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Security Clearance Jobs in California

California

Viewing 1 - 20 of 4,935

Jobs in California requiring security clearance

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Director of Semiconductor Manufacturing Operations

New
RTX
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Goleta, CA(On-Site/Office)
Posted today
Secret
Not Specified

Date Posted:2026-01-16Country:United States of AmericaLocation:US-CA-GOLETA-B01 ~ 6825 Cortona Dr ~ BLDG B01Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The...

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CVN Maintenance Project Manager

New
Serco Inc.
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CA(On-Site/Office)
Posted today
Secret
CI Polygraph

Position Description & QualificationsWe're seeking a dynamic and experienced Project Manager to join Serco's Naval Acquisition and Sustainment Operation (NASO). A successful candidate will assume a cr...

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Engineering Product Support Analyst- Port Hueneme, CA

New
Serco Inc.
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Los Angeles, CA(On-Site/Office)
Posted today
Secret
Not Specified

Position Description & QualificationsAre you looking for an opportunity to contribute to the Navy's surface ship readiness? At Serco, we are looking for the brightest, most innovative, and driven with...

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Senior Mechanical Engineer - Structural Engineer

New
RTX
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El Dorado Hills, CA(On-Site/Office)
Posted today
Secret
Not Specified

Date Posted:2026-01-16Country:United States of AmericaLocation:US-CA-EL DORADO HILLS-105 ~ 5180 E Golden Foothill Pkwy ~ GOLDEN FOOTHILL, Ste 200Position Role Type:Onsite U.S. Citizen, U.S. Person, or...

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Senior Systems Engineer

New
RTX
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Fullerton, CA(On-Site/Office)
Posted today
Secret
Not Specified

Date Posted:2026-01-16Country:United States of AmericaLocation:US-CA-FULLERTON-676 ~ 1801 Hughes Dr ~ BLDG 676Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: A...

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Senior Radar Systems Engineer - Production

New
RTX
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Fullerton, CA(On-Site/Office)
Posted today
Secret
Not Specified

Date Posted:2026-01-16Country:United States of AmericaLocation:US-CA-FULLERTON-676 ~ 1801 Hughes Dr ~ BLDG 676Position Role Type:Unspecified U.S. Citizen, U.S. Person, or Immigration Status Requiremen...

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Mechanical Engineer II - Structural Engineer

New
RTX
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El Dorado Hills, CA(On-Site/Office)
Posted today
Secret
Not Specified

Date Posted:2026-01-16Country:United States of AmericaLocation:US-CA-EL DORADO HILLS-105 ~ 5180 E Golden Foothill Pkwy ~ GOLDEN FOOTHILL, Ste 200Position Role Type:Onsite U.S. Citizen, U.S. Person, or...

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Operational Health Information Technologies Systems Instructor

New
Goldbelt Inc
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Dublin, CA(On-Site/Office)
Posted today
Secret
Not Specified

OverviewGlobal in service but local in approach, Nisga'a Tek is committed to high-quality service to those who defend us. Nisga'a Tek ensures mission assurance and execution for customers and warfight...

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Systems Engineer / Level 2 - Level 3 (Security Clearance)

New
Kavaliro
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Los Angeles, CA(On-Site/Office)
Posted today
Secret
Not Specified

Responsibilities: Provide pre and post flight office support for NASA/DOD Engine Systems. Support the design and fabrication of product modifications through to field operations. Strong emphasis on ...

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Computational Physics - Postdoctoral Researcher

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

Company Description Join us and make YOUR mark on the World!Are you interested in joining some of the brightest talent in the world to strengthen the United States' security? Come join Lawrence Liverm...

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Anti-Submarine Warfare (ASW) Analyst

New
Sayres Defense
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San Diego, CA(On-Site/Office)
Posted today
Secret
Not Specified

Position Overview The Anti-Submarine Warfare (ASW) Analyst provides analytical support to U.S. Navy training, exercises, and operational assessments. This role supports the design, execution, recons...

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Intelligence Analyst

New
Leidos
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Marysville, CA(On-Site/Office)
Posted today
Top Secret
Not Specified

R-00173914Description Take Your Career to New Heights with Leidos! At Leidos, we don’t just offer jobs—we offer opportunities to grow, innovate, and make a real impact. With...

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Senior Intelligence Analyst

New
Leidos
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Marysville, CA(On-Site/Office)
Posted today
Top Secret
Not Specified

R-00173919Description Take Your Career to New Heights with Leidos! At Leidos, we don’t just offer jobs—we offer opportunities to grow, innovate, and make a real impact. With...

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Director of Prospect Management & Research

New
RAND Corporation
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Santa Monica, CA(On-Site/Office)
Posted today
Secret
Not Specified

Job Type: Regular Overview The Director of Prospect Management & Research actively supports RAND Development's fundraising efforts by partnering with Development Officers to track movement through t...

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Electronics Engineer

New
Leidos
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El Segundo, CA(On-Site/Office)
Posted today
Public Trust
Not Specified

R-00173885Description Looking for an opportunity to make an impact?At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers&...

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Help Desk Technician

New
SciTec, Inc.
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El Segundo, CA(On-Site/Office)
Posted today
Public Trust
Not Specified

Description SciTec, Inc. is a dynamic business with the mission to deliver advanced sensor data processing technologies and scientific instrumentation capabilities in support of National Security and ...

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Test Specialist/Engineer

New
Tactical Engineering & Analysis Inc.
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San Diego, CA(On-Site/Office)
Posted today
Secret
Not Specified

The Test Engineer is responsible for providing support to the Naval Information Warfare Center (NIWC) Pacific by supporting the Command and Control Processor Modernization (C2P Mod) testing effort. Th...

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Software Developer in Test

New
Tactical Engineering & Analysis Inc.
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San Diego, CA(On-Site/Office)
Posted today
Secret
Not Specified

The Test Engineer is responsible for designing, implementing, and maintaining automated testing processes within the C2P Modernization program. They will play a supporting role in achieving the organi...

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Software Developer in Test

New
Tactical Engineering & Analysis Inc.
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San Diego, CA(On-Site/Office)
Posted today
Secret
Not Specified

The Test Engineer is responsible for designing, implementing, and maintaining automated testing processes within the C2P Modernization program. They will play a supporting role in achieving the organi...

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Data Scientist

New
Rivet Operations Co.
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San Diego, CA(On-Site/Office)
Posted today
5+ yrs exp
Secret
Not Specified

Job Title: Data Scientist / Business Intelligence AnalystLocation: San Diego, CA Overview:Rivet Operations Company is seeking a highly skilled Data Scientist to support Business Intelligence (BI), dat...

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