Company lists · Data refreshed September 2026

Top 25 Transit authority engineering services based in Sydney, Australia

Name: Transit authority engineering services based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 86 companies tracked

RevenueBase identified 86 transit authority engineering services headquartered in Sydney, Australia as of September 2026 and tracks 672 professional contacts across them, including 347 with verified work emails. Sydney is the largest hub.

This list covers transit authority engineering services headquartered in Sydney, 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 19, 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 19, 2026 86% judged on-target in blind review

86Companies

672Contacts tracked

347Verified emails

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The 25 largest transit authority engineering services based in Sydney, Australia

Ranked by team size

Top 25 of 86 transit authority engineering services based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transit authority engineering services: 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	Turnbull Engineering	Strong evidence	Sydney, AustraliaHQ checked Sep 19, 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 19, 2026
2	Chalouhi	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	51-200	67 contacts →
	Partial evidence “Chalouhi is a leading civil engineering and construction company with extensive experience in the industry.” Source: RevenueBase Database · checked Sep 19, 2026
3	ARCH	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	51-200	53 contacts →
	Partial 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 19, 2026
4	CWG Project Services	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	37 contacts →
	Partial evidence “CWG Project Services is a multi-disciplinary consultancy firm specialising in the provision of Project and Program Management and Systems Engineering & Safety Assurance services…” Source: RevenueBase Database · checked Sep 19, 2026
5	Ason Group	Strong evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	34 contacts →
	Strong evidence “Ason Group is a specialist traffic and transportation planning and engineering firm providing consultancy services to both the private and public sectors.” Source: RevenueBase Database · checked Sep 19, 2026
6	Nutbrook Group	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	32 contacts →
	Partial evidence “Nutbrook Group was established with the objective of integrating a values-driven approach to Consultancy, Engineering and Project Management services.” Source: RevenueBase Database · checked Sep 19, 2026
7	BMM Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “BMM Group provide project advisory and professional services to large scale infrastructure projects (telecommunications, rail, mining, energy) Our services include project…” Source: RevenueBase Database · checked Sep 19, 2026
8	Empire Project Management	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Empire Project Management was formed in 2017 by Mark Pritchard.” Source: RevenueBase Database · checked Sep 19, 2026
9	Indus Engineering PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “Indus Engineering is a specialist team of experienced engineering professionals providing project management and advisory services to all infrastructure developments.” Source: RevenueBase Database · checked Sep 19, 2026
10	Osmodal Group	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	18 contacts →
	Partial evidence “Osmodal Group is a professional services and strategic advisory business specialising in public transportation, fare collection and payments.” Source: RevenueBase Database · checked Sep 19, 2026
11	Paragon Engineering	Strong evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	18 contacts →
	Strong evidence “Paragon Engineering is a specialist consultancy operating across Australia, delivering practical and innovative engineering solutions to clients in the transport infrastructure…” Source: RevenueBase Database · checked Sep 19, 2026
12	CROI	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “At Croí (pronounced kree), we are an award-winning team delivering utility project management and design (ASP3 certified) with a commitment to innovation, efficiency, and…” Source: RevenueBase Database · checked Sep 19, 2026
13	JYW Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “JYW Consulting is a boutique consultancy that provides a complete range of services to Australasia and international road and rail transport organisations.” Source: RevenueBase Database · checked Sep 19, 2026
14	Civil Structures Studio	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	1-10	11 contacts →
	Partial evidence “Civil Structures Studio (CSS) is a collaboration of passionate and experienced individuals who revel in delivering complex structural engineering projects.” Source: RevenueBase Database · checked Sep 19, 2026
15	Certus Projects	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “Certus Projects is an engineering contractor with the infrastructure sector.” Source: RevenueBase Database · checked Sep 19, 2026
16	Pt&i	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “We are a professional engineering consultancy offering multi-sector expertise to define what is possible and practical to optimise the benefits of systems or technology deployment.” Source: RevenueBase Database · checked Sep 19, 2026
17	Avista Strategy	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “We are a strategic consultancy for the infrastructure industry, born out of the sense that there was a better way.” Source: RevenueBase Database · checked Sep 19, 2026
18	S&g Consultants PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “S&G Consultants Pty Ltd is a dynamic organisation founded in 2003 by Managing Director Samer El Haddad in response to a market demand for integrated consulting engineering…” Source: RevenueBase Database · checked Sep 19, 2026
19	MCE Management Commercial Engineering	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “MCE – Management • Commercial • Engineering was established in 2014 and is based in Sydney, Canberra, Queensland and Melbourne.” Source: RevenueBase Database · checked Sep 19, 2026
20	Mobility Futures	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	1-10	9 contacts →
	Partial evidence “Mobility Futures offers a broad range of consultancy services to help organisations implement technology solutions for better transport outcomes.” Source: RevenueBase Database · checked Sep 19, 2026
21	Digitise Consulting IS NOW BRS	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “Digitise Consulting is a specialist engineering consultancy providing Digital Advisory, Design and Engineering services to the public and private sector across infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
22	Hannover Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Hannover was founded in 2009 by Susanna Zaleski and has grown organically since.” Source: RevenueBase Database · checked Sep 19, 2026
23	KSH	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “KSH is an employee owned, specialised engineering and project service provider with a proven track record in complex multi-facet infrastructure projects.” Source: RevenueBase Database · checked Sep 19, 2026
24	PRO Consultants	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “PRO Consultants is an independent, Australian owned utilities services and project management consulting firm, specialising in the delivery of railway, road, development and…” Source: RevenueBase Database · checked Sep 19, 2026
25	Finch Advisory	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “Welcome to Finch Advisory, your trusted advisor in navigating complex infrastructure projects.” Source: RevenueBase Database · checked Sep 19, 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: transit authority engineering services. 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 transit authority engineering services.
Partial evidence: Its own public description names part of transit authority engineering services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transit authority engineering services. 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 86 transit authority engineering services based in Sydney, Australia

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Transit authority engineering services based in Sydney, Australia at a glance

As of Sep 19, 2026

51.6%Verified-email coverage

7.8Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Sydney

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 86 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 transit authority engineering services, 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 “transit authority engineering services”. 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 transit authority engineering services), 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 transit authority engineering services, 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, 347 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 19, 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.

Transit authority engineering services by metro in Australia

Transit authority engineering services in Sydney86
Transit authority engineering services in Melbourne76
Transit authority engineering services in Brisbane53
Transit authority engineering services in Perth29

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 transit authority engineering services, 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 transit authority engineering services are there based in Sydney, Australia?

RevenueBase identified 86 transit authority engineering services headquartered in Sydney, 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?

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

Which city has the most transit authority engineering services?

Sydney leads with 86 headquartered companies, followed by Melbourne (76) and Brisbane (53).

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 347 verified decision-maker contacts tracked across these 86 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 19, 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.