Company lists · Data refreshed September 2026

Top 25 Infrastructure services companies based in Australia

Name: Infrastructure services companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 589 companies tracked

RevenueBase identified 589 infrastructure services companies headquartered in Australia as of September 2026 and tracks 31,488 professional contacts across them, including 9,865 with verified work emails. Sydney is the largest hub.

This list covers infrastructure services companies 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 20, 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 20, 2026 86% judged on-target in blind review

589Companies

31,488Contacts tracked

9,865Verified emails

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The 25 largest infrastructure services companies based in Australia

Ranked by team size

Top 25 of 589 infrastructure services companies based in Australia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure services 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	Downer	Indirect evidence	North Ryde, AustraliaHQ checked Sep 20, 2026	10001+	10,666 contacts →
	Indirect evidence “Enabling communities to thrive.” Source: RevenueBase Database · checked Sep 20, 2026
2	SRG Global	Strong evidence	Perth, AustraliaHQ checked Sep 20, 2026	1,001-5,000	2,289 contacts →
	Strong evidence “SRG Global is a diversified infrastructure services company.” Source: RevenueBase Database · checked Sep 20, 2026
3	Service Stream	Indirect evidence	Docklands, AustraliaHQ checked Sep 20, 2026	1,001-5,000	1,823 contacts →
	Indirect evidence “Service Stream plays a vital role, working with our clients in keeping communities connected to essential network services across Australia.” Source: RevenueBase Database · checked Sep 20, 2026
4	Mader Group	Indirect evidence	Applecross, AustraliaHQ checked Sep 20, 2026	1,001-5,000	1,148 contacts →
	Indirect evidence “Mader Group is a leading global provider of specialist technical services across the mining, energy and industrial sectors.” Source: RevenueBase Database · checked Sep 20, 2026
5	Fredon	Strong evidence	Silverwater, AustraliaHQ checked Sep 20, 2026	1,001-5,000	760 contacts →
	Strong evidence “Fredon is an Australian leader in Electrical, HVAC, Infrastructure and Technology services, backed by 24/7 national maintenance capability.” Source: RevenueBase Database · checked Sep 20, 2026
6	Axiom Technologies	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	1,001-5,000	552 contacts →
	Indirect evidence “Axiom Technologies was founded to meet technological needs for Australia's medium & large scale enterprises providing end to end IT solution which delivers tailored solutions…” Source: RevenueBase Database · checked Sep 20, 2026
7	AVENG	Indirect evidence	Richmond, AustraliaHQ checked Sep 20, 2026	5,001-10,000	521 contacts →
	Indirect evidence “For more than 125 years, Aveng has evolved in character, capacity and reach and continues to make its mark across the globe.” Source: RevenueBase Database · checked Sep 20, 2026
8	Nextdc	Strong evidence	Brisbane City, AustraliaHQ checked Sep 20, 2026	201-500	457 contacts →
	Strong evidence “NEXTDC is an ASX100-listed digital infrastructure company enabling business transformation by delivering three core pillars of customer value: Operational Certainty, Future…” Source: RevenueBase Database · checked Sep 20, 2026
9	APD Global	Indirect evidence	Perth, AustraliaHQ checked Sep 20, 2026	1,001-5,000	455 contacts →
	Indirect evidence “We are APD Global.” Source: RevenueBase Database · checked Sep 20, 2026
10	Scee Electrical	Strong evidence	Perth, AustraliaHQ checked Sep 20, 2026	1,001-5,000	454 contacts →
	Strong evidence “SCEE Electrical is a leading and trusted national provider of specialised electrical, instrumentation, maintenance and communication services to the resources and infrastructure…” Source: RevenueBase Database · checked Sep 20, 2026
11	Nacap PTY LTD	Strong evidence	Doncaster, AustraliaHQ checked Sep 20, 2026	201-500	441 contacts →
	Strong evidence “Nacap is a leading energy infrastructure contractor with four decades of global experience in delivering large-scale and complex energy infrastructure projects to power…” Source: RevenueBase Database · checked Sep 20, 2026
12	Orro Group	Strong evidence	Sydney, AustraliaHQ checked Sep 20, 2026	201-500	393 contacts →
	Strong evidence “We are Orro – Australia’s platform-enabled, secure network and digital infrastructure provider.” Source: RevenueBase Database · checked Sep 20, 2026
13	CITEC	Indirect evidence	Brisbane, AustraliaHQ checked Sep 20, 2026	201-500	383 contacts →
	Indirect evidence “CITEC is the primary technology service provider for the Queensland Government delivering both whole-of-government and agency specific ICT services.” Source: RevenueBase Database · checked Sep 20, 2026
14	CV Services Group	Strong evidence	Hendra, AustraliaHQ checked Sep 20, 2026	501-1,000	364 contacts →
	Strong evidence “CV is a multi-disciplinary services provider delivering integrated solutions across infrastructure, construction, asset maintenance, power and signage.” Source: RevenueBase Database · checked Sep 20, 2026
15	LUCAS	Indirect evidence	Brisbane, AustraliaHQ checked Sep 20, 2026	201-500	355 contacts →
