Here are some Australian-based companies in various industries that have branch offices and remote employees in other countries:
Atlassian: Software development and collaboration tools company with offices in the US, UK, and other countries.
Canva: Online graphic design platform with offices in the US, China, and the Philippines.
Freelancer: Online freelance marketplace with operations in the US, UK, and India.
Cochlear: Medical device company with subsidiaries in over 20 countries.
Macquarie Group: Financial services company with offices in the US, UK, and Asia-Pacific.
Lendlease: Construction and property management company with operations in the US, UK, and Asia-Pacific.
BHP: Mining and metals company with operations in North and South America, Europe, and Asia.
CSL Limited: Biotech company with operations in the US, Europe, and Asia-Pacific.
QBE Insurance Group: Insurance company with offices in North and South America, Europe, and Asia-Pacific.
Telstra: Telecommunications and technology company with offices in the US, UK, and Asia-Pacific.
Note that this is not an exhaustive list, and there may be other Australian-based companies with international branch offices and remote employees.