Edward Ozuna
@edwardozuna
Senior Systems Administrator and infrastructure engineer focused on secure, always-on enterprise platforms.
United StatesWhat I'm looking for
I’m a results-driven Senior Systems Administrator with 15+ years supporting and engineering enterprise infrastructure across financial services, aerospace, healthcare, and managed services. I specialize in Windows Server, Active Directory, Group Policy, Citrix, VMware, SQL Server, IIS, and cloud platforms like Azure and AWS—paired with PowerShell automation to streamline operations.
I’ve led infrastructure modernization efforts that strengthened security posture and improved system reliability with minimal downtime, including reducing unauthorized access attempts by more than 50% through security hardening and Group Policy enhancements. From zero unplanned downtime Windows Server and Citrix migrations to SQL Server/IIS performance tuning and ITIL-based service management, I consistently deliver business-critical solutions while maintaining service availability.
Experience
Work history, roles, and key accomplishments
Administered enterprise Windows Server infrastructure for critical banking operations, managing Active Directory, Group Policy, and identity/access controls. Led Windows Server and Citrix migration/modernization initiatives with zero unplanned downtime and strengthened security posture by reducing unauthorized access attempts by 50%+.
Provided Tier III infrastructure and application support across enterprise Windows and Citrix environments for Boeing. Automated operational workflows with PowerShell and supported SQL Server/IIS patching, troubleshooting, and performance tuning while meeting service-level objectives.
Managed enterprise Citrix XenApp/XenDesktop and VMware virtualization infrastructure supporting large-scale user communities. Led server migration and modernization projects with zero unplanned downtime while implementing security hardening and optimizing SQL Server performance, scalability, and reliability.
IT Operations Manager
Elizabeth Seton Pediatric Center
Sep 2008 - Sep 2015 (7 years)
Directed IT operations for 500+ end users, managing desktop, server, application, and network support functions. Implemented ITIL-based service management processes and improved response/resolution times through documentation and training for support staff.
Education
Degrees, certifications, and relevant coursework
Louis D. Brandeis High School
High School Diploma, High School
Earned a High School Diploma from Louis D. Brandeis High School.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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