Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

Xavier Rubio

Pace,FL

Summary

Experienced System Administrator with 15 years of experience in secure, mission-critical environments. Holds an active Top Secret clearance, with expertise in Windows/Linux systems, network administration, and virtualization. Demonstrates strong skills in ITSM workflows and DoD compliance, enhancing team operations in high-pressure situations. Known for leading initiatives that streamline operations and improve efficiency.

Overview

18
18
years of professional experience
3
3

Certifications

Work History

Cyber Systems Watch Officer

ASRC Federal
Pensacola, FL
05.2025 - Current
  • Monitored systems and networks using tools such as Zabbix, Cisco Firepower Management Center (FMC), and Splunk to identify and respond to security events and operational issues in real time.
  • Collaborated with interagency partners and external government organizations to investigate and resolve cybersecurity and infrastructure-related incidents, ensuring mission continuity and timely resolution.
  • Utilized the ITSM ticketing system to create, track, update, and close incidents, changes, and service request tickets, maintaining full lifecycle documentation for compliance and performance metrics.
  • Coordinated with system admin teams to schedule and manage mission-critical maintenance, including planned and emergency outages; ensured all stakeholders were informed, services were restored, and documentation was completed.

Client Systems Technician

U.S. Air Force National Guard
Brunswick, GA
01.2010 - Current
  • Administered and maintained Windows-based systems, including installation, configuration, patch management, and performance tuning, in compliance with DoD cybersecurity standards.
  • Managed Active Directory environments, including user account provisioning, group policy implementation, and OU structure maintenance across multiple domains.
  • Deploy, configure, and repair network infrastructure devices, including switches, routers, and tactical communication equipment such as AN/PRC radios and SATCOM terminals, to ensure secure and resilient operations in both garrison and austere, forward-deployed environments.
  • Provided Tier I and Tier II technical support to unit-wide users, diagnosing and resolving hardware, software, and network-related issues to ensure mission continuity.

System Administrator

Criterion Systems
Pensacola, FL
03.2021 - 04.2025
  • Delivered monitoring, discovery, and event correlation support across enterprise federal environments using Micro Focus ITOM suite, ensuring system uptime and compliance with federal standards.
  • Configured monitors in SiteScope for critical infrastructure components, integrating alerts into OBM for continuous operations.
  • Administered Network Node Manager i (NNMi) for fault and performance monitoring, identifying root causes of outages and degradation.
  • Developed and maintained uCMDB service models and CI relationships through Universal Discovery.
  • Managed event monitoring in Operations Bridge Manager (OBM), reducing alert fatigue by 30% with smart filtering rules.
  • Logged and updated ITSM tasks related to monitoring configuration and event resolution using ServiceNow.
  • Utilized Jira for Agile task tracking and sprint planning, collaborating with development and operations teams to meet infrastructure objectives.
  • Maintained comprehensive documentation in Confluence, including SOPs, CI discovery guides, and event flow diagrams for engineering teams.

Alternate Senior Watch Officer

Criterion Systems
Pensacola, FL
10.2016 - 03.2021
  • Directed day-to-day IT operations as Day Shift Lead, overseeing incident response, task delegation, and shift transitions to maintain 24/7 system availability, and support continuity.
  • Administered tickets and change workflows through ServiceNow and Altiris Service Desk, ensuring timely resolution of incidents and proper documentation.
  • Monitored enterprise infrastructure using Micro Focus Operations Bridge Manager (OBM), performing health checks, event correlation, and proactive alert analysis.
  • Created and updated operational documentation and SOPs in Confluence, enhancing knowledge transfer and onboarding efficiency for new team members.
  • Provided technical mentorship to junior administrators and analysts, promoting best practices in system health monitoring, incident response, and service desk operations.
  • Collaborated with engineering teams on long-term solutions and infrastructure upgrades, supporting lifecycle management, and contributing to architecture discussions.

Voice Network Systems

U.S. Air Force National Guard
Brunswick, GA
03.2007 - 01.2010
  • Installed, configured, and supported Voice over IP (VoIP) systems using Cisco Unified Communications Manager in NIPR and SIPR environments.
  • Supported mobile and tactical voice systems for remote and temporary deployments, ensuring reliable communications in high-demand environments.
  • Monitored Cisco hardware, improving system efficiency, and reducing downtime.

Education

Associate of Science - Information Systems Technology

Community College of The Air Force
Montgomery, AL
01-2013

Bachelor of Arts - Business Administration

Columbia College
Columbia, MO
10-2012

Skills

  • JIRA
  • Linux
  • Cisco Call Manager
  • ITSM ServiceNow
  • Active Directory
  • Agile methodologies
  • SiteScope
  • NNMi
  • UCMDb
  • OBM
  • Splunk
  • AWS
  • Cisco Firepower
  • Cisco Routing and Switching

Certification

  • CompTIA A+
  • CompTIA Network +
  • Comptia Security +

Timeline

Cyber Systems Watch Officer

ASRC Federal
05.2025 - Current

System Administrator

Criterion Systems
03.2021 - 04.2025

Alternate Senior Watch Officer

Criterion Systems
10.2016 - 03.2021

Client Systems Technician

U.S. Air Force National Guard
01.2010 - Current

Voice Network Systems

U.S. Air Force National Guard
03.2007 - 01.2010

Associate of Science - Information Systems Technology

Community College of The Air Force

Bachelor of Arts - Business Administration

Columbia College

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