Ronald Montecinos
I'm a Systems Administrator
About
I am a Network and Systems Administrator with 9+ years of experience supporting secure DoD environments. I hold an active TS/SCI clearance with CI Polygraph and specialize in system reliability, security, and infrastructure support. My expertise includes Tier 1–3 support, Microsoft enterprise systems, Active Directory, Cisco networking, and cybersecurity compliance. I’m dedicated to delivering stable, secure, and scalable IT solutions that meet mission-critical needs.
Network & Systems Administrator.
- Phone: (703) 717 1725
- City: Springfield, VA
- Clearance: TS/SCI with Poly
- Degree: Bachelor's
- Email: [email protected]
- Certifications: CompTIA Security+
Summary
Results-driven Network and Computer Systems Administrator with 9+ years of experience supporting classified Department of Defense (DoD) environments. Active TS/SCI clearance with CI Polygraph. Proven expertise in Tier 1–3 help desk support, system configuration, Microsoft Windows enterprise environments, and secure communications infrastructure. Strong working knowledge of Active Directory, Cisco routers/switches, network troubleshooting, and OCONUS support operations. Skilled in maintaining system uptime, resolving incidents, and enforcing compliance with IA/Cybersecurity policies under DOD 8140.
Education
Bachelor of Science in Criminal Justice
2013-2015
Strayer University, Arlington, VA
Associate of Applied Science in Computer & Telecom Technology
2003 - 2005
TESST COllege of Technology, Baltimore, MD
Skills
Systems & Network Administration
- Windows 10 Enterprise
- Server Administration
- Active Directory
- Cisco Routing & Switching
- VPN / DNS / DHCP / TCP/IP
- SIPR/NIPR Systems
Support & Operations
- Windows 10 Enterprise
- Server Administration
- Active Directory
- Cisco Routing & Switching
- VPN / DNS / DHCP / TCP/IP
- SIPR/NIPR Systems
Security & Compliance
- Security Patch Management
- Information Assurance (IA)
- DoD Cybersecurity Standards
Professional Strengths
- Customer Service Excellence
- Clear Communication
- Reliable Incident Resolution
Professional Experience
Network Operations Center (NOC) Technician
April 2024 - Present
CACI - DIA HQ, Arlington, VA
- Provide Tier 1–2 support across a classified enterprise Windows 10 environment.
- Monitor, configure, and troubleshoot network performance using SOPs and diagnostic tools.
- Administer patching, upgrades, and preventive maintenance for routers, switches, and systems.
- Enforce IA/CND policies per NEC and DOD compliance requirements (DODM 8140.01).
- Configure and support Active Directory accounts and permissions across geographically dispersed users.
- Deliver site-specific IT asset support, including deployment, imaging, and lifecycle maintenance
- Serve as the escalation point for unresolved technical issues requiring expert-level resolution.
Systems Administrator
September 2022 - April 2024
Leidos – Pentagon, Arlington, VA
- Administered Windows desktop systems and Active Directory user management.
- Provided onboarding support, including SIPR/NIPR token management and secure account provisioning.
- Supported VTC systems and conducted Tier 2/3 troubleshooting for classified users.
- Ensured secure system configuration, patching, and compliance with DOD cyber standards.
Desktop SUpport Technician
March 2019 - September 2022
Securigence – DARPA, Arlington, VA
- Resolved hardware/software issues and ensured continuity for end users in secure facilities.
- Managed group policy and AD configurations; improved system uptime through proactive troubleshooting.
- Supported printer, scanner, and desktop imaging configurations across DARPA workstations.
IT/Field Support Specialist
June 2013 - February 2019
Brinks, Inc. Springfield, VA
- Maintained internal database systems for transaction tracking and reporting.
- Provided technical support for ATM devices and secure communications systems.
- Supported secure transport infrastructure with embedded IT systems and tracking.
Contact
For any questions or business inquiries, please contact us at below!