Summary
Overview
Work History
Education
Skills
Accomplishments
Certification
Timeline
Generic

Collin Malizzi

Omaha

Summary

Professional system administrator with expertise in managing complex IT environments. Adept at ensuring system availability, performance, and security while supporting team collaboration and achieving results. Skilled in network management, server maintenance, and troubleshooting. Reliable, adaptable, and focused on delivering impactful solutions.

Overview

5
5
years of professional experience
1
1
Certification

Work History

Sr. System Administrator (GS-12-2210)

Nebraska Army National Guard
10.2024 - Current
  • Maintain 50+ Linux and Windows servers statewide including software patching and hardware upkeep.
  • Implement CVE mitigation strategies, conduct vulnerability scans using Nessus, and apply quarterly STIGs.
  • Administer VMware vSphere and KVM for virtualized infrastructure; migrate data centers and deploy new cloud-based storage.
  • Reduced downtime with proactive system monitoring and timely issue resolution.
  • Monitor network security using Security Onion; troubleshoot shared drives, JACE servers, and RADIUS services.
  • Managed vendor relationships for procurement of hardware and software, negotiating favorable terms and cost savings.
  • Implemented robust data backup solutions, ensuring business continuity in the event of data loss or system failure.

Information Technology Specialist (25B)

Nebraska Army National Guard
10.2020 - Current
  • Provided network, VoIP, and desktop support
  • Used ticketing systems to manage and process support actions and requests.
  • Diagnosed and resolved hardware and software issues.
  • Configured routers/switches, maintained LAN infrastructure, and supported tactical communications.
  • Liaised with vendors (e.g., Dell) for equipment maintenance and replacement.
  • Supported secure operations through policy enforcement and data assurance procedures.
  • Conducted regular cybersecurity training sessions for employees, reducing the risk of data breaches and phishing attacks.

Windows Administrator / Engineer

Peraton – USSTRATCOM
12.2023 - 10.2024
  • Managed over 3,000 assets across NIPR, SIPR, and TS networks; provided Tier 3 support.
  • Implemented firewall policies with McAfee/Trillex on remote jump servers; mitigated external threats.
  • Maintained VMware vSphere, IDRAC, and Blade systems for enterprise deployment and server uptime.
  • Performed security compliance reviews, implemented ASIs, and maintained SCEP for certificate validation.
  • Used Forescout for MAC authentication and endpoint policy enforcement.
  • Managed WYSE management console for NIPR, SIPR, and TS implementing new certificates to thin clients, and troubleshooting 802.1x authentication.
  • Created new groups in WYSE and Teradici to allow for policy changes and testing for 5070's and 7030's.
  • Maintained current knowledge of industry trends through continuous education opportunities such as conferences, workshops, webinars, or self-directed learning activities relevant to Windows administration roles responsibilities.
  • Migrated legacy systems to updated platforms, minimizing disruption to business operations and endusers.

IT Service Desk

Hamaya Group LLC – Bank of the West
10.2022 - 10.2023
  • Provided Tier 1 and Tier 2 IT support; imaged workstations and handled OS upgrades.
  • Used Active Directory to manage user accounts, groups, and OUs.
  • Resolved issues in Microsoft Outlook and mobile device management (iOS, Android).
  • Launched initiatives for service delivery programs to sell IT service desk contracts.
  • Assisted in the development of IT service desk policies, ensuring compliance with industry standards and regulations while maintaining a focus on providing excellent customer service.

Education

B.S. - Cybersecurity

Bellevue University
Bellevue, NE
06.2025

Skills

  • Active Directory management
  • Windows administration
  • System upgrades
  • Program installations
  • Troubleshooting
  • System updates
  • Backup and recovery
  • Infrastructure planning
  • Disaster recovery planning
  • Desktop troubleshooting
  • Vendor coordination

Accomplishments

  • Achieved Comptia Sec + Certificate
  • Documented and resolved STIG requirements on unclassified, secret, and top secret devices which led to all finding to be resolved and risk mitigated.
  • Used Microsoft Excel to develop inventory tracking spreadsheets and complex documentation for all servers on the network.

Certification

  • CompTIA Security+ (CE)
  • CISCO: Intro to Networks – 120 Hours
  • CISCO: Routing and Switching Essentials – 120 Hours
  • DoD Cyber Awareness Challenge Exam

Timeline

Sr. System Administrator (GS-12-2210)

Nebraska Army National Guard
10.2024 - Current

Windows Administrator / Engineer

Peraton – USSTRATCOM
12.2023 - 10.2024

IT Service Desk

Hamaya Group LLC – Bank of the West
10.2022 - 10.2023

Information Technology Specialist (25B)

Nebraska Army National Guard
10.2020 - Current

B.S. - Cybersecurity

Bellevue University

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Collin Malizzi