Senior IT Systems Administrator with over 20 years of experience in managing large-scale Microsoft environments and enterprise IT operations. Proven expert in deploying and administering Windows Server ecosystems (through Server 2025), Azure Cloud, and VMware virtualization. I specialize in streamlining IT service management using JIRA/ManageEngine and enhancing security through advanced firewall and endpoint protection. A results-driven professional with a track record of leading high-stakes projects for organizations like JICA and PLDT, ensuring 99.9% system uptime and seamless user support.