98 systems engineer iii jobs found in San Diego, CA

Epsilon C5I, Inc. ( is seeking a Systems Engineer III with at least 4-8 years’ experience for work in San Diego, CA. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Develops system requirement specifications for mechanical, structural or electrical/electronic design by analyzing user's requirements, concept of operations documents and high-level system architectures. Duties and Responsibilities: Develops technical documentation. Develops system Architecture and system design documentation. Incorporates new plans, designs and systems into ongoing operations. Contributes to the technical direction for the development, engineering, interfacing, integration and testing of all components of complex hardware/software systems to include network analysis, functional allocation, systems requirements reviews, interface standards and system architectures....

Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence and combat systems, is seeking a Systems Engineer III / DevSecOps Engineer, with 4-8 years of experience, for work in San Diego, CA. Our engineering efforts provide the warfighter with common enterprise solutions to improve information sharing and combat effectiveness. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Our software team employs an Agile Scrum process to rapidly design, code, and integrate capabilities into a mature Platform as a Service (PaaS) solution. Work involves troubleshooting, securing Linux operating systems and networks, and securing containers and container platforms. The ideal person would be interested in System Architecture and Security, while also interested in the nitty gritty of security and system access control. Duties and...

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, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. Essential Job Duties (not all-inclusive): Design, Develop, enhance, integrate, and maintain software...

Saalex Corporation  is seeking multiple  Systems Engineer III in Tidewater, VA and San Diego, CA.  Saalex Corp., is an Engineering and Information Technology Services company with a focus on Test Range Operations and Management, Engineering and Logistics Services, Data Analytics and Business Intelligence Services and Information Technology Services. Founded in 1999 by Travis Mack, Saalex Solutions is a Service Disabled Veteran-Owned and Operated business with prime and subcontract expertise serving the Navy, Army, Air Force, NASA, corporate clients, and local governments. Saalex offers competitive compensation, career development, flexible work schedules and excellent benefits. Position Type:   Contingent on Contract Award. Salary:  $110k-$180k (depending on experience) The Systems Engineer III supports the Navy by designing, engineering, and integrating enterprise IT systems and architectures across global Live Virtual Constructive...

Sigma Defense is seeking an Application Systems Integration Engineer III to join our team in San Diego, CA. The Integration Engineer (IE) is responsible for providing detailed integration solution analysis during the ASI Process. 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, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. Essential Job Duties (not all-inclusive): Candidate will identify areas for improvement, innovation, simplification and subsequently take the lead on executing on those plans. Elaboration of integration requirements initially gathered by the Application Engineer. Act as liaison between Network POR Systems Engineering/tester and application provider. Develop integration solutions and...

Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence and combat systems, is seeking a Software Engineer III, with 4-8 years of experience, for work in San Diego, CA. Our engineering efforts provide the warfighter with common enterprise solutions to improve information sharing and combat effectiveness. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Our software team employs an Agile Scrum process to rapidly design, code, and integrate capabilities into a mature Platform as a Service (PaaS) solution. Work involves implementing new functionality, troubleshooting, and securing containers and container platforms. The ideal person would be security-focused and interested in solving practical software challenges, building modular web applications, and collaborating with a team to turn user needs into useful...

Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence and combat systems, is seeking a Cyber Security Engineer III with 4-8 years of experience for work in San Diego, CA. Our engineering efforts provide the warfighter with tools to support critical support to operational missions to improve targeting capabilities. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on!  Summary:   The Cybersecurity Engineer shall be responsible for leading multiple efforts for system configurations maintaining authority to operate. The Cybersecurity Engineer conducts information system security engineering activities, such as capturing and tracking evolving information security requirements and ensuring the system maintains a strong security posture through purposeful design and configuration.  Duties and...

Epsilon C5I ( focused on software development and systems engineering for intelligence and combat systems, is seeking a Software Engineer III to join our team in designing and developing secure, mission-critical software solutions for high-assurance environments. The ideal candidate will have strong experience in Java, API development, and publish/subscribe architectures, along with a proven ability to deliver software in IL6 and IL7 environments. Key Responsibilities: Design, develop, and maintain Java-based applications and RESTful APIs. Implement publish/subscribe messaging architectures using technologies such as ActiveMQ or Kafka. Develop software solutions for classified environments (IL6 and IL7). Ensure compliance with cybersecurity requirements, including familiarity with RMF and secure coding practices. Collaborate with cross-functional teams to deliver high-quality, secure software solutions. Participate in code reviews, testing, and integration...

