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557 information system security engineer jobs found

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Security Clearance information system security engineer
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SAIC
Jun 01, 2026
Information System Security Engineer
SAIC VA
Description SAIC is seeking an Information System Security Engineer (ISSE) to join our team. This position is in Arlington, VA and requires an active Top Secret/SCI clearance . Job responsibilities include, but are not limited to: Implement and maintain cybersecurity controls in accordance with DoD policies, including NIST SP 800-53, RMF, and applicable STIGs. Monitor network and system security, analyze security events, and respond to incidents in a timely manner. Conduct vulnerability assessments and remediation activities using approved DoD tools and processes. Collaborate with IT, engineering, and program teams to ensure security requirements are integrated into system designs and operations. Assist in the preparation, review, and maintenance of security documentation, including System Security Plans (SSPs), Plan of Action & Milestones (POA&Ms), and risk assessments. Support the Risk Management Framework (RMF) process for system...
LMI
Mar 16, 2026
Information System Security Engineer (ISSE) AWS Cloud Security - Clearance Required
LMI NC
Overview LMI is seeking a skilled Information System Security Engineer (ISSE) with hands-on experience in AWS cloud security to provide advanced cybersecurity engineering and Risk Management Framework (RMF) support for Department of Defense (DoD) cloud-based systems. This position focuses on designing, implementing, and maintaining secure AWS environments aligned with DoD Cloud Computing Security Requirements Guide (CC SRG), NIST SP 800-53, and DISA STIGs/SRGs to support Authorization to Operate (ATO) efforts.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.   Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government,...
SAIC
Mar 11, 2026
Information System Security Engineer
SAIC VA
Description SAIC is seeking an Information System Security Engineer (ISSE) to provide information security support. This position is in McLean, VA and requires an active TS/SCI clearance with Polygraph . This Customer's office is the force of choice for the development of global infrastructure and delivery of solutions that drive influence operations. If you have specialized skills in information security and tech ops, this is the role for you. Job responsibilities include, but are not limited to: Support the Lifecycle Assessment and Authorization (A&A) process. Develop a Systems Security Plan (SSP). Assist and maintain a formal Information Security Program that includes recommendations on continuous improvement of the processes and architectures. Maintain and make accessible documentation of all operational and business process activities in the form of Standard Operating Procedures (SOPs). Monitor and track projects in the A&A queue....
Lockheed Martin
May 23, 2026
Information System Security Officer, Classified Cybersecurity
Lockheed Martin Sunnyvale, CA
Description: A Final Secret clearance is required to start with ability to obtain Top Secret clearance. Classified Cybersecurity ISSOs help secure lifesaving products and critical state-of-the-art engineering and manufacturing systems by applying cutting edge cybersecurity principles. Rising to the challenge of building a more secure world for the warfighter, space exploration, climate sustainability and commercial use. This position will perform duties as a Information Systems Security Officer at the Lockheed Martin Space facility in Sunnyvale, CA. The work that ISSOs do can be summarized in this way: - You will have a direct impact to national security, ultimately contributing to protecting your loved ones – this is dynamic, gratifying and impactful work! - You will have the opportunity to engage in all aspects of the cyber discipline - You can enjoy a work-life balance that allows for flex hours and a family-first culture. Key Responsibilities of this role includes: -...
Lockheed Martin
May 02, 2026
Information Systems Security Officer, Classified Cybersecurity
Lockheed Martin King of Prussia, PA
Description: Top Secret security clearance with ability to obtain SCI Eligibility and Polygraph. This position will perform duties as a Classified Cybersecurity Information Systems Security Officer (ISSO) for systems located at the LM Space facility in Valley Forge PA. The work that Cybersecurity ISSO’s do can be summarized in this way: - You will have a direct impact to national security, ultimately contributing to protecting your loved ones – this is dynamic, gratifying and impactful work! - You will have the opportunity to engage in all aspects of the cyber discipline - You can enjoy a work-life balance that allows for flex hours and a family-first culture. Key Responsibilities of this role includes: - Oversee day-to-day information system security operations including hardware and software implementations. - Carry out technical administration of IS in accordance with internal LM and customer security requirements, primarily Risk Management Framework (RMF). - Upkeep,...