	Indirect evidence “Welcome to Lucas!” Source: RevenueBase Database · checked Sep 20, 2026
16	Atco Australia	Strong evidence	Perth, AustraliaHQ checked Sep 20, 2026	51-200	240 contacts →
	Strong evidence “ATCO's Australian operations are headquartered in Perth, Western Australia and specialises in creating innovative, customer focused energy and infrastructure solutions.” Source: RevenueBase Database · checked Sep 20, 2026
17	Pensar	Strong evidence	Hamilton, AustraliaHQ checked Sep 20, 2026	201-500	198 contacts →
	Strong evidence “We offer insightful, original design thinking, implemented by a team with proven expertise to deliver flexible fit-for-purpose critical infrastructure solutions.” Source: RevenueBase Database · checked Sep 20, 2026
18	Shamrock Civil Engineering	Strong evidence	Brisbane, AustraliaHQ checked Sep 20, 2026	51-200	185 contacts →
	Strong evidence “Shamrock Civil is a privately owned civil construction company, delivering services to the Defence & Government sectors, gas and mining, transport infrastructure and commercial.” Source: RevenueBase Database · checked Sep 20, 2026
19	Cape Dunstans	Strong evidence	South Guildford, AustraliaHQ checked Sep 20, 2026	201-500	176 contacts →
	Strong evidence “Cape Dunstans, an industry leader, delivers for its clients with a team of specialists across mining services, infrastructure and utilities installation.” Source: RevenueBase Database · checked Sep 20, 2026
20	Intuit Technologies	Indirect evidence	Hobart, AustraliaHQ checked Sep 20, 2026	51-200	172 contacts →
	Indirect evidence “Intuit Technologies is a Tasmanian-owned national IT services provider, with offices across Tasmania, Victoria, and Queensland.” Source: RevenueBase Database · checked Sep 20, 2026
21	Melchor	Strong evidence	Osborne Park, AustraliaHQ checked Sep 20, 2026	201-500	160 contacts →
	Strong evidence “Melchor offers an innovative and integrated approach to delivering large infrastructure and industrial projects in Perth Metro and remote locations.” Source: RevenueBase Database · checked Sep 20, 2026
22	Jaybro	Strong evidence	Arndell Park, AustraliaHQ checked Sep 20, 2026	201-500	155 contacts →
	Strong evidence “Jaybro Australia is a leading supplier to the infrastructure industry.” Source: RevenueBase Database · checked Sep 20, 2026
23	Blue Connections IT	Indirect evidence	Scoresby, AustraliaHQ checked Sep 20, 2026	51-200	147 contacts →
	Indirect evidence “Blue Connections IT is a leading Australian-owned provider of best-in-class IT solutions and managed services.” Source: RevenueBase Database · checked Sep 20, 2026
24	ETS Infrastructure Management	Strong evidence	Lilydale, AustraliaHQ checked Sep 20, 2026	1,001-5,000	131 contacts →
	Strong evidence “For over 40 years, ETS Infrastructure Management has been a leading force in Australia's infrastructure sector.” Source: RevenueBase Database · checked Sep 20, 2026
25	MONDO	Indirect evidence	Southbank, AustraliaHQ checked Sep 20, 2026	501-1,000	131 contacts →
	Indirect evidence “At Mondo, we see a bright future.” Source: RevenueBase Database · checked Sep 20, 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: infrastructure services 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 infrastructure services companies.
Partial evidence: Its own public description names part of infrastructure services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure services 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 589 infrastructure services companies based in Australia

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Infrastructure services companies based in Australia at a glance

As of Sep 20, 2026

31.3%Verified-email coverage

53.5Average contacts per company

11-50Median size (employees)

10.7%Largest-city concentration · Sydney

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

227

11-50

194

51-200

113

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 589 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 infrastructure services 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 Australia whose own description of what they do matches “infrastructure services 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 infrastructure services 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 infrastructure services companies, 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, 9,865 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 20, 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.

Infrastructure services companies 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 infrastructure services companies, 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 infrastructure services companies are there based in Australia?

RevenueBase identified 589 infrastructure services companies 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?

Downer, headquartered in North Ryde, tops this list with the largest team on record.

Which city has the most infrastructure services companies?

Sydney leads with 63 headquartered companies, followed by Melbourne (62) and Brisbane (33).

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 9,865 verified decision-maker contacts tracked across these 589 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 20, 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.