Company lists · Data refreshed September 2026

Top 25 Legacy system modernization firms based in Sydney, Australia

Name: Legacy system modernization firms based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 134 companies tracked

RevenueBase identified 134 legacy system modernization firms headquartered in Sydney, Australia as of September 2026 and tracks 2,041 professional contacts across them, including 824 with verified work emails. Melbourne is the largest hub.

This list covers legacy system modernization firms 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 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

134Companies

2,041Contacts tracked

824Verified emails

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The 25 largest legacy system modernization firms based in Sydney, Australia

Ranked by team size

Top 25 of 134 legacy system modernization firms based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to legacy system modernization 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	NRI Australia & NEW Zealand	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1,001-5,000	711 contacts →
	Indirect evidence “As a trusted end-to-end digital partner, we design, build, and manage IT solutions that turn bold visions into reality and set new standards of excellence for our clients.” Source: RevenueBase Database · checked Sep 20, 2026
2	Barhead, An Akkodis Company	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	10001+	177 contacts →
	Indirect evidence “Barhead, an Akkodis company, is an award-winning consulting firm focused on leveraging Microsoft’s Technology Stack to deliver business solutions.” Source: RevenueBase Database · checked Sep 20, 2026
3	Wild Tech	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	77 contacts →
	Indirect evidence “With real-world experience, a global team, and the trust of local clients, we’re the end-to-end technology partner businesses rely on to turn bold ideas into powerful results.” Source: RevenueBase Database · checked Sep 20, 2026
4	DNX Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	66 contacts →
	Indirect evidence “DNX is an Australian modernisation transformation partner and trusted advisor helping organisations evolve with clarity and confidence.” Source: RevenueBase Database · checked Sep 20, 2026
5	Software At Scale	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	46 contacts →
	Indirect evidence “A leading technology consultancy that empowers businesses with comprehensive solutions for their digital transformation.” Source: RevenueBase Database · checked Sep 20, 2026
6	Partner 2 Simplify P2s	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	42 contacts →
	Indirect evidence “Ideate, Inspire, Innovate, Implement Partner 2 Simplify (P2S) is a global IT services company simplifying digital transformation for organisations across Australia, India, and the…” Source: RevenueBase Database · checked Sep 20, 2026
7	Devops1	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	40 contacts →
	Indirect evidence “At DevOps1, our technologists are dedicated to using their collective experience and knowledge of modern engineering best practices to deliver effective, secure, and…” Source: RevenueBase Database · checked Sep 20, 2026
8	Digizoo	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	35 contacts →
	Partial evidence “Digizoo was formed to fill a gap in the market for practical, technical transition from traditional systems and processes to the new digital world, increasingly sought by their…” Source: RevenueBase Database · checked Sep 20, 2026
9	Alembic	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	35 contacts →
	Indirect evidence “We deliver future proof software for organisations that rely on technology to enable their business.” Source: RevenueBase Database · checked Sep 20, 2026
10	Sazae PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	35 contacts →
	Indirect evidence “About Sazae Pty Ltd Sazae Pty Ltd is a global IT consulting company headquartered in Sydney, with offices in Australia, Japan, and Vietnam.” Source: RevenueBase Database · checked Sep 20, 2026
11	Solista	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	35 contacts →
	Indirect evidence “2018 - ARN Innovation Award - Customer Value 2017 -#22 Deloitte Tech Fast 50 2017 #10 CRN Fast 50 2016 #4 CRN Fast 50 We turn IT into a business asset, not a liability.” Source: RevenueBase Database · checked Sep 20, 2026
12	High Tech Masterminds	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	n/a	33 contacts →
	Indirect evidence “We are a high technology consulting firm in Sydney, Australia.” Source: RevenueBase Database · checked Sep 20, 2026
13	Advance Delivery Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	501-1,000	32 contacts →
	Indirect evidence “Advance Delivery Consulting (ADC) is a trusted IT consulting partner across Australia, APAC, and the Middle East, driving transformational business value through innovative…” Source: RevenueBase Database · checked Sep 20, 2026
14	Switch	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	26 contacts →
	Indirect evidence “Switch is a multi-award-winning digital experience and technology agency with proven success in deliver with proven success in delivering the complete vision for customer…” Source: RevenueBase Database · checked Sep 20, 2026
