13 defense contractor national defense jobs found in San Diego

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...

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...

Computer Programmer City/Town San Diego Location California Job Code 2947   Job Description: The Computer Programmer will help support maintenance and planning for the overhaul and repair of equipment and systems associated with U.S. Navy Aircraft Carriers (CVN) and U.S. Navy Surface Ships.  Work will be performed on board US Naval vessels located in San Diego, CA.   The salary for this position is $58-$ 70K The support will include providing aircraft carriers and the surface fleet a team of experts in Navy systems/equipment maintenance, for both preventive and equipment maintenance training.   The Computer Programmer  will help “Find, Fix, and Train” Ship’s Force equipment operators and maintenance technicians, with the goal of enabling sailors to maintain and repair equipment during their...

Data Entry Operator City/Town San Diego Location California Job Code 2949   Job Description: The Data Entry Operator will help support maintenance and planning for the overhaul and repair of equipment and systems associated with U.S. Navy Aircraft Carriers (CVN) and U.S. Navy Surface Ships.  Work will be performed on board US Naval vessels located in San Diego, CA.   The salary for this position is $32-$40K The support will include providing aircraft carriers and the surface fleet a team of experts in Navy systems/equipment maintenance, for both preventive and equipment maintenance training.   The Data Entry Operator will help support “Find, Fix, and Train” Ship’s Force equipment operators and maintenance technicians, with the goal of enabling sailors to maintain and repair equipment during their...

SCSTC IAMD Tactical Action Officer | Active Secret clearance   Clearance Level Secret   Category Program Instruction Support   Location San Diego, California (Onsite Workplace) Apply Now Key Skills For Success Combat Systems Tactical Training Training Techniques Share REQ#:  RQ220810 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 IAMD  Tactical Action Officer Trainer - San Diego, CA.   MEANINGFUL WORK AND PERSONAL IMPACT Must be prepared to support training process utilizing ship embedded training systems and shore-based distributive training systems requiring...

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,...

T3W Business Solutions, Inc.  is a Woman-Owned Small Business with Headquarters located in San Diego, CA. It is our mission to help our clients develop strategies to optimize their use of space and resources resulting in maximum benefits; we also deliver quality data and analysis to support our client’s daily facility operations, planning, and compliance programs. We are looking for a  Computer Operator III  in San Diego, California.   SUMMARY:  Provide professional computer operator services assist NIWC Pacific Security Support Services.   RESPONSIBILITIES Responsible for running computer operations as well as ensuring that computer systems and hardware are in good working order. Tasks include maintaining work order schedules, inputting commands into computer terminals, performing routine maintenance and installing software updates. Prepares and operate computer hardware systems to process business, scientific,...

Summary   Provide professional intelligence services to NIWC Pacific Security Support Services.   Responsibilities Maintain the security and integrity of intelligence systems and networks. Participate in a range of services including research (via JWICS and SIPRNET), researching and disseminating validated. Intelligence products, and regular reviews of key Intelligence Community (IC) classified websites. Submit formal tasking to the IC through the Community On-Line Intelligence System for End Users and Managers (COLISEUM) System as needed. Evaluate intelligence threat operations and system vulnerabilities and develops assessments, threat profiles and custom detecting  capabilities. Identify and acquire raw, primary, and secondary data for predicative and reactive analyses. Requirements 4-6 years of experience Top Secret/SCI-Required   Shayal Prasad

1521 - Cybersecurity Engineer II-III On-site IMS (IMSENG, IMSPRG, IMSNM, IMST&R) Full time 1521 - ACYBL01-3 San Diego, California, United States Overview Application Description   Sigma Defense is seeking  Cybersecurity Engineers, levels II-III  to support the Consolidated Afloat Networks and Enterprise Services (CANES) program for U.S. Navy platforms. The candidate will be responsible for system hardening, implementing Security Technical Implementation Guides (STIGs), supporting Risk Management Framework (RMF) accreditation packages, and responding to cybersecurity audits and scan findings across classified and unclassified networks. Experience with tools such as Assured Compliance Assessment Solution (ACAS), Security Content Automation Protocol (SCAP), Endpoint Security Solution (ESS), and Security Information and Event Management (SIEM) are...

1519 - Systems Engineer I, II, or III On-site IMS (IMSENG, IMSPRG, IMSNM, IMST&R) Full time 1519 - ASYSL01-3 San Diego, California, United States Overview Application Description   Sigma Defense is seeking a  Systems Engineer  to support PMW160 and NIWC Pacific for U.S. Navy Enterprise networks. The successful candidate will have an opportunity to shape capability delivery by providing system design, system development, systems integration, configuration, troubleshooting, and lifecycle engineering support for Navy IT networks and systems. The candidate will work closely with Navy stakeholders and partner teams to ensure applications and services are documented and integrated effectively. Equal Opportunity Employer/Veterans/Disabled: Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for...

1520 - Network Engineer I, II, or III On-site IMS (IMSENG, IMSPRG, IMSNM, IMST&R) Full time 1520 - ANETL01-3 San Diego, California, United States Overview Application Description   Sigma Defense is seeking a  Network Engineer I-III  to support the design, implementation, and sustainment of the Navy’s enterprise networks. The hired candidate will design, configure, secure, automate, and document high-availability networks in both shipboard and lab environments while supporting the full lifecycle from installation through sustainment. This includes working on DoD initiatives such as SD-WAN, IPv6 Migration, Zero Trust Networks and Cross-Domain Network solutions. They will work with SMEs in Cybersecurity, Systems Management, Systems Engineering, and Quality Assurance to learn the needs and goals of the system and shape the requirements of the...

Network Administrator (San Diego)     San Diego, California, US, 92123 Category: Information Technology Job ID: 33451 widget: Full-Time   Secret No - Teleworking not available for this position $93535.65-$155892.76         Position Description & Qualifications The AT/FP Ashore Sustainment Program is executed by the Commander Navy Installations Command (CNIC) Public Safety Systems (PSS) Anti-Terrorism/Force Protection (AT/FP) Ashore Program Management Office (PMO), in coordination with Naval Facilities Engineering Systems Command Expeditionary Warfare Center (EXWC) and CNIC Regional Program Managers (RPMs). The program delivers preventive...