Available for new opportunities

Hi, I'm Tom Clark

Senior Cloud Security & Platform Engineer

I secure and operate Microsoft cloud platforms at enterprise scale — across organisations from 2,500 to 15,000+ staff. I specialise in the Microsoft E5 security stack, Zero Trust architecture, Sentinel SIEM/SOAR, and compliance frameworks including PCI-DSS and ISO 27001. I also write about what I learn here on this blog.

Microsoft E5 Microsoft Sentinel Defender for Cloud Defender for Identity Defender XDR Entra ID Zero Trust Conditional Access PIM Azure Infrastructure KQL PowerShell PCI-DSS ISO 27001 CIS Benchmarks IAM SIEM / SOAR Exchange Online Intune

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Featured Projects

⭐ Featured

Sentinel SIEM/SOAR Build-out

Designed and delivered Microsoft Sentinel from the ground up at a 2,500-staff organisation — connectors, custom analytics rules, automation playbooks, and logic apps. Integrated with Defender EASM and the full E5 Defender suite.

Microsoft Sentinel KQL Logic Apps Defender EASM SOAR
⭐ Featured

Azure Landing Zone Design & Compliance

Led the Microsoft Azure Landing Zone design and compliance assessment for NZ Police (15,000+ staff). Established governance, security baselines, and compliance against CIS Benchmarks — contributing to a 1.8-point score improvement.

Azure Landing Zone CIS Benchmarks GRC Compliance

Looking for a Cloud Security Engineer?

I'm currently open to new senior roles in cloud security and platform engineering. Let's have a conversation.