Information System Administrator

Jobtailor; Thousand Oaks (CA); On-site; USD 120,000 - 155,000; Full time

Job summary

Jobtailor is seeking a seasoned IT Systems Administrator in Thousand Oaks, CA to securely manage classified systems and hybrid server environments. You will ensure compliance with DCSA, DoD, and IC cybersecurity requirements while maintaining storage, networking, and desktop support across the full lifecycle.

The role requires a Secret clearance with ability to pursue TS/SCI, DoD directives, and RMF/NIST frameworks.

Qualifications

• Bachelor’s degree or equivalent experience in a related field.
• 5+ years in system administration within classified or government environments.
• Strong expertise in Windows Server, Active Directory, virtualization, enterprise storage, and Cisco networking technologies.
• Experience with cybersecurity frameworks and compliance (RMF, NIST 800‑53, DoD/IC directives).
• Knowledge of network security, firewalls, IDS/IPS tools, and vulnerability management practices.
• Familiarity with enterprise monitoring, patching, backup/recovery, and ITIL‑based operations.
• DoD 8140 IAT Level II certification (Security+ or higher) required; scripting and Linux experience preferred.
• Active Secret clearance required with ability to obtain TS/SCI and CI Poly; U.S. citizenship required.

Responsibilities

• Administer and secure classified IT systems across their full lifecycle, ensuring compliance with DCSA, DoD, and IC cybersecurity requirements.
• Manage hybrid server environments (Windows/Linux), including Active Directory, DNS/DHCP, virtualization (VMware/Hyper‑V), and system patching.
• Oversee storage and backup infrastructure (Dell EMC Unity, enterprise backup platforms), ensuring data integrity and availability.
• Maintain and support network infrastructure, including Cisco routers/switches, LAN/WAN architecture, and secure communications.
• Support desktop/client environments, including system imaging, software deployment, upgrades, and user administration.
• Troubleshoot and resolve complex infrastructure issues across servers, networks, and endpoints beyond Tier 2 support.

Skills

Windows Server

Active Directory

Virtualization

Enterprise storage

Cisco networking

Network security

Firewalls

IDS/IPS

Vulnerability management

ITIL

Scripting

Linux

RMF

NIST 800-53

DoD/IC directives

Education

Bachelor’s degree or equivalent experience

DoD 8140 IAT Level II certification

Security+ or higher

Job description

Responsibilities

• Administer and secure classified IT systems across their full lifecycle, ensuring compliance with DCSA, DoD, and IC cybersecurity requirements.
• Manage hybrid server environments (Windows/Linux), including Active Directory, DNS/DHCP, virtualization (VMware/Hyper‑V), and system patching.
• Oversee storage and backup infrastructure (Dell EMC Unity, enterprise backup platforms), ensuring data integrity and availability.
• Maintain and support network infrastructure, including Cisco routers/switches, LAN/WAN architecture, and secure communications.
• Support desktop/client environments, including system imaging, software deployment, upgrades, and user administration.
• Troubleshoot and resolve complex infrastructure issues across servers, networks, and endpoints beyond Tier 2 support.

Requirements

• Bachelor’s degree (or equivalent experience) with 5+ years in system administration within classified or government environments.
• Strong expertise in Windows Server, Active Directory, virtualization, enterprise storage, and Cisco networking technologies.
• Experience with cybersecurity frameworks and compliance (RMF, NIST 800‑53, DoD/IC directives).
• Knowledge of network security, firewalls, IDS/IPS tools, and vulnerability management practices.
• Familiarity with enterprise monitoring, patching, backup/recovery, and ITIL‑based operations.
• DoD 8140 IAT Level II certification (Security+ or higher) required; scripting and Linux experience preferred.
• Active Secret clearance required with ability to obtain TS/SCI and CI Poly; U.S. citizenship required.