Joaquin - Systems Infrastructure Engineer

Experiencia demostrada en VMware vSphere/ESXi.

Experiencia demostrada en Windows Server.

Experiencia demostrada en Active Directory.

Experiencia demostrada en Microsoft 365.

Experiencia demostrada en Linux.

Support 24/7 critical operations across 200+ Windows and Linux servers for 500 to 1,000 users, with full production-support rotations.. Migrated an enterprise SCCM platform without service interruption or data loss, moving 24 distribution points, 62 device collections, 22 applications, security policies and 761+ clients.. Administer VMware vSphere and vSAN, including host maintenance and hardware replacement across an 8-host cluster without service impact; used PowerCLI and backup data to inventory 231 virtual machines and verify protection of 148 production workloads.. Coordinated cross-site tape-library and backup-platform changes involving physical media handling, logical reconfiguration and post-change validation.. Ran Exchange hybrid and Microsoft 365 operations alongside on-premises identity, and led root-cause analysis of a high-volume mail-security incident across network, proxy, messaging and cloud layers.. Migrated Network Policy Server services for enterprise Wi-Fi authentication and migrated Nagios from CentOS 6 to RHEL 9 without vendor documentation.. Designed infrastructure for a smart-meter AMI Head End System with Oracle 19, supporting distributed field devices reporting into central services.. Built PowerShell workflows for inventory, validation, monitoring and incident analysis used daily by the team.

Rotated through Cybersecurity and Infrastructure before conversion to full-time employment.. Supported monitoring, administration and documentation in an operational utility environment.