Open to opportunities

Michael Castle

@michaelcastle

IT operations manager at University of Mississippi Medical Center, directing field support and end-user device lifecycle operations in healthcare.

United States

Message

At University of Mississippi Medical Center, I manage field support operations for the Greenwood area, directing IT support analysts and coordinating technology changes across assigned facilities. I also oversee end-user device lifecycle processes and vendor performance.

Previously, at Greenwood Leflore Hospital, I collaborated with executive and medical leadership on IT direction and oversaw healthcare platforms including EMR, RIS, PACS, and LIS. I also led the migration from legacy on-premises Microsoft Exchange to Exchange Online and coordinated infrastructure and cybersecurity work.

Experience

Work history, roles, and key accomplishments

Current

Manager, Field Support

Current

University of Mississippi Medical Center

Aug 2026 - Present (2 months)

Manage field support operations for the Greenwood area, directing IT support analysts providing Tier 2 support for end-user computing devices. Oversee asset lifecycle, vendor management, and development of standard operating procedures.

IT Operations Field Support End User Computing Asset Lifecycle Management Vendor Management SOP Development Team Leadership Budget Planning

Director of Information Services

Greenwood Leflore Hospital

Jan 2024 - Jul 2026 (2 years 6 months)

Collaborated with executive and medical leadership to establish strategic IT direction. Oversaw selection, acquisition, and implementation of major healthcare IT platforms including EMR, RIS, PACS, and LIS.

Healthcare IT Strategic Planning EMR RIS PACS LIS Leadership Vendor Management

Network Manager / Administrator

Greenwood Leflore Hospital

Jan 2014 - Jul 2026 (12 years 6 months)

Designed and optimized server and network infrastructure, including virtualization, storage, and backup systems. Managed cybersecurity operations including firewalls, EDR, MFA, and penetration testing coordination.

VMWare SAN NAS Enterprise Backups Cisco Networking Firewalls VPN MFA EDR Vulnerability Management Penetration Testing Active Directory DNS DHCP Citrix Exchange

Technical Services Manager

Greenwood Leflore Hospital

Jan 2007 - Jul 2026 (19 years 6 months)

Managed technical services team supporting a 208-bed hospital and 22 specialty clinics. Developed policies for disaster recovery, business continuity, HIPAA compliance, and network security; led Microsoft 365 migration.

Microsoft 365 Exchange Online Disaster Recovery HIPAA Network Security Team Management Vendor Management

Systems Engineer

Greenwood Leflore Hospital

Jan 2005 - Dec 2007 (2 years 11 months)

Delivered end-user support and infrastructure administration, including Active Directory management, endpoint patching, system hardening, and desktop imaging.

Active Directory Endpoint Patching Lifecycle System Hardening Desktop Imaging Access Management

Systems Engineer / Computer Instructor

Greenville Higher Education Center

Jan 2002 - Dec 2005 (3 years 11 months)

Planned and executed IT upgrades, administered firewalls, endpoint protection, DNS, DHCP, email and file services. Delivered workforce training in Microsoft Office, PC hardware troubleshooting, and cybersecurity.

Firewalls Endpoint Protection DNS DHCP Email Services File Services PC Setup and Imaging Training Microsoft Office Cybersecurity

Web Designer

Delta State University

Jan 2000 - Dec 2002 (2 years 11 months)

Designed, built, and maintained the university's official website and departmental sites. Developed custom web applications and trained faculty and staff in web content management.

Web Design Web Development Content Management Training