Robert Mudd
Peoria
Summary
System Administrator for a small radiology clinic pivoting to enterprise network engineering/NOC operations. Hands-on with VMware ESXi and Windows Server, managing physical/virtual servers, AD, and core networking. Experienced in ticket-driven workflows, incident triage, and escalation. Strong foundation in routing, switching, VPNs, and firewall concepts; comfortable with monitoring, documentation, and change control. Certified: CompTIA A+, Network+, Security+, and CCNA. Eager to scale skills to high-availability, multi-site environments and 24/7 operations.
Overview
5
5
years of professional experience
1
1
Certification
Work History
System Administrator
Northern Arizona Radiology
Flagstaff
12.2024 - Current
- Administered and supported 40+ Windows workstations and servers (physical and virtual), ensuring high availability and optimal performance.
- Managed Windows Server and Active Directory environment, including user and group administration, Group Policy management, and access control.
- Deployed, configured, and maintained virtualized servers (e.g., Hyper-V/VMware), optimizing resource utilization and scalability.
- Configured and administered 3CX PBX, enhancing call quality and system reliability for improved team productivity.
- Managed SonicWall firewalls through firmware updates, monitoring, and performance tuning to enhance network security.
- Designed, configured, and maintained site-to-site VPNs across multiple locations, ensuring secure and reliable inter-office connectivity.
IT Support Specialist
Northern Arizona Radiolgy
Flagstaff
06.2023 - 12.2024
- Provided Tier 1–2 support for 50+ end users, troubleshooting hardware, Windows, and peripheral issues.
- Resolved incidents efficiently through the ticketing system with thorough triage, troubleshooting, and documentation.
- Escalated complex issues to the MSP with clear diagnostics, replication steps, and logs to speed resolution.
- Used Active Directory to add/remove users, manage group memberships, and reset passwords while enforcing least-privilege access.
- Installed, configured, and updated desktop applications; performed Windows updates, driver installs, and device provisioning/imaging.
- Diagnosed network connectivity issues (Wi‑Fi, Ethernet, VPN), printer faults, and email/client sync errors, reducing repeat tickets.
Team Member
Whataburger
Avondale
12.2021 - 12.2022
- Prepared food items following safety and quality standards.
- Delivered exceptional customer service in fast-paced restaurant environment.
- Handled cash transactions accurately at the register.
- Followed inventory procedures to manage stock levels effectively.
Education
Associate of Science - General Science
Maricopa Community Colleges, Estrella Mountain Community College
Avondale, AZ05-2022
Skills
- Windows server administration
- Active Directory management
- Virtualization technologies
- Firewall management
- VPN configuration
- Network troubleshooting
- VMware esxi configuration
- Cisco CLI
Certification
- CCNA
- Comptia A+
- Comptia Network +
- Comptia Secruity +
Timeline
System Administrator
Northern Arizona Radiology
12.2024 - Current
IT Support Specialist
Northern Arizona Radiolgy
06.2023 - 12.2024
Team Member
Whataburger
12.2021 - 12.2022
Associate of Science - General Science
Maricopa Community Colleges, Estrella Mountain Community College