203 defense contractor national defense jobs found in San Diego, CA

Cybersecurity Engineer II |  San Diego, CA Applying to this job will open a new window on the employer's web site to apply there. Posted Date 8/21/2026 Description Lyntris is a defense technology company that connects sensing to action across the connected battlespace. Lyntris brings together the talents of Accelint and Vitesse teams under one mission, with each contributing deep expertise within their domain. Combining differentiated hardware, software and mission expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed, precision and confidence in contested environments. Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space Force and allied partners — spanning strategic, operational and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs, Lyntris works...

Software Engineer I |  San Diego, CA Applying to this job will open a new window on the employer's web site to apply there. Posted Date 8/12/2026 Description Lyntris is a defense technology company that connects sensing to action across the connected battlespace. Lyntris brings together the talents of Accelint and Vitesse teams under one mission, with each contributing deep expertise within their domain. Combining differentiated hardware, software and mission expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed, precision and confidence in contested environments. Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space Force and allied partners — spanning strategic, operational and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs, Lyntris works at...

DevOps / Platform Engineer (Level II) |  San Diego, CA Applying to this job will open a new window on the employer's web site to apply there. Posted Date 4/02/2026 Description Lyntris is a defense technology company that connects sensing to action across the connected battlespace. Lyntris brings together the talents of Accelint and Vitesse teams under one mission, with each contributing deep expertise within their domain. Combining differentiated hardware, software and mission expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed, precision and confidence in contested environments. Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space Force and allied partners — spanning strategic, operational and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs,...

Field Service Representative |  San Diego, CA Applying to this job will open a new window on the employer's web site to apply there. Posted Date 3/26/2026 Description Lyntris is a defense technology company that connects sensing to action across the connected battlespace. Lyntris brings together the talents of Accelint and Vitesse teams under one mission, with each contributing deep expertise within their domain. Combining differentiated hardware, software and mission expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed, precision and confidence in contested environments. Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space Force and allied partners — spanning strategic, operational and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs, Lyntris...

Cybersecurity Analyst / Information Systems Security Officer (ISSO) |  San Diego, CA Applying to this job will open a new window on the employer's web site to apply there. Posted Date 3/18/2026 Description Lyntris is a defense technology company that connects sensing to action across the connected battlespace. Lyntris brings together the talents of Accelint and Vitesse teams under one mission, with each contributing deep expertise within their domain. Combining differentiated hardware, software and mission expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed, precision and confidence in contested environments. Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space Force and allied partners — spanning strategic, operational and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than...

Future Engineering Opportunities *This position requires an active U.S. national security clearance. To learn more about the security clearance process please access this link .    Accelint is a mission-driven technology company focused on strengthening national security and supporting critical industries .  We build the technologies that help operators and organizations see what’s happening, make faster and better decisions, take action with confidence, and stay ready for what comes next. Our work includes advanced sensors, autonomous systems, mission command and control software, AI-enabled training and simulation, and tools that improve logistics, maintenance, and overall readiness.   For nearly 30 years we have supported military and civilian agencies across the Department of Defense, U.S. allies and partners, and essential industries. When you join Accelint, your work directly contributes to protecting national security and...

Integrated Master Scheduler Accelint is a mission-driven technology company focused on strengthening national security and supporting critical industries .  We build the technologies that help operators and organizations see what’s happening, make faster and better decisions, take action with confidence, and stay ready for what comes next. Our work includes advanced sensors, autonomous systems, mission command and control software, AI-enabled training and simulation, and tools that improve logistics, maintenance, and overall readiness.   For nearly 30 years we have supported military and civilian agencies across the Department of Defense, U.S. allies and partners, and essential industries. When you join Accelint, your work directly contributes to protecting national security and strengthening the systems our society depends on.     This position requires active U.S. national security clearance and the ability to obtain one. To...

Junior Operating Systems Engineer (Embedded Linux / Yocto) |  San Diego, CA Applying to this job will open a new window on the employer's web site to apply there. Posted Date 7/13/2026 Description Lyntris is a defense technology company that connects sensing to action across the connected battlespace. Lyntris brings together the talents of Accelint and Vitesse teams under one mission, with each contributing deep expertise within their domain. Combining differentiated hardware, software and mission expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed, precision and confidence in contested environments. Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space Force and allied partners — spanning strategic, operational and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active...

Network Engineer |  San Diego, CA Applying to this job will open a new window on the employer's web site to apply there. Posted Date 5/30/2026 Description Lyntris is a defense technology company that connects sensing to action across the connected battlespace. Lyntris brings together the talents of Accelint and Vitesse teams under one mission, with each contributing deep expertise within their domain. Combining differentiated hardware, software and mission expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed, precision and confidence in contested environments. Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space Force and allied partners — spanning strategic, operational and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs, Lyntris works at every...

We are seeking a highly motivated Training Specialist to support the analysis, development, and implementation of Navy training systems and programs. This role involves conducting training needs assessments, evaluating alternative training solutions, supporting curriculum development, and preparing formal documentation in accordance with Navy standards and processes (e.g., NAVEDTRA 130 series).   Duties & Responsibilities  Provide installation support for multiple programs and systems at NAVWAR. In accordance with the Navy Modernization Process (NMP) and following the Enterprise Change Request Process (ECRP), use configuration and change management tools, including SPIDER and CAPS, to ensure that installation packages are delivered in a complete state and in a timely      fashion. Monitor development timelines to ensure they are consistent with Integrated Master Schedules and Fielding Plans. Develop and present...

