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Freddy Madrigal Castillo
Looking for a jobWindows OS Engineer
Windows OS Engineer at 8base (Archie Labs) who restored secure WinRM access with zero unplanned downtime.
Costa RicaWindows OS Engineer at 8base (Archie Labs)
Experience
Windows OS Engineer
Detected and renewed expired WinRM HTTPS certificates across the Windows Server fleet with zero unplanned downtime. Engineered multi-cloud FSLogix profile redirection and automated Active Directory attribute management with PowerShell.
Windows ServerWinRMCertificatesFsLogixAzure Virtual DesktopGoogle Cloud PlatformPowerShellActive DirectoryGitInfrastructure as Code
Technical Support Engineer
Resolved deep-level Windows performance issues using Sysinternals, Performance Monitor, and memory dump analysis. Diagnosed IIS service failures and delivered expert guidance on high-performing Windows experiences.
Windows ServerSysinternalsPerformance MonitorIISPowerShellAzureHyper VVMWareMicrosoft Copilot
Data Center Engineer
Performed server patching with Tanium for a mission-critical 24/7 trading platform. Led incident response bridges for Sev 1-3 events and documented technical timelines for post-incident reviews.
TaniumWindows ServerIncident ManagementHigh AvailabilityMonitoringStakeholder Communication
Sr. Technical Support Engineer
Embedded within Microsoft's Windows Performance organization, built PowerShell scripts to automate diagnostic data capture during high-CPU events. Recognized for performance and technical depth, leading to conversion to a direct Microsoft role.
PowerShellWindowsDiagnosticsAutomation
SAP Basis Administrator
Performed maintenance, monitoring, and version upgrades for SAP and HANA environments. Managed high-severity ServiceNow tickets and served as Team Lead during critical operations.
SAP BASISHanaServiceNowIncident ManagementTeam Leadership
Sr. System Administrator
Administered Windows servers, Active Directory, and vCenter/ESXi across multiple countries. Automated Active Directory user provisioning with PowerShell and resolved critical capacity constraints by recycling decommissioned servers.
Windows ServerActive DirectoryGroup PolicyVMWareVCenterVMware ESXiDNSDHCPPowerShellLinux
Service Desk Engineer
Delivered technical support for end users in a global manufacturing environment. Managed ServiceNow incidents and administered Cisco Call Manager, Unity, and Unified Intelligence Center.
Active DirectoryMicrosoft OfficeExchangeSkype For BusinessServiceNowCisco Call ManagerCisco Unity ConnectionRemote Support
Education
Universidad Latina de Costa Rica
Bachelor's Degree in Systems Engineering from Universidad Latina de Costa Rica, completed in 2016.
Bachelor's Degree in Systems Engineering from Universidad Latina de Costa Rica, completed in 2016.
CENFOTEC
Training in Cloud & Virtualization Concepts, Network Virtualization Concepts, and Software Defined Storage Concepts in VMware virtualization environments.