Systems Administrator

Seneca Resources; San Diego (CA); On-site; USD 121,229,000 - 165,312,000; Full time

Benefits offered by this job

Competitive pay

Comprehensive health coverage

401(k) matching

Dedicated career support

Job summary

Seneca Resources is seeking a Systems Administrator for an on-site role in San Diego, CA. The position involves managing IT infrastructure, cybersecurity, and systems engineering to support critical government operations, including Active Directory and PKI credential management.

Ideal candidates will have 3–5+ years of experience, an Active Secret clearance, and an active IAT II–qualifying certification (Security+, CySA+).

Qualifications

• 100% onsite in San Diego, CA.
• Active Secret clearance.
• Active IAT II–qualifying certification (Security+, CySA+).
• 3–5+ years of Systems Administrator experience.
• Experience with Active Directory, DNS, GPO, WSUS.
• Knowledge of system backup, recovery, and software upgrades.

Responsibilities

• Administer IT infrastructure, cybersecurity, and systems engineering.
• Maintain system integrity and perform software/hardware upgrades.
• Troubleshoot technical issues and ensure optimal system performance.
• Support secure and compliant IT environments, including PKI credentials.

Skills

Active Directory

DNS

GPO

WSUS

Active Secret clearance

IAT II certification

Job description

Position Description

Our client is seeking a dedicated Systems Administrator for an on-site role in San Diego, CA. This position supports critical U.S. Department of Defense and federal agency operations, providing expert management of IT infrastructure, cybersecurity, and systems engineering. As a key team member, you will maintain system integrity, perform software and hardware upgrades, troubleshoot technical issues, and ensure optimal system performance. The role involves administering Active Directory, managing PKI credentials, and supporting secure and compliant IT environments. Ideal candidates will have experience supporting government IT systems and a strong focus on cybersecurity best practices.

Position Title: Systems Administrator

Location: San Diego, CA

Clearance Requirements: None

Pay Rate: $50.00/hr

Top Requirements

• 100% onsite in San Diego, CA
• Active Secret clearance
• Must have an active IAT II–qualifying certification (e.g., Security+, CySA+)
• 3–5+ years of Systems Administrator experience
• Experience with Active Directory, DNS, GPO, WSUS
• Knowledge of system backup, recovery, and software upgrades

About Seneca Resources

At Seneca Resources, we are more than just a staffing and consulting firm — we are your trusted career partner. With offices nationwide and a diverse range of clients, we provide opportunities that propel professionals forward while making an impact.

• competitive pay
• comprehensive health coverage
• 401(k) matching
• dedicated support to help you achieve your career goals

We are committed to fostering an inclusive and diverse workplace where all qualified individuals are encouraged to apply.