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508 information systems security engineer jobs found

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SAIC
Sep 02, 2026
Information Systems Security Engineer (ISSE) Architect
SAIC VA
Description SAIC is seeking an experienced Information Systems Security Engineer (ISSE) to support the MAJESTIC Joint Program Office (JPO) by performing advanced security engineering and architectural design for mission-critical IT systems. In this role, the ISSE will lead the design, development, implementation, and validation of security architectures , ensuring all security controls are integrated into system engineering processes across the full lifecycle-from requirements development to deployment and sustainment. The ISSE will collaborate closely with program leadership, system owners, developers, ISSMs/ISSOs, enterprise architects, and cybersecurity operations teams to ensure systems meet federal security requirements, including NIST 800-53, RMF, and customer-specific A&A frameworks such as ICD 503 and DAAPM. This role requires on-site support in Springfield, VA . Key Responsibilities: Design and engineer secure system architectures, integrating...
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...
SAIC
Sep 02, 2026
Information Systems Security Engineer (ISSE) Edge
SAIC VA
Description SAIC is seeking two experienced Information Systems Security Engineers (ISSEs) to support the MAJESTIC Joint Program Office (JPO) -one serving as a traditional enterprise ISSE and one serving as a specialized Edge ISSE focused on tactical-edge environments. Together, these engineers will lead advanced security engineering and architecture efforts for MAJESTIC's mission-critical systems, including those operating in distributed, low-bandwidth, intermittently connected, and operationally constrained mission scenarios. The Enterprise ISSE will design, develop, implement, and validate security architectures for MAJESTIC's core systems and enterprise environments, ensuring security controls are integrated throughout the full engineering lifecycle-from requirements and high-level architecture through deployment, sustainment, modernization, and ATO maintenance. The Edge ISSE , leveraging the job functions described in ISSE_Edge, will engineer cybersecurity...
LMI
Aug 05, 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
Aug 19, 2026
Information System Security Engineer
SAIC CO
Description SAIC seeks an Information System Security Engineer (ISSE) to support the U.S. Space Force, Space Systems Command, in the operational maintenance and sustainment of ground-based radars critical to U.S. and Allied strategic missile surveillance, warning, defense, and space surveillance missions. Reporting to the SAIC Program Manager and Chief Engineer, this engineer plans, develops, and delivers PARCS and UEWR assessments of systems and networks to identify deviations from acceptable configurations, enclave policy, or local policy, and designs and implements remediation solutions. This position is located in Colorado Springs, Colorado. Job Duties Build security architectures, integrate new architectural features into existing infrastructures, design cybersecurity architectural artifacts, and provide engineering recommendations to resolve integration and testing issues. Develop cyber requirements to DoD 8570/8140 standards. Perform vulnerability assessments and...
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
Sep 21, 2026
UI / Mission Planning Software Engineer, Senior / C++ - Orlando, FL
Lockheed Martin Orlando, FL
Description: You will be a Senior Software Engineer on our team at Lockheed Martin. Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. What You Will Be Doing The role will require and focus on building...
Lockheed Martin
Sep 21, 2026
Cyber Software Engineer Embedded, Sr - Top Secret Required
Lockheed Martin Grand Prairie, TX
Description: You will be a Cyber Software Engineer, EMBEDDED in the Program Protection Organization. Our organization oversees all aspects of Anti-Tamper and embedded Cybersecurity across Missiles and Fire Control. We are chartered with providing the skills and innovative technologies to develop, design, produce and sustain secure products across our Lines of Business. What You Will Be Doing As the Cyber Software Engineer you will be responsible for supporting a broad range of challenges in a dynamic team environment and the ability to work with Cyber Exploitation Engineers, Cyber System Security Engineers and system engineers across Lockheed Martin MFC to develop new exploitation software tools, and maintain current capabilities. Your responsibilities will include: • Leverage your technical, and interpersonal skills in a structured team framework and work in a cross-functional engineering Team environment. • Employ a high level of productivity and responsiveness,...
