218 systems engineer jobs found

Cybersecurity Systems Engineer | San Diego, CA Applying to this job will open a new window on the employer's web site to apply there. Posted Date 9/19/2026 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...

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...

Title: Senior Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. Why Join Us? Innovative Projects:  KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions. Collaborative Environment:  Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace. Impactful Work:  Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense. KBR is seeking an experienced Senior Systems Engineer to join our small, hand-selected team supporting...

Title: Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. Why Join Us? Innovative Projects: KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions. Collaborative Environment: Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace. Impactful Work: Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense. Job Title: Technical Advisor, Systems Engineering Job Summary: KBR is seeking a Systems Engineer to...

Title: Senior Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. KBR is seeking a Cyber Security Engineer to join our team in El Segundo, CA.  An active TS/SCI is required to be considered for this position. Why Join Us? Innovative Projects:  KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions. Collaborative Environment:  Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace. Impactful Work:  Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and...

Title: Software Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. You will join a systems engineering team defining the next generation of space communication systems supporting US Space Force (USSF) satellite communications. You will support Systems Engineering & Integration (SE&I) activities in a multidisciplinary and collaborative environment. You will interface and collaborate with SE&I team members, contractors, government civilians and members of the USSF. You will lead and support several working groups responsible for leading technical discussion, resolve and identify risk, requirement gaps, developing briefings, writing, and tracking action items, and...

Title: Strategic Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. KBR is seeking a Systems Engineering & Acquisition Program Manager to support advanced Department of Defense satellite communications and space systems programs. The successful candidate will provide technical and programmatic leadership for acquisition planning, requirements development, systems engineering, stakeholder coordination, and strategic modernization efforts across protected SATCOM and NC3-related architectures. The ideal candidate possesses experience leading Integrated Product Teams (IPTs), supporting acquisition programs, developing modernization strategies, conducting trade studies, and...

Title: Strategic Requirements Systems Engineer Belong. Connect. Grow. With KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. The MILSATCOM Systems Engineering, Integration and Test (MSEIT) team in support of Space Systems Command (SSC) in El Segundo is seeking an individual to provide requirements development and management support for the Military Satellite Communications (MILSATCOM) Capability area. The MILSATCOM portfolio of programs has an ongoing need for IA/Cybersecurity support, to meet the needs of our emerging next-generation protected SATCOM. The MSEIT contract provides leading-edge Systems Engineering & Integration (SE&I) support for the U.S. Space Force’s SSC. We support the Space Force’s acquisition...

Title: Senior Model-Based Systems Engineer (MBSE) KBR’s Mission Engineering Division delivers complex technical solutions and expert support to the U.S. Department of War, specializing in modeling and simulation, cyber transformation, air vehicle mission integration, and lifecycle support. As a trusted partner with a proven history in mission technology, KBR collaborates closely with clients to develop innovative and effective solutions. With a strong ethical framework, KBR prioritizes data security, privacy, and responsible information management to ensure mission success.  Our  Carlsbad, CA team  is seeking a  Mid-Level Model-Based Systems Engineer (MBSE)  to support a classified all-domain mission system development program for the Department of War .  In this role, you will develop system and mission-level models that inform capability design, integration, and verification across a complex engineering environment. You will collaborate with multi-disciplinary engineering...

Title: SATCOM Terminal Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. Why Join Us? Innovative Projects:  KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions. Collaborative Environment:  Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace. Impactful Work:  Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense. The Satellite Communications (SATCOM) Terminal Systems Engineer will support the architecture,...

Title: SATCOM Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. Why Join Us? Innovative Projects:  KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions. Collaborative Environment:  Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace. Impactful Work:  Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense. The Satellite Communications (SATCOM) Systems Engineer will support the architecture, analysis, integration,...

Title: Senior SATCOM Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. Why Join Us? Innovative Projects:  KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions. Collaborative Environment:  Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace. Impactful Work:  Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense. The Senior Satellite Communications (SATCOM) Systems Engineer will support the architecture, analysis,...

Title: ESS Terminals Senior Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. KBR is seeing an ESS Terminals Senior Systems Engineer to join our team in El Segundo, CA. The ESS Terminals Senior Systems Engineer will play a critical role in designing, implementing, and maintaining complex infrastructure, platform, and software systems that supports National Leadership Authority capabilities. This position requires a deep understanding of system architecture, Protected SATCOM Terminal configurations, and security protocols to ensure robust, scalable, and secure environments. The engineer will collaborate closely with outside organizations to analyze system requirements and...

Title: ESS Terminals Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. KBR is seeking an ESS Terminals Systems Engineer to join our team in El Segundo, CA. The ESS Terminals Systems Engineer will play a critical role in designing, implementing, and maintaining complex infrastructure, platform, and software systems that support National Leadership Authority capabilities. This position requires a deep understanding of system architecture, Protected SATCOM Terminal configurations, and security protocols to ensure robust, scalable, and secure environments. The engineer will collaborate closely with outside organizations to analyze system requirements and oversee development,...

Title: Cyber & Cross Domain Solution (CDS) Systems Engineer Belong. Connect. Grow. with KBR! KBR is seeking an experienced Cyber & Cross Domain Solution (CDS) Systems Engineer to support the MSEIT contract at Space Systems Command (SSC). This role focuses on defining, evaluating, integrating, and supporting secure data movement and cybersecurity strategies across multiple mission and operational environments supporting U.S. Space Force capabilities. The position will help guide the program’s cross-domain and cybersecurity approach across environments including IL5, IL6, air-gapped mission systems, and Mission Partner Environment (MPE). The role includes evaluating existing Cross Domain Solutions (CDSs), leveraging emerging technologies and cloud-native capabilities where appropriate, and helping define future CDS architectures and implementation strategies. The role also supports broader cybersecurity initiatives including CI/CD vulnerability remediation...

Title: Strategic Interfaces Systems Engineer Belong. Connect. Grow. With KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security. The MILSATCOM Systems Engineering, Integration and Test (MSEIT) team in support of Space Systems Command (SSC) in El Segundo is seeking an individual to provide requirements development and management support for the Military Satellite Communications (MILSATCOM) Capability area. The MILSATCOM portfolio of programs has an ongoing need for IA/Cybersecurity support, to meet the needs of our emerging next-generation protected SATCOM. The MSEIT contract provides leading-edge Systems Engineering & Integration (SE&I) support for the U.S. Space Force’s SSC. We support the Space Force’s acquisition...

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Specialist, Systems Engineer Job Code: 42920 Job Location: Salt Lake City- UT Job Schedule: 9/80- employees work 9 out of every 14 days- totaling 80 hours worked- and have every other Friday off Position Overview:  The Electronic...

1519 - Systems Engineer III On-site IMS (IMSENG, IMSPRG, IMSNM, IMST&R) Full time 1519 - ASYSL03 San Diego, California, United States Overview Application Description   Sigma Defense is seeking a Systems Engineer III 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 employment without regard to race,...

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Senior Specialist, Systems Engineer - Military GPS Receivers Job Code: 43789 Job Location: Yorba Linda, CA Schedule: 4/10: Employees work 10 hour days, 4 days a week   Job Description:     The Senior Specialist Systems...

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Sr  Associate, Systems Engineer Job Code: 41391 Job Location:  Carlsbad, CA Job Schedule: 9/80: Employees work 9 out of every 14 days – totaling 80 hours worked, and have every other Friday off    Job Description:...