485 information system security engineer jobs found

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...

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...

Description SAIC is seeking an Information System Security Engineer to provide cybersecurity leadership and governance across DoD IL5 and IL6 cloud platforms, ensuring secure design, continuous monitoring, and compliance across multiple cloud brokers. This role oversees RMF lifecycle execution, ATO sustainment, and security engineering alignment for cloud based development and production environments-while partnering closely with engineering, operations, and mission stakeholders to maintain a resilient, audit-ready security posture. In this role, you'll contribute to Naval Operational Architecture (NOA), working alongside engineers and operators to deliver resilient, forward-leaning solutions in support of national defense. Job Duties Lead RMF lifecycle execution for IL5/IL6 cloud systems, including control inheritance, evidence generation, and continuous monitoring. Manage ATO packages, ensuring timely renewals, POA&M tracking, and alignment with DoD cybersecurity...

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....

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,...

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...

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:...

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...

Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. For over 70 years, the Fleet Ballistic Missile (FBM) team has supported the Navy’s...

Description: What We're Doing As a part of the Lockheed Martin community, we take on challenges and find solutions using creativity and collaboration. If you’re looking to be a part of a passionate team solving these complex problems, then Rotary and Mission Systems is the place for you. The Work Here at Lockheed Martin's Rotary and Mission Systems (RMS) business in Moorestown, NJ we are responsible for integrating, testing, and demonstrating some of our customers most complex systems. As the Engineer in our System Integration and Test (SI&T) department, you will be a part of the team responsible for high level system design, system test planning and test execution for our key customers, including US Navy, US Coast Guard, US Missile Defense Agency, US Air Force, and international customers. In this position, the successful candidate will experience responsibilities in one or more of the following domains: • System-level integration of software and hardware components...

Overview LMI is actively seeking a Junior Back-End Software Application Engineer. This role involves working directly with U.S. government military and civilian customers and our analytic partners to translate analytic needs into responsive, high-performance software applications within LMI’s Modeling, Simulation, Prototyping, Wargaming, & Analysis platform, RAPTR®. This position is on-site in Colorado Springs, CO.   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,...

Description: Lockheed Martin Aeronautics Air Mobility and Maritime Missions in Marietta, GA is seeking a full-time Cyber Systems Security Engineer. The System Security Engineer translates security policies and architectural intent into concrete, verifiable system, subsystem, and component requirements. Leveraging a solid systems engineering foundation, the SSE supports derivation, allocation, and implementation of security functional and assurance requirements across the system, subsystem, and component levels. This role participates in threat modeling and vulnerability analysis activities, designs mitigation strategies, and authors verification and validation test procedures associated with RMF Artifacts. By conducting security test and evaluation, this position will confirm that the system meets its security objectives and complies with applicable RMF policies and standards. The engineer also creates and maintains security views within system models and collaborates closely...

Description: Join the Lockheed Martin Aeronautics Field Sustainment (AFS) team as an In-Country F-16 Avionics Intermediate Shop (AIS) Field Service Engineer (FSE)/ Contractor Engineering and Technical Services (CETS). This position is located in Muafaq Salti Air Base, Jordan. Note: This position is located in Jordan and is an accompanied assignment - employee +1. This position will provide on-site advice, liaison, and informal training in the installation, operation and maintenance of equipment and systems related to F-16 on and off the aircraft. The objective of the FSE is to elevate the technical skill and abilities of the personnel responsible for the operation and maintenance of F-16 aircraft and associated equipment/systems to a level of self-sufficiency. What You Will Be Doing Specific tasks include but are not limited to the following: • Provide on-site/on-equipment informal unit training to the component level on installation, maintenance and operating...

Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. Are you a Senior DevSecOps Engineer for something different? In this role you will: +...

Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. For over 70 years, the Fleet Ballistic Missile (FBM) team has supported the Navy’s...

Description SAIC is seeking qualified external candidates to support the General Services Administration (GSA) Federal Acquisition Service (FAS) Acquisition & Ordering System (AOS) program. The GSA FAS AOS task order will deliver operations and maintenance (O&M), Site Reliability Engineering (SRE), DevSecOps, minor enhancements, and ongoing agile development services for FAS acquisition and ordering systems. All positions are contingent upon contract award. Award is anticipated late summer 2026. Positions are expected to be primarily remote allowing for work from anywhere within the United States. Program Position and Skillset List: Software Developers - Applications (Associate / Senior / SME) Software Developers - Systems Software (Associate / Senior / SME) Computer Systems Analysts (Associate / Senior / SME) Computer Systems Engineers / Architects (Associate / Senior / SME) Site Reliability Engineers (SRE)...

Description JOB DESCRIPTION: SAIC is seeking an ESS Terminals Systems Engineer to join our team in El Segundo, CA. SAIC is sub-contractor on the Military Satellite Communications (MILSATCOM) Systems Engineering, Integration and Test (MSEIT) contract. The ESS Terminals Systems Engineer will play a critical role in designing, implementing, and maintaining complex infrastructure, platform, and software systems that support National Leadership Authority capabilities. This position requires a deep understanding of system architecture, Protected SATCOM Terminal configurations, and security protocols to ensure robust, scalable, and secure environments. The engineer will collaborate closely with outside organizations to analyze system requirements and oversee development, delivery, and implementation of those requirements. Additionally, the role involves leading technical projects and contributing to the development of best practices and documentation. An ideal candidate would be...

Description JOB DESCRIPTION: SAIC is seeking a Configuration Management Specialist to join our team in El Segundo, CA. SAIC is sub-contractor on the MSEIT contract The MILSATCOM Systems Engineering, Integration, and Test (MSEIT) effort provides leading edge Systems Engineering & Integration (SE&I) for the US Space Force's Space Systems Center (SSC). We support the Space Force's acquisition of state of the art satellite communications systems, providing global secure, 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. Key Responsibilities: Draft, implement, endorse and promulgate leadership's direction and vision regarding Configuration Management (CM) Ensure system changes are properly identified, documented,...

Description SAIC is seeing an ESS Terminals Senior Systems Engineer to join our team in El Segundo, CA. SAIC is sub-contractor on the Military Satellite Communications (MILSATCOM) Systems Engineering, Integration and Test (MSEIT) contract. The ESS Terminals Senior Systems Engineer will play a critical role in designing, implementing, and maintaining complex infrastructure, platform, and software systems that supports National Leadership Authority capabilities. This position requires a deep understanding of system architecture, Protected SATCOM Terminal configurations, and security protocols to ensure robust, scalable, and secure environments. The engineer will collaborate closely with outside organizations to analyze system requirements and oversee development, delivery, and implementation of those requirements. Additionally, the role involves leading technical projects and contributing to the development of best practices and documentation. An ideal candidate would be someone...

Description SAIC is seeking a highly motivated and experienced Senior Systems Engineer to join our team supporting the USMC in Hanahan, SC. The ideal candidate will leverage their technical expertise to design, develop, test, and integrate systems that enhance the performance and reliability of the Combat Data Network or MAGTF Common Handheld for mission-critical operations. This role requires strong analytical skills, collaborative teamwork, and a deep understanding of system engineering standards and practices in support of Department of War (DoW) mission systems. Job Duties: Provide systems engineering support for the development, integration, testing, and sustainment of Marine Corps systems. Conduct detailed systems analysis to define system design architecture, specifications, and operational workflows aligned with customer requirements. Design, document, and manage technical baselines, ensuring adherence to DoW standards and best practices. Develop and execute...