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600 information system security engineer jobs found

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Security Clearance Onsite information system security engineer
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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....
SAIC
Jun 08, 2026
IT Systems Security Engineer
SAIC CO
Description Join SAIC's team and play a pivotal role in defending North America. We are seeking an experienced Information System Security Engineer (ISSE) to lead cybersecurity and compliance efforts for the critical North American Aerospace Defense Command and United States Northern Command (N-NC) Information Technology (IT) Enterprise Services (NITES) contract. In this role, you will ensure that customer systems remain secure, compliant, and mission-ready for any challenge. The ISSE is responsible for designing, developing, and implementing secure information systems that support mission operations. You will collaborate with multidisciplinary teams, including Information Systems Security Managers (ISSMs), systems engineers, and government stakeholders, to integrate effective security controls and ensure systems remain resilient against evolving threats and vulnerabilities. Responsibilities The selected candidate will be responsible for the following: Apply system...
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...
SAIC
Jun 15, 2026
Information Systems Security Engineer
SAIC VA
Description SAIC is seeking a highly motivated, detail-oriented, and experienced Information Systems Security Engineer (ISSE) to join our lead systems integrator team in Arlington, Virginia. The ISSE will be responsible for evaluating system vulnerabilities, deploying firewalls and encryption, monitoring for breaches, and developing security policies to ensure data integrity and confidentiality. The ISSE will implement the cybersecurity posture and ensure compliance of classified information systems in support of Department of the Air Force's (DAF) Cloud-Base Command and Control (CBC2) Program. The ideal candidate will have a strong technical background in information security and a thorough understanding of certification and accreditation process IAW NIST 800-53 and the Risk Management Framework (RMF). The successful candidate will have excellent communication, organizational and problem-solving skills. They will be expected to continually balance and adjust work priorities 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...
SAIC
Jun 10, 2026
Cloud Information Systems Security Engineer (ISSE)
SAIC VA
Description We are seeking a skilled Cloud Information Systems Security Engineer (ISSE) to join our multi-million dollar National Intelligence program supporting the Cloud Investment Multi-Cloud Management (CIMM) program. As a contributor to the Intelligence Community's first multi-cloud initiative, you will be at the epicenter of emergent cloud computing technologies, establishing a foundation that will evolve to include all agencies within the IC and develop, implement, and maintain security engineering processes and tools for cloud-based systems. The ISSE will ensure that the organization's critical systems and data remain secure and compliant with all relevant government and industry standards. This role involves working closely with system architects, administrators, and mission partners to identify security risks, implement mitigations, and enhance the overall security posture of a highly dynamic cloud environment. Your responsibilities will include the following:...
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 16, 2026
CWL Deputy Chief Engineer (Sr Advanced Systems Engineer)
General Dynamics Mission Systems, Inc Manassas, VA
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 ontainable within a reasonable time from 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 Duties and Responsibilities Coordinates requirements development, hardware/software design, verification, and validation activities Manages technical deliverables and coordinates technical review boards to review decisions with broad program...
General Dynamics Mission Systems, Inc
Jun 16, 2026
Advanced SW Engineer – TS Required - $5,000 Sign-On Bonus
General Dynamics Mission Systems, Inc Dedham, MA
Basic Qualifications Requires a Bachelor’s degree in Software 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 Top 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 software engineer for Maritime and Strategic Systems, you’ll be a member of a cross functional team responsible for Design, Development, and Test of a Strategic Deterrent System.   We encourage you to apply if you have...
General Dynamics Mission Systems, Inc
Jun 16, 2026
MDA Systems Engineer | Systems Design and Requirements Capability
General Dynamics Mission Systems, Inc Huntsville, AL
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 JOB DESCRIPTION: The System Engineering & Integration Team (SE&IT) is seeking a Systems Engineer to join the System Design and Requirements Capability team in Huntsville, AL. The successful candidate will support cross-functional teams to develop system level architecture and requirements to influence Missile...
General Dynamics Mission Systems, Inc
Jun 16, 2026
Space Force – Missile Tracking 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 TOP SECRET security clearance with the ability to obtain a TOP SECRET with Polygraph eligibility 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 for this Position As a Missile Tracking Systems Engineer for the US Space Force Space Development Agency (SDA) Ground, Management and Integration (GMI) program, you will be a...
General Dynamics Mission Systems, Inc
Jun 16, 2026
26-206 C2BMC Anti-Tamper Systems/Hardware Engineer
General Dynamics Mission Systems, Inc Colorado Springs, CO
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. Responsibilities for this Position Anti-Tamper Systems/Hardware Engineer Job Overview We are seeking a highly skilled Anti-Tamper Systems/Hardware Engineer to support the Missile Defense Agency (MDA) and the Command and Control, Battle Management, and Communications (C2BMC) program. This role focuses on developing and implementing Anti-Tamper (AT) and program protection solutions to safeguard critical program information and components. The ideal candidate will have experience in system security engineering, anti-tamper methodologies, and defense exportability concerns, as well as strong analytical and communication skills. Position Responsibilities Collaborate with MDA and C2BMC leadership to implement...
General Dynamics Mission Systems, Inc
Jun 16, 2026
26-206 C2BMC Anti-Tamper Systems/Hardware Engineer
General Dynamics Mission Systems, Inc Colorado Springs, CO
Basic Qualifications Bachelor's degree in Systems Engineering, or a related Science, Engineering 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.   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: Relocation Package As a systems engineer for C2BMC , you’ll be a member of a cross functional team responsible for Coordinating with the Missile Defense Agency to conduct high-level Anti-Tamper and Threat Management Assessments.   We encourage you to apply if you have any of these preferred...
General Dynamics Mission Systems, Inc
Jun 16, 2026
Systems Engineer (Mid-Level)
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. Agile experience preferred,   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 be local to the area and able to work onsite.  Responsibilities for this Position Join us, and make the world’s most advanced Fire Control System even smarter! As a Mid-level Systems Engineer for Fire Control Systems group, you’ll be a member of a...
General Dynamics Mission Systems, Inc
Jun 16, 2026
Senior System Security Engineer (SSE)
General Dynamics Mission Systems, Inc Boise, ID
Basic Qualifications Education Requirements: 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.   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 ROLE AND POSITION OBJECTIVES: A successful candidate will possess implemtation level details of vulnerabilities and their countermeasures across a wide range of system types including microcontrollers, FPGA based system-on-chip (SoC) system, and...
General Dynamics Mission Systems, Inc
Jun 16, 2026
Configuration / Release Engineer — AI Reliability Engineering
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Bachelor's degree in Engineering, a related specialized area or field is required or equivalent combination of education and relevant work experience plus a minimum of 8 years of relevant experience; or Master's degree plus a minimum of 6 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 Own Configuration baselines. Establish and maintain baselines for all AI artifacts — code, prompt libraries, model versions, agent configurations, training datasets, ontologies, policies, and documentation. Every artifact has a version, an...
General Dynamics Mission Systems, Inc
Jun 16, 2026
Infrastructure Systems Engineer
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 Systems Engineer for the Nuclear Weapons Security program, you’ll be a member of a cross functional team responsible for designing advanced security and information systems, as well as helping to maintain deployed systems....
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