Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

Juan Carlos (JC) Marin

Melbourne

Summary

Results-driven Windows System Administrator II with expertise in VMware Horizon, Active Directory, Group Policy, WSUS, and STIG compliance. Skilled in patch management, automation, and system builds across classified and unclassified environments. Recognized for delivering secure, reliable infrastructure and Tier III support in high-security organizations.

Overview

6
6
years of professional experience
1
1
Certification

Work History

Windows System Administrator

Northrop Grumman Aerospace Systems
12.2024 - Current
  • Administer Windows Server 2016–2022, Active Directory, GPOs, and automation with PowerShell.
  • Built and maintained VDI environments in VMware Horizon (Win10/11 pools, App Volumes, entitlements).
  • Drove STIG/SCAP compliance for Windows 10/11 systems, achieving 99%+ certification.
  • Converted T2 to T3 workstations, deployed mission-critical software (ANSYS, Cameo, Eclipse, Visual Studio).
  • Deployed and hardened enterprise VMs: DSI eXpress, ManageEngine ADSelfService, Trellix ePO, eQube MI/BI.
  • Conducted Nessus scans, patch remediation, and zero-day exploit mitigation (SharePoint).
  • Provided Tier III troubleshooting for Linux RDP, Cisco Jabber, VoIP, domain connectivity.
  • Led NGPCN refresh of 100+ machines, including BitLocker recovery and security compliance.

PC NETWORK SUPPORT TECH 3

Northrop Grumman Aerospace Systems
09.2022 - 12.2024
  • Summarized incident resolution for future reference. Maintained network connectivity of workstations, servers and network devices.
  • Maintained smooth operation of multi-user computer systems, including coordination with network, software, and system engineers, project managers, end users, and customer and IT management.
  • Ensured necessary administration tasks were completed and directed others as necessary.
  • Conducted security audits and instituted changes to ensure compliance with security standards.
  • Provided Windows systems management, including backup and recovery services.
  • Conducted troubleshooting and repairs for PC desktops and workstations, printers, peripherals, and related PC software.
  • Administered quality customer service to in-house staff and satisfied concerns

CYBERSECURITY & NETWORK SUPPORT SPECIALIST

Brevard County School Board
02.2022 - 08.2022
  • Performed as a Windows System Administrator for the school district, managing Windows Server OS and domain architecture.
  • Ensured smooth operation of multi-user computer systems, coordinating with network engineers, software engineers, project managers, and customer and IT management.
  • Managed file systems, disk space, and virus protection regularly.
  • Developed and implemented system enhancements, improving performance and reliability.
  • Oversaw software updates and maintained network infrastructure, coordinating with internal and external stakeholders.
  • Adhered to strict Information Systems security guidelines, maintained security audit and logging information.
  • Conducted security audits to identify vulnerabilities

Technical Support Specialist

Eastern Florida State College
07.2021 - 03.2022
  • Provided high-level technical support by resolving inquiries by phone, e-mail and web consistent with department and team service levels and goals.
  • Assisted customers in identifying issues and explained solutions to restore service and functionality.
  • Leveraged tools such as RSAT, PowerShell, Remote Desktop/Assistance, and more to maximize operations efficiency
  • Initiated Test Planning: 1yr development cycle and patch support
  • Conducted configuration of software deployments as needed and supported Windows 7, 10, 2008, 2012, and 2016 platforms while maintaining WDS and computer objects within Active Directory
  • Installed, troubleshot, serviced, and repaired computers, related PC software, telephones, cables, and connectors. I was connecting computers and terminals to existing data networks

TECHNICAL SUPPORT DESK INFORMATION

Eastern Florida State College
08.2019 - 07.2021
  • Assisted customers in identifying issues and explained solutions to restore service and functionality.
  • Documented support interactions for future reference.
  • Used ticketing systems to manage and process support actions and requests.
  • Provided timely, effective end-user support through a ticket queue
  • Managed high levels of call flow and responded to level I technical support needs.
  • Translated complex technical issues into digestible language for non-technical users.

Education

Bachelor of Arts - Interdisciplinary Social Studies

Florida Atlantic University
Boca Raton, FL
01-2010

Associate of Arts - Social Science Education

University of Central Florida
Orlando, FL
01-2008

Skills

  • Windows Server
  • VMware Horizon
  • Active Directory & GPOs
  • WSUS
  • STIG/SCAP
  • Trellix ePO
  • Nessus
  • PowerShell
  • Patch Management
  • Security Hardening
  • Backup & Recovery
  • Tier III Troubleshooting

Certification

CCNA: Introduction to Networks | CompTIA Secure Infrastructure Specialist Certified | CompTIA Security + Certified | CompTIA IT Operations Specialist Certified | CompTIA Network+ Certified |CompTIA A+ Certified

Timeline

Windows System Administrator

Northrop Grumman Aerospace Systems
12.2024 - Current

PC NETWORK SUPPORT TECH 3

Northrop Grumman Aerospace Systems
09.2022 - 12.2024

CYBERSECURITY & NETWORK SUPPORT SPECIALIST

Brevard County School Board
02.2022 - 08.2022

Technical Support Specialist

Eastern Florida State College
07.2021 - 03.2022

TECHNICAL SUPPORT DESK INFORMATION

Eastern Florida State College
08.2019 - 07.2021

Bachelor of Arts - Interdisciplinary Social Studies

Florida Atlantic University

Associate of Arts - Social Science Education

University of Central Florida

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