartered in Sydney and commenced its operation in 1967.” Source: RevenueBase Database · checked Sep 6, 2026
12	Turnbull Engineering	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	73 contacts →
	Strong evidence “Turnbull is a select team of highly motivated engineering professionals specialising in the design of civil infrastructure, including transport, energy and water and mining assets.” Source: RevenueBase Database · checked Sep 6, 2026
13	Chalouhi	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	67 contacts →
	Strong evidence “Chalouhi is a leading civil engineering and construction company with extensive experience in the industry.” Source: RevenueBase Database · checked Sep 6, 2026
14	Burton Contractors PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	65 contacts →
	Strong evidence “Burton Contractors is a multi-disciplined Civil Engineering Contractor approaching 200 employees and a fleet of more than 100 pieces of plant.” Source: RevenueBase Database · checked Sep 6, 2026
15	ACE Civil PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	201-500	65 contacts →
	Strong evidence “ACE Civil (formerly ACE Demolition and Excavation) has been established since 1997, the company is specialized in ground engineering and piling works in addition to demolition and…” Source: RevenueBase Database · checked Sep 6, 2026
16	Triaxial Consulting	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	57 contacts →
	Strong evidence “Established in 2012, Triaxial Consulting are a firm of Consulting Civil and Structural Engineers, who provide a suite of specialist consulting engineering services, to all…” Source: RevenueBase Database · checked Sep 6, 2026
17	Samsung C&t Corporation Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	n/a	57 contacts →
	Indirect evidence “Over the past half-century, Samsung C&T’s E&C Group has worked diligently to deliver the best value-added services to our clients by utilizing our top-tier talent and technical…” Source: RevenueBase Database · checked Sep 6, 2026
18	Barker Ryan Stewart	Indirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	56 contacts →
	Indirect evidence “At Barker Ryan Stewart, we believe in better.” Source: RevenueBase Database · checked Sep 6, 2026
19	ARCH	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	53 contacts →
	Strong evidence “Founded in 2014 by John Armstrong, ARCH Artifex (ARCH) is a specialist consultancy dedicated to delivering measurable, outcome-focused solutions in Systems Engineering & Safety…” Source: RevenueBase Database · checked Sep 6, 2026
20	SCP Consulting PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	52 contacts →
	Strong evidence “SCP Consulting is a national engineering consultancy with over 40 years of experience delivering innovative, practical design and management solutions across Australia.” Source: RevenueBase Database · checked Sep 6, 2026
21	MI Engineers	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	49 contacts →
	Strong evidence “MI Engineers is a tech-enabled engineering firm with over 40 years of experience.” Source: RevenueBase Database · checked Sep 6, 2026
22	Safesmart Access	Indirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	47 contacts →
	Indirect evidence “Australia \| New Zealand \| UK \| USA \| Canada.com.au \|.co.nz \|.co.uk \|.com \|.ca safesmartaviation.com \| proscaf.com We are experts in the in-house design and construction of…” Source: RevenueBase Database · checked Sep 6, 2026
23	Webb Australia Group	Strong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	46 contacts →
	Strong evidence “Webb Australia has a proud track record of over 40 years in the design of specialist engineering solutions across landmark projects in Australia, New Zealand, The Pacific Islands…” Source: RevenueBase Database · checked Sep 6, 2026
24	Riddwood Consulting Engineers	Indirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	44 contacts →
	Indirect evidence “Founded in 1979, Riddwood has been delivering for our clients for almost fifty years.” Source: RevenueBase Database · checked Sep 6, 2026
25	Witt Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	11-50	43 contacts →
	Indirect evidence “Specialist engineers consulting in the fields of temporary works, structural, geotechnical and heritage reuse.” Source: RevenueBase Database · checked Sep 6, 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 companies. 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 companies.
Partial evidence: Its own public description names part of engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering companies. 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 434 engineering companies based in Sydney, Australia

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Engineering companies based in Sydney, Australia at a glance

As of Sep 6, 2026

48.7%Verified-email coverage

22.8Average contacts per company

1-10Median size (employees)

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

264

11-50

113

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole Australia list rather than for Sydney, so it is reported there. Company counts and contact totals on this page are exact for Sydney, over 434 companies.

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 companies, 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 Sydney, Australia whose own description of what they do matches “engineering companies”. 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 companies), 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 companies, and records with no verified work email. Companies headquartered outside Sydney 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, 4,822 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 6, 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 companies by metro in Australia

Frequently asked

How many engineering companies are based in Sydney, Australia?

The directory lists 434 engineering companies based in Sydney, Australia as of September 2026.

What services do engineering companies provide?

Engineering companies provide services such as design, consulting, testing, project management, and technical support across disciplines and industries.

How can I find contacts at engineering companies?

This directory includes 9,897 contacts and 4,822 email addresses associated with engineering companies.

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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.