Lockheed Martin
Sep 21, 2026
Senior Systems Engineer-Combat Systems
Lockheed Martin Mount Laurel Township, NJ
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 The Senior Systems Engineer will have the opportunity to design, integrate/test and conduct data analysis to assess system performance of the Command, Control and Communications (C3) systems. The C3 systems perform multiple critical functions such as radar and sensor management, track filtering, track management including correlation/association, control of multiple communication links, threat evaluation and prioritization, and command of weapon systems for target engagement or assignment. The successful candidate will have experience and/or knowledge of systems engineering principles, algorithm development, and data analysis. This position is located at a facility that...
Lockheed Martin
Sep 21, 2026
Systems Engineer-Combat Systems
Lockheed Martin Mount Laurel Township, NJ
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 The Systems Engineer will have the opportunity to design, integrate/test and conduct data analysis to assess system performance of the Command, Control and Communications (C3) systems. The C3 systems perform multiple critical functions such as radar and sensor management, track filtering, track management including correlation/association, control of multiple communication links, threat evaluation and prioritization, and command of weapon systems for target engagement or assignment. The successful candidate will have experience and/or knowledge of systems engineering principles, algorithm development, and data analysis to troubleshoot and evaluate. This position is located at a...
Lockheed Martin
Sep 21, 2026
Senior Electrical Engineer - Test Station Design
Lockheed Martin Liverpool, NY
Description: The Work As a Test Station Design Engineer, you won't just be sitting behind a screen—you are the bridge between design and reality. You will own the complete lifecycle (design, build, integration, and validation) of custom, automated test environments used to validate cutting-edge RF, Digital, Analog, and Power systems. Your day-to-day will involve: * Designing automated test programs, sim/stim test systems, and bench-top manual tests for world-class radar technology. * Developing custom test solution hardware and cable designs. * Collaborating directly with cross-functional teams to present design documentation for critical customer reviews. * Solving complex component obsolescence puzzles to keep testing infrastructure ahead of the curve. Who We Are Lockheed Martin Radar and Mission Systems (RMS) in Syracuse, NY is a powerhouse of innovation. We shape the future of defense through active electronically scanned array (AESA) radars and integrated missile...
Lockheed Martin
Sep 21, 2026
Display Systems - Senior Systems Engineer
Lockheed Martin Mount Laurel Township, NJ
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 Lockheed Martin Rotary Mission Systems in Moorestown, New Jersey is seeking a full time Systems Engineer. In this role, you will define mission critical requirements, develop windows and user interfaces for military personnel user experience, and integrate new capabilities into the premier self-defense system for the United States and allied Navies, the Aegis Combat System. The successful candidate will have experience and/or knowledge of Java, C++, or Python and Linux/UNIX operating systems, experience in requirement development, experience user interface development, and experience in issue investigation. Must be a US Citizen; this position will require a government security...
Lockheed Martin
Sep 21, 2026
Systems Engineer - Senior
Lockheed Martin Huntsville, AL
Description: Lockheed Martin "Ahead of Ready" 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. The Lockheed Martin Next Generation Interceptor...
Lockheed Martin
Sep 21, 2026
Software Engineer - Embedded, Dallas, TX - Associate
Lockheed Martin Grand Prairie, TX
Description: Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. As a Software Engineer Asc at MFC, you will join one of the largest networks of software professionals, implementing cutting edge technologies on...
Lockheed Martin
Sep 21, 2026
Cyber Systems Security Engineer
Lockheed Martin Manassas, VA
Description: WHAT WE’RE DOING At Lockheed Martin - Rotary and Mission Systems, we're shaping the future of Undersea Warfare (USW) systems. Our mission is to develop innovative technologies that secure our nation’s defense. We are integrating state-of-the-art cybersecurity solutions into mission-critical systems to ensure resilience, integrity, and continued superiority under the sea and across domains. THE WORK As a Cyber Systems Security Engineer, you will take a leadership role in enhancing cybersecurity across SWFTS (Submarine Warfare Federated Tactical Systems). You’ll drive the development and integration of modern cyber solutions that protect and empower critical Department of Defense (DoD) assets. Key responsibilities include: Designing, implementing, and maintaining security controls to protect system confidentiality, integrity, and availability Leverage guidance from Risk Management Framework (RMF), Security Requirements Guides (SRG), and Security Technical...
