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Systems Administrator II with Security Clearance

Seneca Resources, LLCSan Diego, CA🇺🇸United StatesPosted 3 Sept 2026

Why This Role Stands Out

This on-site Systems Administrator II role offers a fantastic opportunity to contribute to a mission-critical defense program, with a competitive salary and a clear path to a permanent position. You'll thrive here if you possess strong Active Directory and security experience and are eager to expand your skills in a secure environment. Don't miss out on the chance to join a reputable organization and advance your career.

Quick Overview

Salary
$75k - $80k/yr
Seniority
Mid Senior
Employment type
Employee
Work mode
On Site
Location
San Diego, CA, United States
Posted
1 week ago
Active DirectoryDNSPKI

Job Description

Role Highlights

Position: Systems Administrator II
Location: San Diego, California - 100% Onsite
Job Type: 6-Month Contract-to-Hire
Pay Rate: Converting to $75,000-$80,000
Clearance Required: Active Secret Role Overview:
This role supports a federal defense client in San Diego, maintaining and supporting the integrity, availability, and performance of IT infrastructure and operating systems across secure environments. You will perform system maintenance, manage identity and access controls, resolve technical issues, and ensure secure system configurations in support of a mission-critical program.

Key Responsibilities

Administer Microsoft Active Directory including ADUC, DNS, GPO, and WSUS to manage accounts, memberships, and group policies across multiple environments
Support Public Key Infrastructure (PKI) credential and token management leveraging DoD certificates for secure authentication and access control
Perform system maintenance tasks including backups, recovery, and file management
Acquire, install, configure, and test system software upgrades and hardware components
Troubleshoot and resolve technical issues across hardware, software, and network systems
Monitor system performance, conduct system testing, and ensure compliance with IT policies including STIG auditing and configuration
Support secure system configurations and maintain VPN, network, and email administration as required
Assist with licensing management, upgrades management, and IT backup procedures Key Requirements:
Active Secret clearance
IAT Level II certification: CySA+, Security+ CE, CCNA Security, GICSP, GSEC, or SSCP
Bachelor's degree in Information Technology, Computer Science, or a related field
3+ years of relevant systems administration experience
Hands-on experience with Active Directory, DNS, GPO, and WSUS
Experience with DISA STIGs and secure system configuration
Proficiency with system backup, recovery, and file management procedures

Preferred Skills

Experience with VPN, network, and email administration
Familiarity with network security software and IT backup tools
Strong troubleshooting and technical support skills in a team-based environment

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