Lockheed Martin
Apr 21, 2026
Information System Security Officer, Classified Cybersecurity
Lockheed Martin Herndon, VA
Description: This position requires TS/SCI clearance with the ability to obtain a CI polygraph. This position will perform duties as an Information Systems Security Officer at the Lockheed Martin Space facility in Herndon, Virginia. Candidates will typically have a Bachelor's Degree and 1+ years of experience. The work that ISSOs do can be summarized in this way: - You will have a direct impact to national security, ultimately contributing to protecting your loved ones – this is dynamic, gratifying and impactful work! - You will have the opportunity to engage in all aspects of the cyber discipline. - You can enjoy a work-life balance that allows for flex hours and a family-first culture. Key Responsibilities of this role includes: - Support day-to-day information system security operations including hardware and software implementations. - Carry out technical security administration of IS in accordance with internal LM and customer cybersecurity requirements, primarily the...
LMI
Apr 08, 2026
Army Information Systems Security Engineer (ISSE)
LMI Remote, UNAVAILABLE
Overview LMI, a consultancy dedicated to supporting government transformation and readiness, is seeking a skilled Information Systems Security Engineer (ISSE) to support the Naval Autonomous Data Collection System (NADACS) portfolio. Utilizing a blend of digital solutions, analytics, and security expertise, this role focuses on advancing mission success for the U.S. Army by providing robust system security engineering and cyber compliance solutions. Join LMI’s team and contribute to the secure deployment and modernization of NADACS—pivotal to U.S. Army operations and logistics. This role offers the chance to shape security processes, influence system compliance, and enable mission success through advanced cybersecurity solutions. Extensive collaboration and technical expertise are key for a security-first approach in protecting critical DoD systems. This position requires a  Secret clearance .   LMI is a new breed of digital solutions provider dedicated to...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Senior Systems Engineer (Nuclear Weapons Security)
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 2+ years of job-related experience, or a Master's degree and 6 months of job-related experience.   CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As a senior systems engineer for the NWS program, you’ll be a member of a cross functional team responsible for design, development, testing, installation, and support of electronic security systems that support Navy strategic...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Systems/Project Engineer – CLB Production Integration
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Role Overview The Systems Engineer supports integration of D5LE2 capabilities into Columbia (CLB) production by aligning technical execution, Program of Record (PoR) schedules, and delivery milestones across engineering, production, and program stakeholders. This...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Software Engineer (C++, Linux, bash scripting) - Active Secret clearance
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Bachelor's degree in Software Engineering, or related Science, Technology, Engineering or Mathematics field, plus a minimum of 2 years of relevant experience; or Master's degree, plus 6 months relevant experience.   CLEARANCE REQUIREMENTS:   Department of Defense active Secret security clearance is required at time of hire . Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Candidate must be local to the area and able to work onsite.  Responsibilities for this Position At General Dynamics Mission Systems, we build advanced technologies that keep our nation safe and our warfighters prepared. Our engineers tackle some of the most complex and consequential challenges in defense, delivering solutions that redefine...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Software Integration Engineer – Submarine Combat Systems
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Requires a Bachelor’s degree in Computer Science/Computer Engineering/ Software Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 2+ years of job-related experience, or a Master's degree and 6 months of job-related experience.  Must have Kubernetes or Linux.   CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Candidate must local to the area and able to work onsite.  Responsibilities for this Position Integration Engineer – Submarine Combat Systems Seeking an Integration Engineer to support the Common Infrastructure Services...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Systems Engineer – Entry Level - clearance required
General Dynamics Mission Systems, Inc Dedham, MA
Basic Qualifications Bachelor’s degree in Systems Engineering, or a related Science, Engineering or Mathematics field. Agile experience preferred.   CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As a systems engineer for Nuclear Command, Control and Communications (NC3), you’ll be a member of a cross functional team responsible for Designing, Implementing and Deploying the next generation of Strategic Weapon Systems. We encourage you to apply if you have any of these preferred skills or experiences: Model Based Systems Engineering (MBSE), Systems and Test...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Lead Engineer for Navy Undersea Warfare C2
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Bachelor's degree in Systems Engineering, or a related Science, Engineering or Mathematics field, plus a minimum of 8 years of relevant experience; or Master's degree, plus a minimum of 6 years of relevant experience. Must have Navy Undersea Warfare C2 experience.   CLEARANCE REQUIREMENTS:  Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Responsibilities Apply systems engineering processes including requirements analysis, architecture design, interface definition, and verification and validation (V&V) in support of this C2 Navy network program. Design, deploy, and manage containerized...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Systems Engineer – Entry Level