Lockheed Martin
Sep 21, 2026
Senior Electrical Engineer (Level III) - Top Secret Clearance
Lockheed Martin Littleton, CO
Description: Position details: Location: Littleton, CO Work Schedule: 9x80 Position type: Full-time onsite (this is not a hybrid position) 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...
Lockheed Martin
Sep 21, 2026
1LMX DevSecOps, Senior / C++ - Orlando, FL
Lockheed Martin Orlando, FL
Description: Lockheed Martin’s Software Factory, a leader in DevSecOps-driven software engineering serving the aerospace and defense sectors. The Lockheed Martin Software Factory delivers customized solutions to meet the needs of our diverse customers — from commercial to classified — in order to scale across multiple programs. Embedding (Development, Security and Operations) DevSecOps in every step of our software development keeps our clients at the cutting edge of cybersecurity. Secure coding is a fundamental principle behind our DevOps philosophy to make sure the best cyber security practices are considered at every step of development. We are focused on architecting software for frequent delivery. Modular open systems architecture has been key to our systems for many years, and we are using new technologies such as container orchestration with Kubernetes to drive modularity through containerized microservice architecture all the way into the deployed system. Not only does...
Lockheed Martin
Sep 21, 2026
Systems Engineer
Lockheed Martin King of Prussia, PA
Description: WHAT WE'RE DOING Want to work with cutting-edge technologies in a fun, fast-paced, and dynamic environment? Are you a problem solver that takes on challenges that others think are impossible? If you answered yes to these questions, then we invite you to join Lockheed Martin Rotary and Missions Systems (RMS) as a Systems Engineer! Lockheed Martin is a global leader in aerospace, defense, and technology solutions. You will be joining Lockheed Martin Rotary and Mission Systems supporting the Tactical Tomahawk Weapons Control System (TTWCS) program in Valley Forge, PA. THE WORK We are in search of an experienced Systems Engineer to join our team. As an Engineering Professional on the TTWCS program, you will perform system engineering efforts leading change packages to the existing software system, performing requirements development, interface design, system architecture, and aid in the design and development of future systems. The work location will be in...
Lockheed Martin
Sep 21, 2026
1LMX DevSecOps / C++ - Orlando, FL
Lockheed Martin Orlando, FL
Description: Lockheed Martin’s Software Factory, a leader in DevSecOps-driven software engineering serving the aerospace and defense sectors. The Lockheed Martin Software Factory delivers customized solutions to meet the needs of our diverse customers — from commercial to classified — in order to scale across multiple programs. Embedding (Development, Security and Operations) DevSecOps in every step of our software development keeps our clients at the cutting edge of cybersecurity. Secure coding is a fundamental principle behind our DevOps philosophy to make sure the best cyber security practices are considered at every step of development. We are focused on architecting software for frequent delivery. Modular open systems architecture has been key to our systems for many years, and we are using new technologies such as container orchestration with Kubernetes to drive modularity through containerized microservice architecture all the way into the deployed system. Not only does...
Lockheed Martin
Sep 21, 2026
Senior Full Stack Java Software Engineer - Clearance Required
Lockheed Martin MD
Description: This position is participating in our External Referral Program . If you know somebody who may be a fit, click here to submit a referral. If your referral is hired, you'll receive a payment! code-extrefer Senior Full Stack Java Software Engineer - Clearance Required WHAT WE'RE DOING • Join Lockheed Martin Rotary and Mission Systems, Cyber & Intelligence, where we foster innovation and integrity. • As a Senior Full Stack Software Engineer, you'll be empowered to create "new realities" and pioneer solutions that break boundaries. • Benefit from the support of a global technology leader that values innovative thinking and provides the resources to turn ideas into reality. • Build on our proud legacy of achievement and contribute to shaping the future of aerospace, defense, and security solutions. THE WORK TKO provides systems engineering, software development, data science and cloud development and engineering services to the Cyber Infrastructure...
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