Harold Villalobos

System Administrator with hands-on experience administering Windows servers, Active Directory, Microsoft 365, virtualization (VMware/HyperV), and network security (Fortinet, Cisco). Proven at improving reliability and efficiency by automating tasks and workflows using PowerShell, Power Automate and Make.com, and by implementing monitoring/alerting with PRTG. Strong in incident triage, user support, backup/DR procedures and cost-conscious license/capacity management; committed to maintaining high availability and enforcing security best practices.

IT Administrator at River Recycle (2025-09 – 2026-04)

• Managed Microsoft 365 and Exchange: handled user accounts, security groups, and license assignments to keep access and compliance up to date.
• Built Power Automate workflows in SharePoint to classify documents and automate file validation, reducing manual steps for the team.
• Integrated Pipedrive with Make and Airtable to automate deal tracking and produce weekly sales and inventory reports.
• Administered SharePoint sites and monitored storage capacity to prevent service interruptions.
• Wrote PowerShell scripts to automate SharePoint backups and improve recovery readiness.
• Managed Google Workspace directory, security settings, and shared drives to support collaboration.

Jr. System Administrator/Network at Tag Global Management (2025-02 – 2025-09)

• Managed on-premises Active Directory: user provisioning, group management, and Group Policy administration to enforce access controls.
• Administered Hyper-V hosts and virtual machines, including configuration, checkpoint management, and patch deployment.
• Handled client support tickets through the ticketing system, triaging and resolving incidents or escalating as needed to meet SLAs.

System Administrator (IRSIS) at UAS - Universal Access & Systems Solutions Inc. (2024-06 – 2024-12)

• Managed Ubuntu Linux servers: performance monitoring, disk cleanup, patching and troubleshooting to maintain system health and uptime.
• Managed PRTG Network Monitoring to monitor alerts, reports for utilization and capacity.
• Administered Quantum libraries and backup workflows to ensure data integrity and recoverability.
• Maintained Fortinet firewall and Cisco switch configurations to support secure network operations.

System Administrator (Security Bank Corporation) at Teligent Systems Inc. (2022-12 – 2024-06)

• Administered Windows Server environments (2016/2019/2022) and Exchange/Microsoft Admin Center; monitored Microsoft 365 license utilization and produced reports to optimize licensing costs.
• Maintained Active Directory and Group Policy to enforce security controls, manage user lifecycles, and support access requests.
• Provisioned servers and deployed VMs using VMware vCenter templates to accelerate deployments and standardize configurations.
• Managed storage provisioning and virtual disk volume expansions to meet capacity needs and minimize service impact.
• Used Ivanti to prioritize and resolve service requests; collaborated with incident, patch, and change teams to maintain SLAs and perform scheduled maintenance.
• Participated in disaster recovery drills and executed shutdown/recovery procedures according to playbooks to validate readiness.

IT Support at Vine Dresser Inc. (2021-12 – 2022-07)

• Provided firstline support: acknowledged, triaged, and resolved enduser tickets, escalating complex issues when necessary.
• Administered Windows Server 2019 and Active Directory: performed user creation, group management, and monitored file server disk capacity.
• Performed weekly server backups and routine maintenance to ensure data availability and system stability.

Bachelor of Science in Information Technology Major in Service Management – Batangas State University (2015 – 2020)