15	Luxoft Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	n/a	25 contacts →
	Indirect evidence “Luxoft, a DXC Technology Company, is a trusted partner in global digital transformation and a leader in delivering competitive advantage in the software-defined world.” Source: RevenueBase Database · checked Sep 20, 2026
16	Datalynx	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Datalynx is an Australian company providing innovative, world-class enterprise data management software.” Source: RevenueBase Database · checked Sep 20, 2026
17	Vervio Digital	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	23 contacts →
	Indirect evidence “Vervio is a digital engineering consultancy that designs, delivers and supports enterprise-grade digital experience platforms, cloud modernisation, and AI-enabled solutions.” Source: RevenueBase Database · checked Sep 20, 2026
18	Nikqik Technologies	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Welcome to Nikqik Technologies, Where Innovation Meets Execution.” Source: RevenueBase Database · checked Sep 20, 2026
19	Storata Business Solutions	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial evidence “Storata is an Australian Systems Integrator and Business Consulting who specialise in the lean digital transformation of enterprise systems and processes.” Source: RevenueBase Database · checked Sep 20, 2026
20	Rocket LAB PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “We conduct experiments that may or may not seriously break the universe.” Source: RevenueBase Database · checked Sep 20, 2026
21	Givemore Delivery	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “GiveMore is a unique consultancy facilitating technology delivering for Insurance & Financial Services companies.” Source: RevenueBase Database · checked Sep 20, 2026
22	Logicore	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “Founded in 2013 \| Headquartered in Sydney Operating across APAC, EMEA and the Americas Delivering certainty in Enterprise Architecture, Integration and Digital Transformation What…” Source: RevenueBase Database · checked Sep 20, 2026
23	Implementium	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	12 contacts →
	Indirect evidence “Implementium is an information technology advisory/consulting organisation specialising in the following domains of expertise- Enterprise Applications i.e.” Source: RevenueBase Database · checked Sep 20, 2026
24	Kororo	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	11 contacts →
	Indirect evidence “Kororo is a Sydney-based digital transformation and development company that focuses on Artificial Intelligence, automation, and data processing.” Source: RevenueBase Database · checked Sep 20, 2026
25	Whitetower Digital PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	11 contacts →
	Indirect evidence “Whitetower is dedicated to enabling our clients to stay ahead of the curve in the fast-paced business environment through digital transformation.” 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: legacy system modernization 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 legacy system modernization firms.
Partial evidence: Its own public description names part of legacy system modernization firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name legacy system modernization 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 134 legacy system modernization firms based in Sydney, Australia

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Legacy system modernization firms based in Sydney, Australia at a glance

As of Sep 20, 2026

40.4%Verified-email coverage

15.2Average contacts per company

11-50Median size (employees)

108.2%Largest-city concentration · Melbourne

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 134 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 legacy system modernization 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 Sydney, Australia whose own description of what they do matches “legacy system modernization 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 legacy system modernization 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 legacy system modernization firms, 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, 824 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.

Legacy system modernization firms by metro in Australia

Legacy system modernization firms in Melbourne145
Legacy system modernization firms in Sydney134
Legacy system modernization firms in Brisbane38
Legacy system modernization firms in Perth35

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 legacy system modernization 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 legacy system modernization firms are there based in Sydney, Australia?

RevenueBase identified 134 legacy system modernization firms 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?

NRI Australia & NEW Zealand, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most legacy system modernization firms?

Melbourne leads with 145 headquartered companies, followed by Sydney (134) and Brisbane (38).

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 824 verified decision-maker contacts tracked across these 134 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.