# 30 leading multinational companies in North Sydney

Tamtam tracks 36 multinational companies headquartered in North Sydney. This list ranks the 30 largest by number of employees on LinkedIn, led by Ventia, SMEC (an SJ Group company) and CPB Contractors. Their median headcount is 533. Half of them were founded in 1995 or later.

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.

🇦🇺 North Sydney · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Ventia](https://www.tamtam.ai/c/ventia-north-sydney) (ventia.com)<br>Ventia provides essential, safe, and sustainable services in various sectors to make infrastructure work for communities in Australia and New Zealand | Facilities Services | 🇦🇺 North Sydney | 10,259 |  |
| 2 | [SMEC (an SJ Group company)](https://www.tamtam.ai/c/smec-an-sj-group-company) (smec.com)<br>Global engineering consultancy specializing in urban development, infrastructure, and management services Providing design leadership and advisory services across various sectors | Engineering Services | 🇦🇺 North Sydney | 7,311 | 1970 |
| 3 | [CPB Contractors](https://www.tamtam.ai/c/cpb-contractors) (cpbcon.com.au)<br>A trusted contractor building vital infrastructure in Australia and New Zealand, focusing on connectivity and sustainability for the future | Construction | 🇦🇺 North Sydney | 5,139 | 1949 |
| 4 | [Australian Catholic University](https://www.tamtam.ai/c/australian-catholic-university) (acu.edu.au)<br>A university that values meaningful work, diversity, and community Fostering excellence in research, teaching, and service across multiple campuses | Higher Education | 🇦🇺 North Sydney | 4,798 | 1991 |
| 5 | [Broadspectrum](https://www.tamtam.ai/c/broadspectrum) (ventia.com)<br>A leading essential infrastructure services provider in Australia and New Zealand, ensuring infrastructure functions effectively for local communities | Facilities Services | 🇦🇺 North Sydney | 2,731 |  |
| 6 | [Secure Parking](https://www.tamtam.ai/c/secure-parking) (secureparking.com.au)<br>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 | Leasing Non-residential Real Estate | 🇦🇺 North Sydney | 1,500 | 1979 |
| 7 | [Advisian](https://www.tamtam.ai/c/advisian) (advisian.com)<br>Advisian provides comprehensive consulting services to solve resource, energy, and infrastructure challenges worldwide, delivering strategic, practical, and commercially oriented solutions | Business Consulting and Services | 🇦🇺 North Sydney | 1,360 |  |
| 8 | [Stellar](https://www.tamtam.ai/c/stellar-north-sydney) (probecx.com)<br>A global customer experience management organization specializing in contact center outsourcing, CX consulting, automation, analytics, and co-innovation with clients | Outsourcing and Offshoring Consulting | 🇦🇺 North Sydney | 1,118 |  |
| 9 | [oOh!](https://www.tamtam.ai/c/ooh) (oohmedia.com.au)<br>Leading outdoor advertising company with extensive digital and classic assets, connecting brands to millions across Australia and New Zealand weekly. | Advertising Services | 🇦🇺 North Sydney | 997 | 1989 |
| 10 | [Hollard Insurance Australia](https://www.tamtam.ai/c/hollard-insurance-australia) (hollard.com.au)<br>Distribution of diverse insurance products including life, income protection, pet, home, contents, and motor insurance for customers. | Insurance | 🇦🇺 North Sydney | 860 | 1999 |
| 11 | [AirTrunk](https://www.tamtam.ai/c/airtrunk) (airtrunk.com)<br>Rapidly expanding technology provider delivering hyperscale data centers across APJ to meet the needs of influential tech companies | Telecommunications | 🇦🇺 North Sydney | 776 | 2015 |
| 12 | [Pepper Money ANZ](https://www.tamtam.ai/c/pepper-money-anz) (peppermoney.com.au)<br>Providing flexible home, car, commercial, equipment, and personal loans to help Australians and New Zealanders achieve financial goals. | Financial Services | 🇦🇺 North Sydney | 681 | 2000 |
| 13 | [Axi](https://www.tamtam.ai/c/axi) (axi.com)<br>A global broker providing secure and fast trading services for customers in over 100 countries, with multiple regulatory authorizations and awards | Financial Services | 🇦🇺 North Sydney | 611 | 2007 |
| 14 | [SGK](https://www.tamtam.ai/c/sgk) (sgkinc.com)<br>A leading Australian design agency that transforms packaging to amplify brands, enabling them to grow stronger and scale faster | Design Services | 🇦🇺 North Sydney | 546 |  |
| 15 | [TTW](https://www.tamtam.ai/c/ttw) (ttw.com.au)<br>A privately owned company of award-winning consulting engineers specializing in innovative, economical, and elegant designs for complex projects in various sectors | Engineering Services | 🇦🇺 North Sydney | 533 | 1958 |
| 16 | [Objective Corporation](https://www.tamtam.ai/c/objective-corporation) (objective.com.au)<br>Develop software solutions for public sector organizations to enhance policy development, accelerate processes, and ensure secure, digital governance. | Software Development | 🇦🇺 North Sydney | 499 | 1987 |
| 17 | [CNS](https://www.tamtam.ai/c/cns-north-sydney) (cns.global)<br>This company specializes in Cloud, Networking, and Security solutions, with a focus on providing IT managed services and support globally | IT Services and IT Consulting | 🇦🇺 North Sydney | 474 | 1997 |
| 18 | [Gamuda Australia](https://www.tamtam.ai/c/gamuda-australia) (gamuda.com.au)<br>Established in 1976, Gamuda delivers innovative infrastructure, concessions, and communities development internationally while focusing on core businesses in Australia | Construction | 🇦🇺 North Sydney | 465 |  |
| 19 | [CIMIC Group](https://www.tamtam.ai/c/cimic-group) (cimic.com.au)<br>Engineering-led construction, mining, services, and infrastructure development across asset lifecycles, supported by specialized subsidiaries and a strong safety focus. | Civil Engineering | 🇦🇺 North Sydney | 432 |  |
| 20 | [HCLTech - Australia and New Zealand](https://www.tamtam.ai/c/hcltech-australia-and-new-zealand) (hcltech.com)<br>Global technology leader with over 223,400 employees in 60 countries, offering digital, engineering, cloud, AI services across various industries worldwide | IT Services and IT Consulting | 🇦🇺 North Sydney | 389 | 1997 |
| 21 | [Cover-More](https://www.tamtam.ai/c/cover-more) (covermore.com.au)<br>Leading Australian travel insurance provider offering global support, emergency assistance, and partnerships with airlines, banks, and sporting clubs. | Insurance | 🇦🇺 North Sydney | 373 | 1986 |
| 22 | [NEXTGEN](https://www.tamtam.ai/c/nextgen) (nextgen.group)<br>A pioneering technology services group supporting the channel ecosystem by managing a portfolio of vendors and providing innovative solutions across IT areas | IT Services and IT Consulting | 🇦🇺 North Sydney | 372 | 2011 |
| 23 | [Best Western Australasia](https://www.tamtam.ai/c/best-western-australasia) (joinbwhhotels.com.au)<br>Global hospitality network comprising WorldHotels, Best Western Hotels & Resorts, and SureStay Hotels, with 4,700 hotels worldwide in 19 diverse brands | Hospitality | 🇦🇺 North Sydney | 346 | 1957 |
| 24 | [Flight Centre Business Travel - Australia](https://www.tamtam.ai/c/flight-centre-business-travel-australia) (flightcentre.com.au)<br>A specialist in corporate travel for Australian emerging and SME businesses, FCBT offers tailored solutions with a focus on relationships and outstanding service | Travel Arrangements | 🇦🇺 North Sydney | 345 |  |
| 25 | [Cubewise](https://www.tamtam.ai/c/cubewise) (cubewise.com)<br>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. | IT Services and IT Consulting | 🇦🇺 North Sydney | 319 | 2004 |
| 26 | [Humanforce](https://www.tamtam.ai/c/humanforce) (humanforce.com)<br>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 | Software Development | 🇦🇺 North Sydney | 297 |  |
| 27 | [Sandstone Technology](https://www.tamtam.ai/c/sandstone-technology) (sandstonetechnology.com)<br>A fintech innovator with over 25 years of experience, providing scalable and robust end-to-end financial solutions for banks globally | Software Development | 🇦🇺 North Sydney | 295 | 1996 |
| 28 | [FUJIFILM MicroChannel](https://www.tamtam.ai/c/fujifilm-microchannel) (microchannel.com.au)<br>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 | IT Services and IT Consulting | 🇦🇺 North Sydney | 261 | 1995 |
| 29 | [Tata Consultancy Services - Australia and New Zealand](https://www.tamtam.ai/c/tata-consultancy-services-australia-and-new-zealand) (tcs.com)<br>IT services, consulting, and business solutions organization with over 55 years of experience, offering innovative services through a consulting-led approach | Business Consulting and Services | 🇦🇺 North Sydney | 255 | 1968 |
| 30 | [enablesGROUP](https://www.tamtam.ai/c/enablesgroup) (enablesgroup.com)<br>Providing trusted, high-quality operations and outsourcing services with a design-led approach, serving over 100 global clients since 2016. | Outsourcing and Offshoring Consulting | 🇦🇺 North Sydney | 233 | 2016 |

