Nicholas O'Sullivan
IT leader and cyber security professional in Townsville
I'm Nicholas O'Sullivan — usually Nick — a Townsville-based IT professional with more than 15 years of experience across infrastructure, cloud platforms, education technology, cyber security, systems administration and practical technology leadership.
Professional focus
I focus on secure, explainable and maintainable technology: strengthening school technology foundations, improving cloud and identity governance, planning resilient infrastructure and helping organisations understand which technology risks and improvements matter most.
Technology leadership
Strategy, service delivery, infrastructure planning, documentation and practical risk management.
Cyber security
Identity, Microsoft 365, endpoint management, cloud governance and security-minded operations.
Infrastructure
Networks, servers, virtualisation, automation and maintainable systems for complex environments.
Recent articles
View all postsIf you work in tech, your own .id.au domain just makes sense
Why Australia's little-known .id.au domain is a cheap, practical home for your professional portfolio, personal email, technical writing and online identity.
North Queensland Cyber Watch: Nick Scali takes systems offline after cyber incident
Nick Scali has disclosed a cyber security incident that disrupted systems and slowed customer service nationally, including around its Townsville, Mackay and Cairns stores.
What cyber security jobs were advertised across North Queensland in 2025–26?
A fact-checked look at cyber security and cyber-adjacent jobs advertised in Townsville, Cairns and Mackay during 2025 and 2026, including salaries and career pathways.
Why I still take on cyber security consulting work in Townsville, outside the day job
I work as a cyber security consultant for small businesses, charities and community organisations around Townsville through Suburban Secure — here's why, and what that actually involves.