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National Defense Security Jobs in California

national defense security California

Viewing 1 - 20 of 1,427

National Defense Security Jobs in California requiring security clearance

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Cyber Risk Analyst

Highbury Defense Group
San Diego, CA(On/Off-Site)
Posted over 6 months ago
Secret

Description As a Cyber Risk Analyst on our team, you’ll use your experience to work with Navy programs to identify their cyber risks, conduct cyber security audit across PEO C4I systems, understand ap...

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Systems Engineering and T&E Support

Highbury Defense Group
San Diego, CA(On/Off-Site)
Posted 3 months ago
5+ yrs exp
Unspecified

This position requires active U.S. national security clearance and the ability to obtain one. To learn more about the security clearance process please access this link. Additionally, travel may be re...

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Cyber Security RMF Support

KBR
El Segundo, CA(On-Site/Office)
Posted 3 weeks ago
Secret
Not Specified

Title:Cyber Security RMF Support Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelli...

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Sr. Cybersecurity Architect

New
Aerospace Corporation
Apply today! Be one of the first candidates to apply for maximum exposure.
El Segundo, CA(On-Site/Office)
Posted 1 day ago
TS/SCI
Not Specified

The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded researc...

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Financial Analyst (ISG)

Seneca Holdings
Monterey, CA(On-Site/Office)
Posted 2 weeks ago
Secret
Not Specified

Great Hill Solutions is part of the Seneca Nation Group (SNG) portfolio of companies. SNG is the federal government contracting business wholly owned by the Seneca Nation . SNG meets mission-critical ...

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Executive Assistant

BTAS, Inc.
El Segundo, CA(On-Site/Office)
Posted 1 month ago
Top Secret
Not Specified

POSITION: Executive Assistant LOCATION: El Segundo, CA REQUIRED SECURITY CLEARANCE: Active TS with SCI eligibility POSITION TYPE/STANDARD WORK HOURS: Full time, 40 hours THE OPPORTUNITY: Upon aw...

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Emergency Management Specialist - Federal Coordinating Center Su

Watermark Risk Management International, LLC
Norco, CA(On-Site/Office)
Posted 1 month ago
Secret
Not Specified

Come make your mark with Watermark! 🎖 FOUNDED BY USAF VETERANS in 2007, we are proud to be a Service-Disabled Veteran Owned Small Business. 🌎 SUBJECT MATTER EXPERTS specializ...

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Emergency Management Specialist - Federal Coordinating Center Su

Watermark Risk Management International, LLC
San Diego, CA(On-Site/Office)
Posted 1 month ago
Secret
Not Specified

Come make your mark with Watermark! 🎖 FOUNDED BY USAF VETERANS in 2007, we are proud to be a Service-Disabled Veteran Owned Small Business. 🌎 SUBJECT MATTER EXPERTS specializ...

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Atmospheric, Earth & Energy Undergraduate Intern - Summer 2026

Lawrence Livermore National Laboratory
Livermore, CA(On-Site/Office)
Posted 3 weeks ago
DoE Q or L
Not Specified

Company Description Join us and make YOUR mark on the World!Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthe...

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Sr. Communication Systems Engineer

New
Aerospace Corporation
Apply today! Be one of the first candidates to apply for maximum exposure.
El Segundo, CA(On-Site/Office)
Posted 1 day ago
TS/SCI
Not Specified

The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded researc...

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Sr. Acquisition and Systems Engineer

New
Aerospace Corporation
Apply today! Be one of the first candidates to apply for maximum exposure.
El Segundo, CA(On-Site/Office)
Posted 1 day ago
TS/SCI
Not Specified

The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded researc...

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Cyber Defense Analyst

Integral Federal
Monterey, CA(On-Site/Office)
Posted 4 months ago
Secret
Not Specified

Overview The Cyber Defense Analyst is responsible for using data collected from various cyber defense tools (e.g., IDS alerts, firewalls, network traffic logs) to analyze events within their environm...

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Facility Manager

BTAS, Inc.
El Segundo, CA(On-Site/Office)
Posted over 6 months ago
Top Secret
CI Polygraph

POSITION: Facility Manager LOCATION: El Segundo, CA REQUIRED SECURITY CLEARANCE: Active TS with SCI eligibility; willing to take a CI polygraph POSITION TYPE/STANDARD WORK HOURS: Full time, 40 hour...

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Facility Manager

BTAS, Inc.
El Segundo, CA(On-Site/Office)
Posted over 6 months ago
Top Secret
CI Polygraph

POSITION: Facility Manager LOCATION: El Segundo, CA REQUIRED SECURITY CLEARANCE: Active TS with SCI eligibility; willing to take a CI polygraph POSITION TYPE/STANDARD WORK HOURS: Full time, 40 hour...

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Director, Business Development

KBR
Colorado Springs, CO(On-Site/Office)
El Segundo, CA(On-Site/Office)
Posted 2 months ago
Top Secret
Not Specified

Title:Director, Business Development Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the int...

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Executive Administrator

BTAS, Inc.
El Segundo, CA(On-Site/Office)
Posted over 6 months ago
Secret
Not Specified

POSITION: Executive Administrator LOCATION: El Segundo, CA REQUIRED SECURITY CLEARANCE: Secret POSITION TYPE/STANDARD WORK HOURS: Full time, 40 hours THE OPPORTUNITY: Upon award, BTAS will be fi...

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Support Services

BTAS, Inc.
El Segundo, CA(On-Site/Office)
Posted over 6 months ago
Secret
Not Specified

POSITION: Support Services LOCATION: El Segundo, CA REQUIRED SECURITY CLEARANCE: Secret POSITION TYPE/STANDARD WORK HOURS: Full time, 40 hours THE OPPORTUNITY: Upon award, BTAS will be filling...

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Biosciences and Biotechnology Division Undergraduate Intern - Su

Lawrence Livermore National Laboratory
Livermore, CA(On-Site/Office)
Posted 3 weeks ago
DoE Q or L
Not Specified

Company Description Join us and make YOUR mark on the World!Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthe...

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Networks/IT Manager

BTAS, Inc.
El Segundo, CA(On-Site/Office)
Posted over 6 months ago
Top Secret
CI Polygraph

POSITION: Networks/IT Manager LOCATION: El Segundo, Ca REQUIRED SECURITY CLEARANCE: Active TS with SCI eligibility; willing to take a CI polygraph POSITION TYPE/STANDARD WORK HOURS: Full time, 40 h...

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Sr FPGA Firmware Engineer

New
Sierra Nevada Corporation
Apply today! Be one of the first candidates to apply for maximum exposure.
Folsom, CA(On-Site/Office)
Posted today
Secret
Not Specified

Are you ready to unleash your technical creativity? Dream, Innovate, Inspire and Empower the next generation to transform humanity through technology and imagination! Firmware engineers at Sierra Neva...

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