This list features large multinational companies based in North Sydney, primarily operating in essential services, infrastructure, and financial sectors. Ventia and Broadspectrum specialize in facilities services, while SMEC and CPB Contractors are prominent in engineering and construction. Australian Catholic University is a significant presence in higher education, and Secure Parking offers parking solutions.
Most of these companies were founded in the late 20th or early 21st century, indicating a relatively modern corporate landscape. A notable pattern is the strong representation of companies providing services crucial to urban development and community infrastructure, such as AirTrunk in data centers and Advisian in resource and energy consulting.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Ventiaventia.com
Ventia provides essential, safe, and sustainable services in various sectors to make infrastructure work for communities in Australia and New Zealand |
10,259 | |||
| 2 |
SMEC (an SJ Group company)smec.com
Global engineering consultancy specializing in urban development, infrastructure, and management services Providing design leadership and advisory services across various sectors |
7,311 | |||
| 3 |
CPB Contractorscpbcon.com.au
A trusted contractor building vital infrastructure in Australia and New Zealand, focusing on connectivity and sustainability for the future |
5,139 | |||
| 4 |
Australian Catholic Universityacu.edu.au
A university that values meaningful work, diversity, and community Fostering excellence in research, teaching, and service across multiple campuses |
4,798 | |||
| 5 |
Broadspectrumventia.com
A leading essential infrastructure services provider in Australia and New Zealand, ensuring infrastructure functions effectively for local communities |
2,731 | |||
| 6 |
Secure Parkingsecureparking.com.au
A leading service provider in parking solutions, part of a global organization, focused on innovative technology and customer satisfaction, with a strong company culture and values |
1,500 | |||
| 7 |
Advisianadvisian.com
Advisian provides comprehensive consulting services to solve resource, energy, and infrastructure challenges worldwide, delivering strategic, practical, and commercially oriented solutions |
1,360 | |||
| 8 |
Stellarprobecx.com
A global customer experience management organization specializing in contact center outsourcing, CX consulting, automation, analytics, and co-innovation with clients |
1,118 | |||
| 9 |
oOh!oohmedia.com.au
Leading outdoor advertising company with extensive digital and classic assets, connecting brands to millions across Australia and New Zealand weekly. |
997 | |||
| 10 |
Hollard Insurance Australiahollard.com.au
Distribution of diverse insurance products including life, income protection, pet, home, contents, and motor insurance for customers. |
860 | |||
| 11 |
AirTrunkairtrunk.com
Rapidly expanding technology provider delivering hyperscale data centers across APJ to meet the needs of influential tech companies |
776 | |||
| 12 |
Pepper Money ANZpeppermoney.com.au
Providing flexible home, car, commercial, equipment, and personal loans to help Australians and New Zealanders achieve financial goals. |
681 | |||
| 13 | 611 | ||||
| 14 |
SGKsgkinc.com
A leading Australian design agency that transforms packaging to amplify brands, enabling them to grow stronger and scale faster |
546 | |||
| 15 |
TTWttw.com.au
A privately owned company of award-winning consulting engineers specializing in innovative, economical, and elegant designs for complex projects in various sectors |
533 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Objective Corporationobjective.com.au
Develop software solutions for public sector organizations to enhance policy development, accelerate processes, and ensure secure, digital governance. |
499 | |||
| 17 |
CNScns.global
This company specializes in Cloud, Networking, and Security solutions, with a focus on providing IT managed services and support globally |
474 | |||
| 18 |
Gamuda Australiagamuda.com.au
Established in 1976, Gamuda delivers innovative infrastructure, concessions, and communities development internationally while focusing on core businesses in Australia |
465 | |||
| 19 |
CIMIC Groupcimic.com.au
Engineering-led construction, mining, services, and infrastructure development across asset lifecycles, supported by specialized subsidiaries and a strong safety focus. |
432 | |||
| 20 |
HCLTech - Australia and New Zealandhcltech.com
Global technology leader with over 223,400 employees in 60 countries, offering digital, engineering, cloud, AI services across various industries worldwide |
389 | |||
| 21 |
Cover-Morecovermore.com.au
Leading Australian travel insurance provider offering global support, emergency assistance, and partnerships with airlines, banks, and sporting clubs. |
373 | |||
| 22 |
NEXTGENnextgen.group
A pioneering technology services group supporting the channel ecosystem by managing a portfolio of vendors and providing innovative solutions across IT areas |
372 | |||
| 23 |
Best Western Australasiajoinbwhhotels.com.au
Global hospitality network comprising WorldHotels, Best Western Hotels & Resorts, and SureStay Hotels, with 4,700 hotels worldwide in 19 diverse brands |
346 | |||
| 24 |
Flight Centre Business Travel - Australiaflightcentre.com.au
A specialist in corporate travel for Australian emerging and SME businesses, FCBT offers tailored solutions with a focus on relationships and outstanding service |
345 | |||
| 25 |
Cubewisecubewise.com
Global consulting and software company solving complex FP&A challenges. Utilizing IBM Planning Analytics / TM1 for flexible, scalable, and high-performance business planning and analysis. |
319 | |||
| 26 |
Humanforcehumanforce.com
Humanforce offers a comprehensive HCM suite for frontline and flexible workforces to streamline WFM, HR, and Payroll processes, focusing on employee needs and business efficiency |
297 | |||
| 27 |
Sandstone Technologysandstonetechnology.com
A fintech innovator with over 25 years of experience, providing scalable and robust end-to-end financial solutions for banks globally |
295 | |||
| 28 |
FUJIFILM MicroChannelmicrochannel.com.au
Award-winning business technology solutions provider empowering customers in Australia, New Zealand, Fiji, Singapore, and South East Asia Specializing in ERP, CRM, BI, Retail, E-Commerce, and IT services |
261 | |||
| 29 |
Tata Consultancy Services - Australia and New Zealandtcs.com
IT services, consulting, and business solutions organization with over 55 years of experience, offering innovative services through a consulting-led approach |
255 | |||
| 30 |
enablesGROUPenablesgroup.com
Providing trusted, high-quality operations and outsourcing services with a design-led approach, serving over 100 global clients since 2016. |
233 | |||
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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 North Sydney
The same list elsewhere in Australia
- Multinational companies in Australia 1,184
- Multinational companies in New South Wales 512
- Multinational companies in Victoria 378
- Multinational companies in Queensland 134
- Multinational companies in Western Australia 75
- Multinational companies in South Australia 36
- Multinational companies in Sydney 279
- Multinational companies in Melbourne 162
- Multinational companies in Brisbane 41
- Multinational companies in Perth 39