Aegis BL 9 Combat Systems Coordinator (CSC) / Senior Aegis (FCA)   Clearance Level Secret   Category Program Instruction Support   Location San Diego, California (Onsite Workplace) Apply Now Key Skills For Success Classroom Teaching Instructional Materials Teaching Share REQ#:  RQ222408 Public Trust:  None Requisition Type:  Regular Your Impact Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure. Job Description TRAINING SPECIALIST SENIOR -  Aegis BL 9 Combat Systems Coordinator (CSC) / Senior Aegis Fire Controlman (FCA) Make meaningful contributions that fuel critical outcomes for some of the most complex government, defense, and intelligence projects. Join GDIT as a...

ASW Training Specialist   Clearance Level Secret   Category Program Instruction Support   Location San Diego, California (Onsite Workplace) Apply Now Key Skills For Success Military Team Training Technical Support Training Training Techniques Share REQ#:  RQ223189 Public Trust:  None Requisition Type:  Regular Your Impact Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure. Job Description TRAINING SPECIALIST SENIOR -  ASW Training Specialist Make meaningful contributions that fuel critical outcomes for some of the most complex government, defense, and intelligence projects. Join GDIT as a Training Specialist Senior for a career where your growth is just as...

CTT / Electronic Warfare Supervisor (EWS) Tactical Trainer   Clearance Level Secret   Category Program Instruction Support   Location San Diego, California (Onsite Workplace) Apply Now Key Skills For Success Design Training Needs Assessment Training Techniques Share REQ#:  RQ222402 Public Trust:  None Requisition Type:  Regular Your Impact Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure. Job Description TRAINING SPECIALIST SENIOR -  CTT/Electronic Warfare Supervisor (EWS) Tactical Trainer Make meaningful contributions that fuel critical outcomes for some of the most complex government, defense, and intelligence projects. Join GDIT as a Training Specialist Senior...

Littoral Combat Ship (LCS) Tactical Action Officer (TAO) Trainer at LCS Training Facility, San Diego, CA   Clearance Level Secret   Category Program Instruction Support   Location San Diego, California (Onsite Workplace) Apply Now Key Skills For Success Leadership Lesson Planning Teaching Methods Training Training Techniques Share REQ#:  RQ212570 Public Trust:  None Requisition Type:  Regular Your Impact Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department of Defense’s mission to keep our country safe and secure. Job Description Training Specialist Principal - LCS Tactical Action Officer Transform technology into opportunity as a Training Specialist Principal with GDIT. At GDIT, people are our...

Program Security Representative (PSR) I   Clearance Level Top Secret/SCI   Category Security Operations   Location Palmdale, California (Onsite Workplace) Apply Now Key Skills For Success Facility Security Physical Security System Security Share REQ#:  RQ219224 Public Trust:  None Requisition Type:  Regular Your Impact Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure. Job Description The Program Security Representative’s primary function is to provide multi-discipline security support for one or more of the customer’s Special Access Programs (SAPs). The position will provide “day-to-day” multi-discipline analysis for Collateral, Sensitive Compartmented...

Project Controls Engineer   Clearance Level None   Category Program Delivery and Execution   Location San Diego, California (Onsite Workplace) Apply Now Key Skills For Success Earned Value Management Systems (EVMS) Project Controls Scheduling Share REQ#:  RQ222502 Public Trust:  None Requisition Type:  Regular Your Impact Own your opportunity to be at the center of GDIT’s business operations. Make an impact by collaborating across functions to make mission success achievable. Job Description GDIT is looking for a talented and experienced  Project Controls Engineer  who can lead the development and management of the program master schedule for a large complex program. To include complete cost & schedule integration aligned with the contractual scope awarded. The candidate must...

Telephone Maintenance Technician   Clearance Level None   Category Network and Telecommunications   Location Fremont, California (Onsite Workplace) Apply Now Key Skills For Success Telecommunications Telecommunication Systems Video Systems Share REQ#:  RQ226061 Public Trust:  Other Requisition Type:  Regular Your Impact Own your opportunity to work alongside federal civilian agencies. Make an impact by providing services that help the government ensure the well being and support of U.S. citizens. Job Description Telecommunications Analyst Transform technology into opportunity as a Telecommunications Analyst with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you’ll be at the forefront of innovation and play a meaningful part in...

Test Engineer | Secret clearance   Clearance Level Secret   Category Professional Engineering   Location Point Magu, California (Onsite Workplace) Apply Now Key Skills For Success Design Design Modifications Electrical Systems Troubleshooting Share REQ#:  RQ226812 Public Trust:  None Requisition Type:  Regular Your Impact Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure. Job Description Transform technology into opportunity as a  Test Engineer  with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you’ll be at the forefront of innovation and play a meaningful part in improving how agencies operate....

Ship’s Self-Defense Air Defense Warfare Coordinator (SSDS ADWC) Trainer at SCSTC Detachment Southwest, San Diego, CA   Clearance Level Secret   Category Program Instruction Support   Location San Diego, California (Onsite Workplace) Apply Now Key Skills For Success Training Needs Assessment Training Techniques Weapons Share REQ#:  RQ223723 Public Trust:  None Requisition Type:  Regular Your Impact Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure. Job Description TRAINING SPECIALIST -   Ship’s Self-Defense Air Defense Warfare Coordinator (SSDS ADWC) Trainer   MEANINGFUL WORK AND PERSONAL IMPACT   Develops, organizes and conducts Combat...

Sr. Electrical Engineer   Clearance Level Interim Secret   Category Professional Engineering   Location Port Hueneme, California (Onsite Workplace) Apply Now Key Skills For Success Design Documentation Electronic Systems Troubleshooting Share REQ#:  RQ209520 Public Trust:  None Requisition Type:  Regular Your Impact Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department of Defense’s mission to keep our country safe and secure. Job Description We are searching for a self-motivated electrical engineer experienced in test equipment development and maintenance. The candidate must have a proven record of exceptional technical aptitude, efficiency, and delivery while maintaining quality and timeliness in all aspects of support,...