Company lists · Data verified August 2026

Top 17 Back office outsourcing companies based in Sydney, Australia

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 47 companies tracked

There are 47 back office outsourcing companies headquartered in Sydney, Australia (RevenueBase, August 2026). RevenueBase tracks 1,028 professional contacts across them, including 284 with verified work emails and 15 with mobile numbers. Sydney is the largest hub.

This list covers back office outsourcing companies headquartered in Sydney, Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

47Companies

1,028Contacts tracked

284Verified emails

15Mobile numbers

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The 17 largest back office outsourcing companies based in Sydney, Australia

Ranked by team size

Top 17 of 47 back office outsourcing companies based in Sydney, Australia, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Hammerjack	Sydney	501-1,000	356	167
2	Afrishore BPO	Sydney	501-1,000	271	62
3	Koruna Assist PTY LTD	Sydney	51-200	78	16
4	The Outsourced Expert	Sydney	11-50	30	8
5	maxstaff.co	Sydney	11-50	20	2
6	PAY Australia PTY LTD	Sydney	11-50	16	7
7	Offshored	Sydney	51-200	15	5
8	Remostaff	Sydney	51-200	14	2
9	Cool Pixels	Sydney	11-50	14	1
10	Werk OUT	Sydney	11-50	9	5
11	Accountee	Sydney	11-50	4	2
12	Brokers' Backoffice	Sydney	1-10	3	2
13	Olivetree Consultants	Sydney	11-50	3	1
14	Vault Outsourcing	Sydney	201-500	2	1
15	Fourfold Australia Pty. LTD	Sydney	11-50	2	1
16	Business Lane	Sydney	1-10	1	1
17	Shared And Halved Consulting Pty. LTD	Sydney	1-10	1	1

Showing 17 of 47 back office outsourcing companies based in Sydney, Australia

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Back office outsourcing companies based in Sydney, Australia at a glance

As of Aug 28, 2026

11-50Median size (employees)

SydneyLargest hub · 47 HQs

15Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Back office outsourcing companies by metro in Australia

Metro	Companies
Back office outsourcing companies in Sydney	47
Back office outsourcing companies in Melbourne	34
Back office outsourcing companies in Brisbane	7
Back office outsourcing companies in Perth	7
Back office outsourcing companies in Adelaide	5
Back office outsourcing companies in Canberra	3
Back office outsourcing companies in Brisbane City	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “back office outsourcing companies”, with match quality audited by blind human judging, and headquartered in Sydney, Australia.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many back office outsourcing companies are there based in Sydney, Australia?

There are 47 back office outsourcing companies headquartered in Sydney, Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most back office outsourcing companies?

Sydney leads with 47 headquartered companies, followed by Melbourne (34) and Brisbane (7).

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 284 verified decision-maker contacts tracked across these 47 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.