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Bachelor's degree in Systems Engineering, or a related Science, Engineering or Mathematics field.   CLEARANCE REQUIREMENTS:   Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire . Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As a systems engineer for Surface and Unmanned Vessels, you’ll be a member of a cross functional team responsible for developing, verifying, and evaluating new and upgraded designs for US Navy Surface Vessels.   We encourage you to apply if you have any of these preferred skills or experiences: requirements development, integration and testing, and data...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Chief Engineer – Torpedo Programs
General Dynamics Mission Systems, Inc Canonsburg, PA
Basic Qualifications Bachelor's degree in electrical, mechanical, or systems engineering or a related technical field and at least 10 years of related leadership experience in development and delivery of electromechanical assemblies and software for military applications. Applicants with a master's degree and a minimum of 8 years of related leadership experience are also eligible.   Department of Defense (DoD) Secret security clearance is required at time of hire – active and transferable. Top Secret clearance and eligibility for access to Special Access Program Information (SAPI) and Sensitive Compartmented Information (SCI), including willingness to submit to a polygraph, are desirable. Due to the nature of work performed in our facilities, U.S. citizenship is required.   Ability to travel is required.  Travel is estimated at 20% to 30%. Responsibilities for this Position General Dynamics Mission Systems (GDMS), a...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Advanced Software Engineer (Microservice Development)
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Bachelor's degree in Software Engineering, or related Science, Technology, Engineering or Mathematics field, plus a minimum of 5 years of relevant experience; or Master's degree, plus 3 years relevant experience.   CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is preferred, but must be obtainable within a reasonable amount of time after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position We’re looking for an experienced Software Engineer to join our team and help modernize a submarine combat system using cutting-edge technologies. If you’re passionate about microservices and enjoy solving complex problems, this is the role for you! What...
General Dynamics Mission Systems, Inc
Jun 01, 2026
Information Assurance Engineer
General Dynamics Mission Systems, Inc Bloomington, MN
Basic Qualifications Bachelor's degree in Engineering, or a related Science or Mathematics field, plus a minimum of 5 years of relevant experience; or Master's degree plus a minimum of 3 years of relevant experience.   CLEARANCE REQUIREMENTS:  Ability to obtain a Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Knowledge, Skills and Abilities: The ideal candidate will have experience with the development of embedded systems for avionics applications. Identify opportunities to apply AI for continuous improvement and innovation. Fully proficient understanding of systems engineering concepts, principles, and theories....
General Dynamics Mission Systems, Inc
Jun 01, 2026
Cyber Security Engineer - RMF (Active Secret Clearance)
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Bachelor's degree in Engineering, or a related Science or Mathematics field, plus a minimum of 5 years of relevant experience; or Master's degree plus a minimum of 3 years of relevant experience.   CLEARANCE REQUIREMENTS: Department of Defense active Secret security clearance is required .  Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required.  Candidate must be local to the office and able to work onsite.  Responsibilities for this Position ROLE AND POSITION OBJECTIVES As a Cybersecurity Systems Engineer, you will own the end-to-end RMF lifecycle for Navy information systems — from categorization through authorization and continuous monitoring. You will be the primary technical authority for building,...
SAIC
Jun 01, 2026
Principal Systems Engineer- DevSecOps
SAIC CA
Description SAIC is looking for a Principal System Engineer to serve as the primary DevSecOps engineer on a mission-critical Navy communications program. This is a high-visibility role where you will own the containerization strategy - from architecture and build to hardening and sustainment - for systems that directly support DoD operational readiness. If you live and breathe containers, love solving hard security and scalability problems, and want your work to matter at a national security level, this role was built for you. This is an ON-SITE role located in San Diego, CA Why This Role Stands Out You are THE container expert on the program - your knowledge helps shape the architecture Work on real-world, mission-critical Navy communication systems Collaborative team of engineers, program managers, and government stakeholders Fast-paced, innovative environment where technical leadership is recognized and rewarded San Diego, CA - one of the best...
SAIC
Jun 01, 2026
Security Engineer
SAIC ME
Description SAIC is seeking a Security Engineer to support the Portsmouth Naval Shipyard (PNSY) Information Technology Programs for the Dept of the Navy. This initiative leverages advanced technologies and integrates critical defense systems to optimize ship maintenance through IT applications, systems, and training, ensuring sustained mission success in naval ship maintenance operations. Work is performed on site in Kittery, ME. Role : Actively monitor, detect, and respond to cybersecurity threats and incidents within an organization. Utilize advanced security tools and technologies, such as Host-Based Security System (HBSS) and Security Information Event Management (SIEM) platforms, to continuously monitor network traffic, identify vulnerabilities, and detect suspicious activities. Conduct thorough investigations of security incidents, implement incident response protocols, and coordinate remediation efforts to mitigate potential risks. Collaborate with IT teams to...
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