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23 system cybersecurity engineer jobs found

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LMI
Jul 21, 2026
Cybersecurity Information System Security Engineer - Clearance Required
LMI Fort Belvoir, VA
Overview LMI is seeking a skilled Senior Cybersecurity Information Systems Security Engineer (ISSE) to support US Army  Capability Program Executive (CPE) Gound   office  at Ft. Belvoir, Virginia. The ISSE will drive efforts that support software and hardware cybersecurity Risk Management Framework (RMF) Authority to Operate (ATO).     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, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and...
SAIC
Jul 27, 2026
Cybersecurity Engineer - Cloud
SAIC VA
Description SAIC is a trusted leader in delivering advanced command and control capabilities across the Department of the Air Force, bringing deep expertise in how cutting edge technologies are engineered, secured, and delivered to the fight. At the center of this mission, the Common Mission Control Center (CMCC) unifies data, sensors, mission applications, cloud based services, and emerging AI enabled automation to give warfighters a decisive edge-turning complex, multidomain information into fast, clear, and actionable decisions in the moments that matter most. The CMCC System Facilitator contract positions SAIC to accelerate how new capabilities are integrated, tested, secured, and transitioned into operational use, working side by side with operators, engineers, Capability Providers, and government teams to ensure every delivery strengthens mission readiness. This effort offers the chance to directly shape how the Air Force sees, decides, and acts across all domains-making a...
SAIC
Jul 27, 2026
Cybersecurity Engineer - Cloud
SAIC CA
Description SAIC is a trusted leader in delivering advanced command and control capabilities across the Department of the Air Force, bringing deep expertise in how cutting edge technologies are engineered, secured, and delivered to the fight. At the center of this mission, the Common Mission Control Center (CMCC) unifies data, sensors, mission applications, cloud based services, and emerging AI enabled automation to give warfighters a decisive edge-turning complex, multidomain information into fast, clear, and actionable decisions in the moments that matter most. The CMCC System Facilitator contract positions SAIC to accelerate how new capabilities are integrated, tested, secured, and transitioned into operational use, working side by side with operators, engineers, Capability Providers, and government teams to ensure every delivery strengthens mission readiness. This effort offers the chance to directly shape how the Air Force sees, decides, and acts across all domains-making a...
SAIC
Jul 13, 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 accreditation and...
SAIC
Jul 08, 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...
General Dynamics Mission Systems, Inc
Jun 17, 2026
Cyber Security Analyst - SIEM Engineer
General Dynamics Mission Systems, Inc San Antonio, TX
Basic Qualifications Bachelor's degree in Engineering, or a related Science 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.   CLEARANCE REQUIREMENTS: Current or active Department of Defense Top Secret clearance with SCI eligibility required with ability to obtain a Polygraph 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   We are seeking a highly skilled and experienced Cyber Security Analyst / SIEM Engineer to join our SPRINT Next program team in San Antonio, Texas . In this position, you will serve as a security engineer responsible for administering and...
General Dynamics Mission Systems, Inc
Jun 15, 2026
Senior Network Cyber Engineer
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 2 years of relevant experience; or Master's degree, plus 6 months of relevant 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 ROLE AND POSITION OBJECTIVES: As a Senior Network and Cyber System Engineer on the MIT team, you will execute cybersecurity operations and network engineering tasks across secure environments. This is a dual-role position split evenly between cybersecurity engineering and network engineering. You will contribute to...
SAIC
Jun 15, 2026
Information Systems Security Engineer
SAIC NM
Description SAIC and the Engineering, Development, Integration and Sustainment (EDIS) team are looking for an Information Systems Security Engineer (ISSE) to work with our Space Systems Command (SSC) customer at Kirtland AFB in Albuquerque, New Mexico. We want you to join our qualified and diverse team of professional Cybersecurity SMEs, where you can apply your talents to take our team to new levels of performance. You will leverage your subject matter expertise in applications, systems, network cybersecurity, and DoD Risk Management Framework (RMF) requirements to provide expert ISSE support to various satellite ground command and control systems at multiple classification levels, undergoing system modernization - to include migration to the cloud and co-hosting multiple mission partners. Steps to success: Install, configure, and troubleshoot solutions with a wide selection of Cyber industry tools Work with identity management/rights management tools and implementation...
General Dynamics Mission Systems, Inc
Jun 06, 2026
Information Assurance Engineer
General Dynamics Mission Systems, Inc Scott Air Force Base, IL
Basic Qualifications Bachelor's degree in Engineering, or a related Science 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 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   What You’ll Experience: Hands-on work with the  system development life cycle  and  Risk Management Framework (RMF) . Implementing  Security Technical Implementation Guides (STIGs)  and running security assessments of a mission critical system. Building RMF documentation, including security plans, testing plans, and compliance...
SAIC
Jun 01, 2026
Senior Security Engineer
SAIC ME
Description SAIC is seeking a Senior 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. W ork 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...
