David O'brien
CTO & Co-Founder at XIRUS Pty Ltd
Geelong, Victoria, Australia
Summary
👤
Senior🎓
Top SchoolDavid O'brien is a cloud security-focused CTO and co-founder based in Geelong, Australia, with 11 years of experience architecting and securing Microsoft Azure environments. As founder of ARGOS Cloud Security and former Microsoft Azure MVP (2014–2023), he blends hands-on cloud architecture with practical security leadership to reduce identity-driven breaches. He also runs consultancy XIRUS, helping organisations harden cloud identity and CI/CD pipelines while translating complex security needs into operational controls. An active open-source contributor, David improved cross-platform build and release automation for the widely used Versent/saml2aws tool, showcasing expertise in Windows packaging, Chocolatey, AppVeyor and GitHub release automation. Trained as an IT-Systemkaufmann in Germany, he pairs European systems-thinking with entrepreneurial grit to deliver pragmatic, auditable cloud security solutions. Colleagues know him for turning identity risk theory into repeatable engineering practices that scale across enterprises.
11 years of coding experience
IT-Systemkaufmann, IT-Systemkaufmann at Erich-Gutenberg-Berufskolleg Köln
German, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (12)
windows10
chocolatey10
automation10
automations10
appveyor10
cicd10
go9
powershell8
aws5
linux4
macos4
saml4
Programming languages (18)
Github contributions (5)
Versent/saml2aws
Jan 2017 - Jan 2018
CLI tool which enables you to login and retrieve AWS temporary credentials using a SAML IDP
Role in this project:
DevOps Engineer & Automation Engineer
DevOps Engineer & Automation EngineerContributions:18 commits, 13 PRs, 11 comments in 1 year
Contributions summary:David focused on improving the build and release processes for the `saml2aws` tool, demonstrating expertise in CI/CD. They implemented and refined an Appveyor configuration for Windows builds, added and configured Chocolatey package creation and publishing, and integrated GitHub release tagging. This work streamlined the build process and automated the delivery of the tool across different platforms.
awsclisamladfsosx
davidobrien1985/psaws
Jan 2017 - Dec 2017
Contributions:43 commits, 29 pushes, 1 branch in 10 months
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