## 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 largest companies in North Sydney](https://www.tamtam.ai/l/largest-companies-north-sydney) (105)

## The same list elsewhere in Australia

- [Multinational companies in Australia](https://www.tamtam.ai/l/multinational-companies-australia) (1,184)
- [Multinational companies in New South Wales](https://www.tamtam.ai/l/multinational-companies-new-south-wales) (512)
- [Multinational companies in Victoria](https://www.tamtam.ai/l/multinational-companies-victoria) (378)
- [Multinational companies in Queensland](https://www.tamtam.ai/l/multinational-companies-queensland) (134)
- [Multinational companies in Western Australia](https://www.tamtam.ai/l/multinational-companies-western-australia) (75)
- [Multinational companies in South Australia](https://www.tamtam.ai/l/multinational-companies-south-australia) (36)
- [Multinational companies in Sydney](https://www.tamtam.ai/l/multinational-companies-sydney) (279)
- [Multinational companies in Melbourne](https://www.tamtam.ai/l/multinational-companies-melbourne) (162)
- [Multinational companies in Brisbane](https://www.tamtam.ai/l/multinational-companies-brisbane) (41)
- [Multinational companies in Perth](https://www.tamtam.ai/l/multinational-companies-perth) (39)

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Source: https://www.tamtam.ai/l/multinational-companies-north-sydney