Sigma Defense is seeking a Network Security Engineer III to join our team in San Diego, CA. This position supports the enforcement of DoD cybersecurity policies (STIGs, RMF, NIST SP 800-53) across CANES environments while leveraging expertise in ACAS, Trellix ESS, NetIQ Sentinel, and Splunk. This role requires hands-on system hardening, vulnerability management, and configuration automation via GitLab, GitHub, and Spork/Spork+. 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, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. Essential Job Duties (not all-inclusive): Implement and enforce DoD cybersecurity policies (STIGs, RMF, NIST SP 800-53) across CANES systems. Design, Develop, implement and troubleshoot...

This is a shipboard position with the Military Sealift Command, a U.S. Navy command. Ships operate worldwide, so the work is at sea and the San Diego location is a reference point only; assignments are made by MSC. Applications are submitted through MSC's own application portal (apply.sealiftcommand.com) - contacting your Veteran Staffing Consultant does not submit one. MSC's average annual earnings for this role: $208,790 plus a recruitment bonus of up to $75,876. That is total take-home including overtime and penalty pay, not the base pay in the job announcement. Announcement opens continuously from 10/01/2026, with periodic cut-offs. A recruitment incentive is authorized for eligible selectees and requires a service agreement. Incentive is paid as a lump sum at the beginning of employment with the Command. Mixed Work Schedule, VEOA candidates and Annuitants selected for employment are not eligible for recruitment incentives. The Third Assistant Engineer is a civil...

This is a shipboard position with the Military Sealift Command, a U.S. Navy command. Ships operate worldwide, so the work is at sea and the San Diego location is a reference point only; assignments are made by MSC. Applications are submitted through MSC's own application portal (apply.sealiftcommand.com) - contacting your Veteran Staffing Consultant does not submit one. MSC's average annual earnings for this role: $75,876. That is total take-home including overtime and penalty pay, not the base pay in the job announcement. Announcement opens continuously from 10/01/2026, with periodic cut-offs. MIXED WORK SCHEDULE Candidates selected for Mixed Work Schedule and annuitants, regardless of work schedule, are not eligible for recruitment and retention incentives. The Third Assistant Engineer is a civil service mariner (CIVMAR) employed by the Navy to serve the Military Sealift Command (MSC) onboard naval auxiliaries and hybrid-manned warships worldwide, in peace and war. MSC...

This is a shipboard position with the Military Sealift Command, a U.S. Navy command. Ships operate worldwide, so the work is at sea and the San Diego location is a reference point only; assignments are made by MSC. Applications are submitted through MSC's own application portal (apply.sealiftcommand.com) - contacting your Veteran Staffing Consultant does not submit one. MSC's average annual earnings for this role: $244,075 plus a recruitment bonus of up to $50,943. That is total take-home including overtime and penalty pay, not the base pay in the job announcement. Announcement opens continuously from 10/01/2026, with periodic cut-offs. A recruitment incentive is authorized for eligible selectees and requires a service agreement. Incentive is paid as a lump sum at the beginning of employment with the Command. VEOA candidates and Annuitants selected for employment are not eligible for recruitment incentives. The Second Assistant Engineer is a civil service mariner (CIVMAR)...

This is a shipboard position with the Military Sealift Command, a U.S. Navy command. Ships operate worldwide, so the work is at sea and the San Diego location is a reference point only; assignments are made by MSC. Applications are submitted through MSC's own application portal (apply.sealiftcommand.com) - contacting your Veteran Staffing Consultant does not submit one. MSC's average annual earnings for this role: $84,905. That is total take-home including overtime and penalty pay, not the base pay in the job announcement. Announcement opens continuously from 10/01/2026, with periodic cut-offs. MIXED WORK SCHEDULE. Candidates selected for Mixed Work Schedule and annuitants, regardless of work schedule, are not eligible for recruitment and retention incentives. The Second Assistant Engineer is a civil service mariner (CIVMAR) employed by the Navy to serve the Military Sealift Command (MSC) onboard naval auxiliaries and hybrid-manned warships worldwide, in peace and war. MSC...

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. 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, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not...

