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12 principal systems engineer jobs found

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SAIC
Sep 02, 2026
Principal Nuclear Detection Systems Engineer
SAIC CA
Description Make a difference for national security by joining a team of dedicated professionals in El Segundo, CA who assist the US Space Force in developing and deploying the satellites and ground systems for Nuclear Detection System (NDS) capabilities. These systems provide timely and critical nuclear detection data to our warfighter to ensure national security mission success. Our Systems Engineering & Integration (SE&I) team has an immediate need for a hybrid Principal Nuclear Detection System Engineer (USNDS) in El Segundo, CA with mission experience in space/ground systems for the management, development, and deployment of NDS systems to ensure on-time delivery of capabilities. As a SE&I professional, candidates will provide System Engineering (SE) services across all SE disciplines with emphasis in integration and test toward delivering operational capabilities into an enterprise system architecture. Job Responsibilities: Provide Systems...
SAIC
Jul 01, 2026
Systems Engineer Principal
SAIC CA
Description SAIC is looking for a cleared Systems Engineering candidate to lead an engineering team in providing technical assistance and recommendations regarding the planning, implementation, and management of Battlespace Awareness and Information Operations (BAIO) Programs of Record within the Program Executive Office, Command, Control, Computers, Communications, and Intelligence (PEO C4I). Support includes providing high quality engineering advisory services as they relate to evaluating requirements, training and planning support, assisting in the development of doctrine, tactics, techniques, and procedures, advocating requirements in support of future effects-based warfare, assessment of Research & Development (R&D) and Science and Technology (S&T) efforts. • Manage a team of cross-functional engineering disciplines in the delivery of Systems Engineering and Technical Assistance capabilities to the government customer. • Analyze required system capabilities to...
SAIC
Jun 03, 2026
Systems Engineer Principal - MBSE
SAIC CA
Description SAIC is seeking a cleared MBSE Systems Engineer who is a current Model-Based Engineering practitioner to support a portfolio of Battlespace Awareness and Information Operations (BAIO) capabilities to our DoD customer. In this role, you will join our highly energized team of solution architects as we deploy innovative solutions for Information Operations; Intelligence, Surveillance and Reconnaissance; and Meteorology and Oceanography capabilities. The candidate applies systems engineering, systems modeling, product lifecycle management, modeling and simulation, and related techniques, tools, and methodologies to construct, steward, curate, and leverage end-to-end digital content for client programs. Job Highlights • Exercise both thought leadership and practical engineering application by leveraging your Systems Engineering and Model-Based Engineering experiences to transform programs from a document-centric approach to a model-based approach to more effectively...
SAIC
Sep 16, 2026
Software Engineer Principal
SAIC CA
Description SAIC is looking for a Principal Software engineer to join our Solutions and Technology group. This is a hybrid role and candidates must resided in the San Diego area with the ability to work at our Point Loma location. Candidates must be able to go on site 3 days a week . Candidates must be able to do the following: In a technical capacity, collaborate closely with clients to guarantee the seamless implementation of a streaming data platform and create innovative solutions that leverage it According to client requirements, specify, construct, test, and implement specialized machine learning and/or other mission-focused systems Engage in deployment and execution planning alongside clients Directly support deployment of software on Kubernetes Produce documentation for clients in order to assist with custom applications Provide tutorials and technical information for product documentation Full stack development using Python, Java, or JavaScript for front-end...
SAIC
Sep 16, 2026
Principal Cyber Engineer
SAIC CA
Description SAIC is seeking a Principal Cybersecurity Engineer to support critical Navy communication systems within the DoD. This role is ideal for a hands-on security professional with deep engineering expertise, offensive security experience, and a proven track record finding vulnerabilities, and securing classified and high-security environments. You will serve as a key technical expert collaborating with engineers, program managers, and government personnel to deliver secure, resilient strategic systems. This role is fully ON-SITE in San Diego, CA. Must be local to area. Up to 10% travel involved. JOB DUTIES: Plan and execute penetration test exercises against systems, networks, and applications simulating real world environment. Perform network traffic analysis and threat detection using Wireshark and other offensive/defensive security tools. Architect and harden IT systems, virtualized environments, and network security devices in classified settings....
SAIC
Sep 02, 2026
Senior Principal Cloud Architect
SAIC CA
Description SAIC is seeking a Senior Principal Cloud Architect in San Diego, CA . The successful candidate initiates, supervises, and/or develops requirements from a project's inception to conclusion for complex programs. Provides strategic advice, technical guidance and expertise to program and project staff. Provides detailed analysis, evaluation and recommendations for improvements, optimization development, and/or maintenance efforts for client-specific or mission critical challenges/issues. This is a remote role in San Diego, CA but must be local to area due to onsite needs, up to 10% of travel involved in this role. JOB DUTIES: Providing technical leadership and hands-on development and implementation of commercial cloud solution architectures that modernize the way our customers architect, deploy, and use cloud technology, focusing on security, scalability, and resiliency Planning, designing, and managing the migration, re-platforming, integration,...
