Systems Administrator Senior

Leidos; Oceanside (CA); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos in Camp Pendleton, CA is seeking a System Administrator Senior to join the SMIT program. The role coordinates operational support and implementation for LAN, BAN, and WAN across heterogeneous platforms, and helps shape tactical and strategic direction of the organization’s mission-critical networks.

You will work with government counterparts to ensure secure, reliable network operations, lead evaluations of new technologies, and participate in planning and design reviews.

Qualifications

• Bachelor’s Degree in Computer Science, MIS, Business or related field with 10 years of relevant experience.
• US Citizen with an active DoD Top-Secret/SCI security clearance.
• Specialized experience in performance and configuration of networks; integration and test of complex large-scale computer networks.
• Security+ certification.
• Operating System (OS)/Application Certification.

Responsibilities

• Research, analyze, and recommend new operational support technologies, tools, and techniques.
• Coach others on the application of new operational support technologies.
• Review distributed computing and network designs to select appropriate operational support strategies and ensure efficient use of resources.
• Conduct system support design and performance evaluation reviews.
• Identify, develop, and update operational support standards and procedures.
• Participate with corporate strategic planning teams.
• Keep abreast of emerging operational support technologies and industry trends.
• Recommend price/performance improvement opportunities.

Skills

Security clearance (Top-Secret/SCI)

Education

Bachelor’s Degree in Computer Science, MIS, Business or related field

Job description

Description

Leidos is looking to hire a System Administrator Senior in Camp Pendleton, CA to join our SMIT program. The qualified candidate will coordinate the operational support and implementation activities for Local Area Network (LAN), Base Area Network (BAN), and Wide Area Network (WAN) service offerings encompassing heterogeneous platforms. The Systems Administrator Senior will also assist the government in determining tactical and strategic direction of the organization as it relates to emerging operational support technologies.

Description

Leidos is looking to hire a System Administrator Senior in Camp Pendleton, CA to join our SMIT program. The qualified candidate will coordinate the operational support and implementation activities for Local Area Network (LAN), Base Area Network (BAN), and Wide Area Network (WAN) service offerings encompassing heterogeneous platforms. The Systems Administrator Senior will also assist the government in determining tactical and strategic direction of the organization as it relates to emerging operational support technologies.

SMIT is the largest IT services program for the Navy. Under the Service Management, Integration, and Transport portion of NGEN-R, the Leidos team will deliver the core backbone of the Navy-Marine Corps Intranet, including cybersecurity services, network operations, service desk, and data transport. Ultimately, Leidos will support the Navy in unifying its shore-based networks and data management to improve capability and service.

Primary Responsibilities Include But Are Not Limited To

• Research, analyze, and recommend new operational support technologies, tools, and techniques.


• Coach others on the application of new operational support technologies.


• Review distributed computing and network designs to select appropriate operational support strategies and ensure efficient use of resources.


• Conduct system support design and performance evaluation reviews.


• Identify, develop, and update operational support standards and procedures.


• Participate with corporate strategic planning teams.


• Keep abreast of emerging operational support technologies and industry trends.


• Recommend price/performance improvement opportunities.

Basic Qualifications

• Bachelor’s Degree in Computer Science, MIS, Business or related field and 10 years of relevant experience. Additional experience may be substituted in lieu of degree.


• US Citizen with an active DoD Top-Secret/SCI security clearance


• Specialized experience in the performance and configuration of networks as well as the integration and test of complex large-scale computer integrated networks.


• Must possess a Security+ certification


• Must possess an Operating System (OS)/Application Certification.

NGEN

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting

October 29, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range

Pay Range $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay And Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [e-mail].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.