# Top 25 IT services companies in Sydney
Tamtam tracks 25 IT services companies headquartered in Sydney. This list ranks all of them by number of employees on LinkedIn, led by Deloitte Australia, Planit and NCS Group Australia. Their median headcount is 378. Half of them were founded in 2010 or later.
These IT services companies in Sydney are mainly mid-sized to large firms, with a strong focus on digital transformation, cloud services, and cybersecurity. Companies like Deloitte Australia offer professional services including cyber security and tech integration, while Planit specializes in quality engineering. NCS Group Australia provides consulting and digital solutions, and Atturra offers end-to-end IT transformation services.
The data shows a concentration of firms providing comprehensive IT support and strategic consulting. Many companies, such as NRI Australia & New Zealand and Nexon Asia Pacific, offer a broad range of services from strategy and infrastructure to managed IT and digital consulting. Macquarie Technology Group focuses on data center, cloud, and cyber security.
π¦πΊ Sydney Β· 25 companies Β· Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Deloitte Australia](https://www.tamtam.ai/c/deloitte-australia) (deloitte.com.au)
A forward-thinking professional services firm focused on cyber security, virtual reality, digital marketing, and tech integration across various industries, aiming to make a meaningful impact | Management Consulting | π¦πΊ Sydney | 7,674 | |
| 2 | [Planit](https://www.tamtam.ai/c/planit) (planit.com)
Global leader in quality engineering and assurance solutions, empowering businesses to enhance software quality and delivery processes through continuous growth and excellence | IT Services and IT Consulting | π¦πΊ Sydney | 1,931 | 1997 |
| 3 | [NCS Group Australia](https://www.tamtam.ai/c/ncs-group-australia) (ncs.co)
Leading technology services firm in Australia, specializing in consulting, digital, and applications Part of APAC region's NCS Group, with a focus on creating impactful solutions | IT Services and IT Consulting | π¦πΊ Sydney | 1,293 | 2000 |
| 4 | [Atturra](https://www.tamtam.ai/c/atturra) (atturra.com)
An Australian-based advisory and IT solutions provider offering end-to-end transformation services, including advisory, cloud services, data integration, and managed services, to clients worldwide | IT Services and IT Consulting | π¦πΊ Sydney | 1,049 | |
| 5 | [NRI Australia & New Zealand](https://www.tamtam.ai/c/nri-australia-and-new-zealand) (nri-anz.com)
Provider of transformative digital solutions through strategy, consulting, infrastructure, and managed IT services, with global reach and a passionate, customer-focused team | IT Services and IT Consulting | π¦πΊ Sydney | 846 | 1965 |
| 6 | [Nexon Asia Pacific](https://www.tamtam.ai/c/nexon-asia-pacific) (nexon.com.au)
An award-winning digital consulting partner offering end-to-end solutions in security, cloud, and digital services to mid-market, enterprise, and government organizations | IT Services and IT Consulting | π¦πΊ Sydney | 726 | |
| 7 | [Macquarie Technology Group](https://www.tamtam.ai/c/macquarie-technology-group) (macquarietechnologygroup.com)
An Australian company specializing in data center, cloud, cyber security, and telecom services for mid-large businesses and government clients Known for exceptional customer service | IT Services and IT Consulting | π¦πΊ Sydney | 707 | |
| 8 | [Ambition](https://www.tamtam.ai/c/ambition-sydney) (ambitiongrouplimited.com)
Specialized international recruitment firm with diverse expertise in various industries, providing career opportunities and personalized service to clients and candidates worldwide | Staffing and Recruiting | π¦πΊ Sydney | 684 | 1999 |
| 9 | [DBiz.ai](https://www.tamtam.ai/c/dbiz-ai) (dbiz.ai)
This company helps organizations with digital transformations through a combination of art and engineering, focusing on collaboration, empathy, and innovation | Software Development | π¦πΊ Sydney | 618 | |
| 10 | [FTS Group](https://www.tamtam.ai/c/fts-group) (ftsg.com.au)
An advisory technology consulting firm helping over 600 clients in public and private sectors leverage technology for growth and success | IT Services and IT Consulting | π¦πΊ Sydney | 501 | |
| 11 | [Orro Group](https://www.tamtam.ai/c/orro-group) (orro.group)
Australiaβs leading digital infrastructure provider offers end-to-end solutions for over 400 businesses, emphasizing security, efficiency, agility, and personalized service | IT Services and IT Consulting | π¦πΊ Sydney | 406 | |
| 12 | [Tech Domain](https://www.tamtam.ai/c/tech-domain) (techdomain.com.au)
Global IT support provider with 24/7 access to 5000+ trained engineers worldwide Offers tailored solutions for break-fix support, project resources, and smart hands-on assistance | IT Services and IT Consulting | π¦πΊ Sydney | 399 | 2020 |
| 13 | [Novigi](https://www.tamtam.ai/c/novigi) (novigi.com.au)
Specializing in data and technology solutions for the financial services industry, we provide expertise to solve complex problems and deliver value reliably | IT Services and IT Consulting | π¦πΊ Sydney | 378 | 2016 |
| 14 | [DXC Red Rock](https://www.tamtam.ai/c/dxc-red-rock) (dxc.to)
Leader in Oracle consulting and managed services in Australia and New Zealand, offering dynamic technology solutions for businesses globally | IT Services and IT Consulting | π¦πΊ Sydney | 340 | |