SAIC
Aug 26, 2026
Software Engineer Principal
SAIC CA
Description SAIC is looking for a Principal Software engineer to join our Solutions and Technology group. This is a hybrid role and candidates must resided in the San Diego area with the ability to work at our Point Loma location. Candidates must be able to go on site 3 days a week . Candidates must be able to do the following: In a technical capacity, collaborate closely with clients to guarantee the seamless implementation of a streaming data platform and create innovative solutions that leverage it According to client requirements, specify, construct, test, and implement specialized machine learning and/or other mission-focused systems Engage in deployment and execution planning alongside clients Directly support deployment of software on Kubernetes Produce documentation for clients in order to assist with custom applications Provide tutorials and technical information for product documentation Full stack development using Python, Java, or JavaScript for front-end...
Lockheed Martin
Aug 21, 2026
Mechanical Engineer - E2
Lockheed Martin CA
Standard Job Description Position details: Location: Sunnyvale, CA Work Schedule: 9x80 Position type: Full-time onsite (this is not a hybrid position) Lockheed Martin Space is seeking a junior mechanical engineer to join our team in Sunnyvale, CA!   As a Mechanical Engineer you will be key in supporting preliminary and detailed design and analysis of missile structures and thermal protection systems. Responsibilities include, but are not limited to:    - Design of missile mechanical subsystem(s) such as deployment mechanisms, separation mechanisms, actuators, sensor cover mechanisms, and other mechanisms - Interface with the customer to obtain end user input and build a partnership. - Design hardware, mechanical/structural  components, and subsystems aligned with customer requirements and LM Space standard methodologies (CIPS) in activities related to developing, revising, and releasing engineering drawings - Use Creo Parametric develop and release...
Lockheed Martin
Aug 21, 2026
Mechanical Engineer - E2
Lockheed Martin CA
Standard Job Description Position details: Location: Sunnyvale, CA Work Schedule: 9x80 Position type: Full-time onsite (this is not a hybrid position)   Lockheed Martin Space is seeking a junior mechanical engineer to join our team in Sunnyvale, CA!   As a Mechanical Engineer you will be key in supporting preliminary and detailed design and analysis of missile structures and thermal protection systems. Responsibilities include, but are not limited to:    - Design of missile mechanical subsystem(s) such as deployment mechanisms, separation mechanisms, actuators, sensor cover mechanisms, and other mechanisms - Interface with the customer to obtain end user input and build a partnership. - Design hardware, mechanical/structural  components, and subsystems aligned with customer requirements and LM Space standard methodologies (CIPS) in activities related to developing, revising, and releasing engineering drawings - Use Creo Parametric develop and release...
SAIC
Jul 27, 2026
Senior Program Systems Integration Engineer
SAIC CA
Description JOB DESCRIPTION: SAIC is seeking a Principal Program Systems Integration Engineer to join our team in El Segundo, CA. Due to security requirements, work is required to be on-site in a secure facility. SAIC is sub-contractor on the Military Satellite Communications (MILSATCOM) Systems Engineering, Integration and Test (MSEIT) contract. The MSEIT effort provides leading edge SE&I for the Space Force's Space System Command. We support the Space Force's acquisition of state-of-the-art MILSATCOM systems, providing secure global, survivable, and protected communications for our nation's warfighters. We seek technical individuals who will thrive in a highly collaborative work environment of small teams, using the most modern tools and methodologies to tackle the challenges of integrating complex space and ground communications systems. You will join the Systems Integration team within the broader Systems Engineering team defining the next generation of space...
SAIC
Jul 15, 2026
Sr. Principal Digital Engineer- MBSE
SAIC CA
Description SAIC's Solutions & Technology Group (STG) is seeking an experienced MBSE Sr. Principal Digital Engineer to join our team of experts. This position will lead the development, execution, and maturation of cutting-edge Digital Engineering solutions in support of Defense, Federal Civilian, and/or National Security customers and their systems. This role focuses on advancing model-based systems engineering (MBSE), digital engineering (DE), and system-of-systems (SoS) capabilities to address evolving engineering challenges and deliver mission success. This position requires onsite work in San Diego, CA. Flexibility to travel up to 10% of the time is required for this role. You will work alongside a team of experts and stakeholders in a dynamic, mission-driven environment to advance cutting-edge capabilities in support of national security objectives. As a thought leader and systems engineering expert, you will support the integration of MBSE methodologies...
SAIC
Jul 27, 2026
Principal Systems Integration
SAIC CA
Description SAIC seeks an experienced and energetic Principal Integration Enginee r to directly support the modernization of the space launch ranges, meeting mission requirements, providing range capabilities, and supporting the Assured Access to Space (AATS) mission. The overarching purpose of the program is to perform system modernization and digital transformation projects that will enable the acceleration of the space launch cadence to enable the Spaceport of the future. This position is located in Santa Maria, CA. Job Responsibilities: • Defines discrete systems with processes to link together complex systems and components with software applications to perform as a coordinated whole. • Uses a broad range of skills and a breadth of knowledge in several engineering/technology disciplines including systems and enterprise architecture, software and hardware engineering, interface protocols, and general problem-solving skills. • Assist in the development of transition...
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