SAIC
Jun 01, 2026
Senior Cyber Engineer
SAIC ME
Description SAIC is seeking a Senior 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: Architects, plans, configures, deploys, maintains, and upgrades COTS/GOTS and custom toolsets to address vulnerabilities and/or implement security controls. Applies a combination of expert engineering knowledge of enterprise IT and security solutions to design, develop and/or implement solutions to ensure they are consistent with enterprise architecture security policies and support full spectrum military cyberspace operations. Designs, tests, and implements secure operating systems, networks, security monitoring, tuning and...
SAIC
May 20, 2026
Senior Desktop Engineer with macOS focus
SAIC VA
Description Introduction Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities of the Defense Counterintelligence and Security Agency (DCSA). The Air Force Space and Intel (AFSI) Business Group of SAIC is seeking a Senior Desktop Engineer with macOS focus to support a transformational infrastructure program for DCSA out of Quantico, VA. SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000 facilities involved in classified work throughout the DoD and 31 Federal agencies. Specifically, on the DCSA One IT program, SAIC will provide an enterprise IT solution that delivers highly secured and adaptable IT...
General Dynamics Mission Systems, Inc
May 06, 2026
Advanced Information Assurance Engineer
General Dynamics Mission Systems, Inc Pittsfield, MA
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 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   What you’ll experience: • Hands-on experience with systems engineering , including creating designs, use cases, and requirements. • Developing and executing test procedures to ensure systems meet expectations. • Collaborating within integrated teams and working on security engineering tasks throughout the project life cycle. •...
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,...
General Dynamics Mission Systems, Inc
Apr 14, 2026
Senior Systems Engineer
General Dynamics Mission Systems, Inc Scottsdale, AZ
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 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 We are seeking a Systems Security Engineer who has experience in the design and development of NSA-certified Cybersecurity devices.     Key Responsibilities: Design and develop specifications for mission-critical NSA-certified Cybersecurity devices...
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
Mar 11, 2026
Information Assurance Engineer
General Dynamics Mission Systems, Inc Scottsdale, AZ
Basic Qualifications Requires a Bachelor’s degree in Engineering, or a related Science, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience.     CLEARANCE REQUIREMENTS:  Department of Defense TS/SCI 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 General Dynamics Mission Systems has an opening for an Information Assurance Engineer in Scottsdale, AZ.   Job Summary: Are you passionate about systems engineering and cybersecurity? We're looking for a skilled professional to join our team, ensuring secure, compliant, and innovative systems in a classified...
SAIC
Jul 27, 2026
Network Engineer Principal
SAIC HI
Description SAIC is seeking a Senior Network Engineer located at Camp Smith in Hawaii to support the U.S. Pacific Command (USPACOM) J637 Joint Exercise Branch to design, integrate, and execute exercise network architectures that align with operational requirements and the broader theater architecture in support of classified and unclassified joint and multinational training and exercise environments across the Pacific region. The Senior Network Engineer will be responsible for but not limited to the following duties: Integrate USPACOM J6 owned networks. Design, develop, and execute scalable, secure exercise network architectures that align with operational requirements and the broader theater architecture in support of the Joint Exercise Program (JEP). Collaborate with J68, J66, and J76 engineers and external stakeholders to deliver executable architectures. Resolve technical architecture issues alongside the J6 Chief Technical Officer (CTO)....
SAIC
Jul 27, 2026
Security Control Assessor
SAIC VA
Description SAIC is seeking a highly skilled and motivated Senior Security Control Assessor (SCA) to support the cybersecurity assessment and compliance needs of mission-critical IT systems for the MAJESTIC Joint Program Office (JPO) Team. The successful candidate will perform independent assessments of security controls to ensure compliance with federal cybersecurity policies, standards, and frameworks, such as the Risk Management Framework (RMF), NIST SP 800-53, and others, to manage and mitigate risks to sensitive and classified systems. This role will require working closely with Information System Security Managers (ISSMs), Information System Owners (ISOs), and system administrators to conduct technical reviews, evaluate security controls, and assist with Authorization and Accreditation (A&A) efforts. This role requires on-site support in Springfield, VA. Key Responsibilities: Conduct independent, objective, and robust assessments of IT systems...
Lockheed Martin
Jul 17, 2026
Cyber Security Engineer Senior (Represented)
Lockheed Martin Moorestown, NJ
Description: WHAT WE’RE DOING At Lockheed Martin's Rotary and Mission System's Cyber Resiliency organization, we are dedicated to engineering and deploying cutting-edge cyber defense solutions across our corporation. Our focus on cybersecurity is paramount to ensuring mission success for our customers, even in the face of evolving cyber threats. WHO WE ARE Lockheed Martin is driven by innovation, integrity, and a commitment to excellence. We believe in applying the highest standards of business ethics and visionary thinking to everything we do. As part of our team, you will collaborate with a cross functional team of technical professionals including software and systems engineers and radar operators to maintain the cybersecurity posture of the Space Fence Radar System. WHO YOU ARE We are looking for individuals who are passionate about cybersecurity and eager to contribute their skills and expertise to our mission. You should have demonstrable knowledge in...
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