Security & identity engineer.
Now building with AI.
I'm Marco — a senior technology & security engineer with 20+ years across Telstra, ANZ, TPG and the Australian Defence environment. These days I'm focused on where automation, AI and good system design meet: removing the complexity that shouldn't be there in the first place.
Twenty years of making complex systems make sense.
I'm a senior technology and security engineer with a background spanning enterprise infrastructure, identity and access management, networking, cloud technologies, cybersecurity and automation. Over the course of my career I've worked across some of Australia's largest and most complex technology environments — including Telstra, ANZ, TPG and the Australian Defence environment.
My particular strength is working at the intersection of technology, security and business process — understanding how systems actually operate, identifying where complexity or risk has been introduced, and designing practical solutions to fix it.
Lately, that means going deep on how automation and AI can strip unnecessary complexity out of organisations — not as a buzzword, but as the next evolution of the same problem I've been solving for two decades.
- Identity & Access Management — Active Directory, Microsoft Entra ID, FIM/MIM, directory synchronisation at enterprise scale.
- Cybersecurity & Compliance — Essential Eight remediation, security control design, audit & compliance across regulated environments.
- Automation & AI — PowerShell automation, process re-engineering, and applying AI to remove operational drag.
- Solution Design & Migration — Large-scale platform migrations, technical consulting, and delivering where there's no out-of-the-box answer.
Two decades, one thread: fixing complexity.
A condensed look at the roles that shaped it — full history on the CV.
Some of the more interesting problems I've solved.
A handful of projects that stretched further than "keep the lights on."
Modernising Telstra's core identity platform
Led the migration of Telstra's production identity synchronisation platform from FIM to MIM (Windows Server 2008 → 2019), and directed Essential Eight Active Directory remediation with a 10+ person cross-functional team — including custom-built privileged identity lifecycle management.
Enterprise SSO at a top-4 bank
One of only two Azure Active Directory specialists at ANZ Bank, delivering multiple SSO integrations while supporting offshore delivery teams on both technical execution and ITIL process fundamentals.
AD platform for a 10,000-seat enterprise
Highest-level Active Directory escalation point for the Origin Energy account (10,000+ seats, 1,500+ production servers) at Hewlett-Packard. Built custom reporting and billing middleware that was later adopted into HP's international script repository.
Multi-domain AD consolidation
Consolidated Active Directory domains and forests through TPG's acquisition of Vodafone, delivered remotely for worldwide IT managed services firm NTT Global.
What I actually work in, day to day.
Identity & Access Management
Active Directory, Microsoft Entra ID, FIM/MIM, SAML, SSO
Cybersecurity
Essential Eight remediation, compliance & auditing, security controls
Enterprise Infrastructure
Networking, cloud & corporate security controls, large-scale migrations
Automation
PowerShell, technical automation, process re-engineering
AI & Applied Automation
Using AI-driven tooling to remove operational drag from real workflows
Solution Design
Technical consulting, transformation programs, stakeholder delivery
Off the clock, you'll usually find me deep in motorsport — I run Marco Melbourne Motorsport on YouTube. Turns out the same instinct that debugs a directory sync issue is pretty handy for picking apart a race strategy.
Let's build something that works.
Open to conversations about identity, security engineering, automation, or where AI actually fits into enterprise IT. Based in Melbourne — happy to chat remote too.