Gerry Valerio

Infrastructure & Systems Administrator with 20+ years of IT experience across government, utility, and enterprise environments. Proven track record leading NOC/SOC operations for the Philippine National ID Project (PSA), maintaining 99.95% uptime across 90+ VMware ESXi hosts, 400+ VMs, and 3 data centers. Combines hands-on virtualization, storage, backup/DR, and cloud infrastructure management with L2/L3 IT support, patch automation, and vulnerability remediation.

System Administrator - Madras Security Printers Pvt. Ltd. - Pasig City, Philippines (Client: Philippine Statistics Authority – National ID)

(2021-08)

• Administer enterprise VMware vSphere 7 environments comprising 90+ ESXi hosts and 400+ VMs across 3 data centers, configuring vCenter, clusters, datastores, and DRS/HA to sustain 99.95% uptime.
• Deploy, configure, and troubleshoot RHEL 8.4, Ubuntu, and Windows Server 2022 in multi-site HA environments, managing storage provisioning, Active Directory, and DNS replication.
• Manage Cisco UCS blade servers, Fabric Interconnects, and core network services (AD DS, DNS, DHCP, NTP).
• Execute backup and disaster recovery operations utilizing IBM Spectrum Protect Plus, overseeing SLA-based schedules, database backups, and lifecycle retention policies.
• Administer endpoint protection with Trend Micro Deep Security and Apex Central, managing agent deployments, security policies, and L2/L3 escalations.
• Resolve L2/L3 support tickets across domain, server, end-user, network, system, and backup infrastructures.
• Lead Windows Server patch management and vulnerability remediation to maintain strict compliance and security standards.
• Support AWS cloud workload deployments and manage hybrid backup repositories to ensure storage capacity and restore readiness.
• Coordinate vendor support cases, hardware RMAs, and third-party escalations; author SOPs, user manuals, and VM utilization reports.
• Execute User Acceptance Testing (UAT) and delivered comprehensive knowledge transfers for core infrastructure, including IBM FlashSystem 5030, IBM TS4500 Tape Library, Cisco APIC/FTD/FMC, and Radware Load Balancers.
• Provide hands-on mentorship to the L1 support team and oversee supplier coordination.

System and Network Administrator - Global Water & Energy - Muntinlupa City, Philippines

(2014-01 - 2021-04)

• Architected and deployed Windows Server infrastructure (file, email, and print servers) to enhance operational resiliency.
• Administered Active Directory, Group Policy (GPO), Microsoft 365, Exchange, Azure, Autodesk, QNAP NAS, and Sophos Endpoint Security.
• Configured Cisco and Fortinet firewalls and load balancers, enforcing perimeter security policies, web filtering, and threat controls.
• Orchestrated patch management and system upgrades across network assets, developing test plans to mitigate operational risk.
• Executed automated backup routines to safeguard business-critical data and ensure rapid disaster recovery capability.
• Monitored system uptime, performance, and capacity metrics, authoring actionable infrastructure improvement recommendations.
• Conducted root-cause analysis for complex systems, network, and application failures to implement permanent remediations.
• Managed IT asset procurement, software licensing, vendor maintenance contracts, and asset provisioning.

System and Network Administrator - Technomarine and Cullinan Group Inc. - Pasig City, Philippines

(2011-10 - 2013-07)

• Planned, designed, and documented IT infrastructure covering desktop fleets, servers, network equipment, and storage arrays.
• Managed server backups, software distribution, service patch deployments, and enterprise Microsoft Outlook/Exchange accounts.
• Installed and maintained PABX telephony, biometric access control systems, CCTV servers, and structured cabling projects.

System and Network Support - Asianic Distributors Inc. - Parañaque City, Philippines

(2010-03 - 2011-08)

• Administered enterprise wireless LAN/WAN infrastructure and documented network architecture metrics.
• Prepared systems for Retail Pro and Microsoft Dynamics NAV (Navision) rollouts, supporting external technical consultants during deployment.
• Provided in-house helpdesk support, hardware diagnostics, and component-level repairs for Acer, Lenovo, and HP systems.

Head Technician - R.V. Chanco Computers - Parañaque City, Philippines

(1999-07 - 2010-01)

• Supervised junior technicians on OS deployments, hardware diagnostics, software installations, and network cabling setups.
• Managed POS records, IT asset inventories, procurement logistics, and deployment schedules for business transactions.

Electronics and Computer Technology - Asian College (formerly ACSAT) (1999)