| 15 | [efex](https://www.tamtam.ai/c/efex) (efex.com.au)
A top provider of Managed Technology Solutions in Australia, offering accessible and straightforward IT services to local businesses nationwide | IT Services and IT Consulting | π¦πΊ Sydney | 311 | 2013 |
| 16 | [Cognizant Servian](https://www.tamtam.ai/c/cognizant-servian) (cognizant.com)
Specializing in cloud and data consulting, merging two expert teams to deliver digital transformation services for leading brands in the ANZ region | IT Services and IT Consulting | π¦πΊ Sydney | 283 | 2008 |
| 17 | [Digital Alchemy](https://www.tamtam.ai/c/digital-alchemy) (digitalalchemy.global)
A data-driven marketing company founded in 2003, now the largest in Asia Pacific, helping brands stay ahead, customer-centric, and relevant | IT Services and IT Consulting | π¦πΊ Sydney | 229 | 2003 |
| 18 | [Altis Consulting](https://www.tamtam.ai/c/altis-consulting) (altisconsulting.com)
Consulting firm specializing in data and analytics, delivering strategies, managed services, and insights to clients across Australia and New Zealand. | IT Services and IT Consulting | π¦πΊ Sydney | 205 | 1998 |
| 19 | [Cloudwerx](https://www.tamtam.ai/c/cloudwerx) (cloudwerx.co)
A Salesforce partner in APAC providing advisory, implementation, integration, managed services, and AI solutions to enhance businesses globally | IT Services and IT Consulting | π¦πΊ Sydney | 201 | 2018 |
| 20 | [Mav3rik](https://www.tamtam.ai/c/mav3rik) (mav3rik.com)
A strategic implementation partner specializing in Salesforce and MuleSoft, offering advisory, architecture, design, and delivery services for public sector and healthcare industries | IT Services and IT Consulting | π¦πΊ Sydney | 88 | 2017 |
| 21 | [ProQuest Consulting](https://www.tamtam.ai/c/proquest-consulting) (proquestit.com)
Leading Salesforce implementation partner in Australia, specializing in transforming businesses through automated processes and customer-centric innovations for a competitive edge | IT Services and IT Consulting | π¦πΊ Sydney | 47 | 2007 |
| 22 | [Cognitum](https://www.tamtam.ai/c/cognitum) (cognitum.eu)
Innovative software development house providing end-to-end IT services for Fortune 100 companies and startups, with expertise in AI, ML, and data science | Software Development | π¦πΊ Sydney | 36 | 2010 |
| 23 | [Clarity](https://www.tamtam.ai/c/clarity) (clarityint.com)
Global leader in providing operational management solutions for telecom, utilities and more, focusing on automation, optimization, monetization, data analytics, and customer engagement | IT Services and IT Consulting | π¦πΊ Sydney | 15 | 2014 |
| 24 | [Argo Logic](https://www.tamtam.ai/c/argo-logic) (argologic.com.au)
Salesforce implementation partner specializing in customer lifecycle engagement solutions for financial services, property, education, and automotive industries Integrating CRM with various tools | IT Services and IT Consulting | π¦πΊ Sydney | 11 | 2017 |
| 25 | [CloudActive](https://www.tamtam.ai/c/cloudactive) (cloudactive.com.au)
CloudActive is a Salesforce Implementation Partner offering digital transformation services through expert teams, cost effective delivery, and certified Salesforce implementation and support | IT Services and IT Consulting | π¦πΊ Sydney | 10 | 2019 |
## How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
## More company lists in Sydney
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- [Financial services firms in Sydney](https://www.tamtam.ai/l/financial-services-firms-sydney) (205)
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- [Retail chains in Sydney](https://www.tamtam.ai/l/retail-chains-sydney) (77)
- [Companies with a mobile app in Sydney](https://www.tamtam.ai/l/companies-with-mobile-app-sydney) (64)
- [Critical infrastructure operators in Sydney](https://www.tamtam.ai/l/critical-infrastructure-operators-sydney) (63)
- [Investment Management companies in Sydney](https://www.tamtam.ai/l/investment-management-companies-sydney) (60)
- [Corporate groups and holding companies in Sydney](https://www.tamtam.ai/l/holding-companies-sydney) (57)
- [SaaS companies in Sydney](https://www.tamtam.ai/l/saas-companies-sydney) (51)
- [IT Services and IT Consulting companies in Sydney](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-sydney) (49)
- [Consulting firms in Sydney](https://www.tamtam.ai/l/consulting-firms-sydney) (47)
- [Hotel and hospitality groups in Sydney](https://www.tamtam.ai/l/hospitality-groups-sydney) (41)
- [Subscription businesses in Sydney](https://www.tamtam.ai/l/subscription-businesses-sydney) (40)
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- [Venture capital and private equity firms in Sydney](https://www.tamtam.ai/l/vc-and-private-equity-firms-sydney) (33)
- [Real Estate companies in Sydney](https://www.tamtam.ai/l/real-estate-companies-sydney) (32)
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- [Software Development companies in Sydney](https://www.tamtam.ai/l/software-development-companies-sydney) (30)
## The same list elsewhere in Australia
- [IT services companies in Australia](https://www.tamtam.ai/l/it-services-companies-australia) (129)
- [IT services companies in New South Wales](https://www.tamtam.ai/l/it-services-companies-new-south-wales) (57)
- [IT services companies in Victoria](https://www.tamtam.ai/l/it-services-companies-victoria) (45)
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Source: https://www.tamtam.ai/l/it-services-companies-sydney