General program information and/or position overview: Leidos’ Undersea Systems Division is seeking a QA/QC Manager in San Diego, CA to join a fast-paced R&D engineering group. This role is a unique opportunity to drive innovation in underwater vehicle systems, maritime sensors, subsea telemetry, and ISR solutions that support critical defense and national security missions at Naval Information Warfare Center, Pacific (NIWC PAC). Leidos’ USD is a recognized leader in C4ISR technologies, delivering innovative, mission-critical solutions across sensor networks, unmanned systems, and tactical platforms. We’re known for achieving “industry firsts” in the most challenging maritime domains. The selected candidate will be part of an elite, top-notch group and will be responsible for establishing, documenting, and enforcing a Quality Management System (QMS) across a multi-disciplinary project that integrates specialized sensor payloads into unmanned systems. This individual will...

General Atomics Electromagnetic Systems (GA-EMS) designs and manufactures first-of-a-kind electromagnetic and electric power generation systems for defense, space, and energy applications. Our portfolio includes Aircraft Launch and Recovery Equipment (ALRE) such as the Electromagnetic Aircraft Launch System (EMALS) and Advanced Arresting Gear (AAG), satellite buses and electro-optical payloads, high energy laser (HEL) weapon systems, and advanced nuclear reactor technologies. We have an exciting opportunity for a Mechanical Engineer II to join our multidisciplinary engineering team. Under limited supervision, this position is responsible for the design, analysis, integration, and test of mechanical and electromechanical systems across one or more of the following product areas:  ALRE – electromagnetic launch and recovery hardware, energy storage subsystems, power conversion enclosures, and shipboard mechanical integration Space Systems – satellite bus structures, mechanisms,...

General Atomics Electromagnetic Systems (GA-EMS) designs and manufactures first-of-a-kind electromagnetic and electric power generation systems. GA-EMS’ expanding portfolio of specialized products and integrated system solutions support critical fleet, space systems and satellites, missile defense, power and energy, and process and monitoring applications for defense, industrial, and commercial customers worldwide. We have an opening for a Mechanical Engineer for Nuclear Design opening with our team in Rancho Bernardo. With consultative direction, this position exercises considerable latitude in determining technical objectives for the review, research, design, development, and/or solution(s) for a designated engineering system(s) or project(s)/program(s). Functioning in an advisory or leadership role participates in the planning and oversight of the successful resolution and implementation of engineering problem(s) and provides direction and guidance to professional and support...

Saalex Corporation  is seeking multiple  Cybersecurity Engineer III in Tidewater, VA and San Diego, CA.  Saalex Corp., is an Engineering and Information Technology Services company with a focus on Test Range Operations and Management, Engineering and Logistics Services, Data Analytics and Business Intelligence Services and Information Technology Services. Founded in 1999 by Travis Mack, Saalex Solutions is a Service Disabled Veteran-Owned and Operated business with prime and subcontract expertise serving the Navy, Army, Air Force, NASA, corporate clients, and local governments. Saalex offers competitive compensation, career development, flexible work schedules and excellent benefits. Position Type:   Contingent on Contract Award. Salary:  $135k-$180k (depending on experience) The Cybersecurity Engineer III supports the Navy by designing, implementing, and securing enterprise IT and network systems in support of global Live Virtual...

Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence, and combat systems is seeking a Software Engineer III for work in San Diego, CA. Our engineering efforts provide the warfighter with common enterprise solutions to improve information sharing and combat effectiveness. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Our software teams employ an Agile Scrum process to rapidly design, code, and integrate capabilities into a mature Platform as a Service (PaaS) solution. Work includes developing and integrating applications that provision loosely coupled systems and capabilities which can be reused, discovered, and linked to build mission threads. DevSecOps and operations responsibilities also apply. The team uses Government Furnished DevSecOps tool suites (Atlassian products, such as JIRA, BitBucket, and...

Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence, and combat systems is seeking a Software Engineer III (OpenShift Subject Matter Expert) with 4 to 8 years of experience, for work in San Diego, CA. Our engineering efforts provide the warfighter with common enterprise solutions to improve information sharing and combat effectiveness. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Our software teams employ an Agile Scrum process to rapidly design, code, and integrate capabilities into a mature Platform as a Service (PaaS) solution. Work includes developing and integrating applications that provision loosely coupled systems and capabilities which can be reused, discovered, and linked to build mission threads. DevSecOps and operations responsibilities also apply. This position is specifically for an OpenShift...