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2555 systems security engineer jobs found

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Lockheed Martin
May 06, 2026
Cyber Systems Security Engineer
Lockheed Martin Eglin Air Force Base, FL
Description: What We're Doing At Lockheed Martin, we are pushing the boundaries of innovation to solve some of the world’s most complex challenges. In our Rotary and Mission Systems (RMS) division, we are focused on advancing security and resilience for critical defense systems, with a particular emphasis on F-35 Training & Logistics. Our team is dedicated to applying cutting-edge cybersecurity solutions that safeguard the integrity of systems throughout their lifecycle. We are passionate about ensuring that these systems remain resilient to evolving cyber threats, supporting both the F-35 and other essential training and logistics operations. The Work As a Cyber Systems Security Engineer, you will play a vital role in securing the backbone of mission-critical systems. Your responsibilities will include: Designing and developing cybersecurity solutions that span the entire system lifecycle, from initial planning to final validation. Conducting risk assessments,...
Lockheed Martin
Apr 23, 2026
Cyber Systems Security Engineer - Level 3
Lockheed Martin Marietta, GA
Description: Our customers include both the U.S. Military and international governments and organizations. Our global reach and technical depth offer an endless amount of opportunities for up-and-coming engineers seeking a place to make their mark – or for seasoned engineers seeking their next career challenge. Join us and see where your Lockheed Martin Aeronautics journey will take you! The Cyber Systems Security Engineer is responsible for the configuration and administration of network information systems procedures for classified and unclassified IT network systems in accordance with the customer specific requirements for deliverable and non-deliverable labs. This position is in support of the F-22, F-16, and F-35 development laboratory programs. The successful candidate will be required to: Interpret requirements to determine technical requirements and prepare to facilitate proper system configuration of network equipment. Provide engineering support for lab networks to...
Lockheed Martin
Apr 16, 2026
Cyber Systems Security Engineer Staff
Lockheed Martin King of Prussia, PA
Description: Cyber Systems Security Engineer (CSSE) – TTWCS Program What We're Doing At Lockheed Martin Rotary and Mission Systems, we are shaping the future of defense and security through innovation, integrity, and visionary thinking. Our teams apply the highest standards of business ethics and technical expertise to design solutions that safeguard our nation and allies. Every day, we push boundaries to ensure mission success—and we invite you to be part of this critical work. The Work As a Cyber Systems Security Engineer (CSSE) supporting the TTWCS program, you will: Perform periodic manual and automated STIG evaluations, tracking deltas across versions and platforms. Conduct cyber risk assessment activities, including threat modeling, vulnerability analysis, and evaluation of mitigation strategies. Develop, analyze, and validate security design constraints within the cyber domain. Collaborate with cybersecurity engineers, system architects, and developers to ensure...
Lockheed Martin
Apr 16, 2026
Cyber Systems Security Engineer Senior
Lockheed Martin King of Prussia, PA
Description: Cyber Systems Security Engineer (CSSE) – TTWCS Program What We're Doing At Lockheed Martin Rotary and Mission Systems, we are shaping the future of defense and security through innovation, integrity, and visionary thinking. Our teams apply the highest standards of business ethics and technical expertise to design solutions that safeguard our nation and allies. Every day, we push boundaries to ensure mission success—and we invite you to be part of this critical work. The Work As a Cyber Systems Security Engineer (CSSE) supporting the TTWCS program, you will: Support the TTWCS modernization effort with architecting new solutions. Conduct cyber risk assessment activities, including threat modeling, vulnerability analysis, and evaluation of mitigation strategies. Develop, analyze, and validate security design constraints within the cyber domain. Collaborate with cybersecurity engineers, system architects, and developers to ensure robust, secure system...
General Dynamics Mission Systems, Inc
Apr 08, 2026
Systems Security Engineer
General Dynamics Mission Systems, Inc Taunton, MA
Basic Qualifications RRequires 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 eligibilityrequirements 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...
LMI
Apr 06, 2026
Information Systems Security Engineer (ISSE) - Navy
LMI Mechanicsburg, PA
Overview Location: Mechanicsburg, PA preferred. Tysons, VA, allowed. Partial teleworking allowed.   Overview:   The  Cyber & Sensor Integration Specialist  will promote an integrated, team-oriented culture while delivering strong individual contribution while advocating through action, robust teaming,  coordination  and collaboration .   In this dynamic role, you will  leverage  your technical and cybersecurity subject matter  expertise  to provide strategic guidance and support to LMI clients throughout sales and engagement processes. This  Senior Consultant  level role will be expected to contribute critical thinking, spanning client support, securing planned architecture, troubleshooting, and working with customers to developing use cases and applications of LMI sensor technology. Your  contribution to  proposed cybersecurity responses will help drive implementation roadmaps and ensure alignment with customer security...
Lockheed Martin
Apr 02, 2026
Cyber Systems Security Engineer Staff
Lockheed Martin Fort Worth, TX
Description: You will be the Cyber Systems Security Engineer Staff for the Integrated Fighter Group (IFG) – F‑22 CNI Crypto Team which is responsible for leading the development, integration, and sustainment of cryptographic hardware across the F‑22 platform. What You Will Be Doing As the Cyber Systems Security Engineer Staff you will be responsible for driving the end‑to‑end engineering of the F‑22 CNI Crypto portfolio. You will work closely with CNI, Racks, DHM, CM, DM, NSA, and F‑22 SPO partners to ensure secure, certified solutions that meet mission requirements. Your responsibilities will include: Lead engineering development and integration of the full F‑22 CNI Crypto hardware suite. Provide technical training and SME oversight for existing and planned cryptographic systems. Represent the F‑22 CNI team with Lockheed Martin management, NSA, and customer counterparts. Approve technical inputs for proposals, basis‑of‑estimate (BoE) documents, and...
SAIC
Mar 18, 2026
Systems Security Engineer
SAIC MD
Description SAIC is seeking a highly motivated Systems Security Engineer. The successful candidate will provide support to the Cybersecurity Integrity Center in the Department of State Bureau of Diplomatic Technology (DT). Duties are in the Washington, D.C. metropolitan area (30% in downtown D.C; 70% in Beltsville, MD). Supports cybersecurity monitoring, threat analysis, incident response, and infrastructure remediation within and across all the State Department's information technology (IT) infrastructure. Coordinates and collaborates with other State Department bureaus as well as other organizations within the Federal Government, and commercial partners. Description of Duties: The Systems Security Engineer collaborates with Department and external cyber stakeholders on cybersecurity technologies with experience in Microsoft products and security systems, network topology and protocols, enterprise server & desktop operating systems, and applications, in support of over...
Lockheed Martin
Mar 14, 2026
Embedded Systems Security Engineer, Senior - Level 3
Lockheed Martin Orlando, FL
Description: You will be a Cyber Systems Security EMBEDDED Engineer 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 Systems Security Engineer you will be responsible for providing embedded System Security Engineering design and implementation in all aspects of System Security Engineering (SSE) process in development of Department of Defense (DoD) Weapon Systems. Your responsibilities will include: • Assessing and mitigating System Security threats/risks throughout the embedded Weapon System development life cycle. • Validating System Security Engineering requirements decomposition, allocation and analysis for embedded Weapon Systems. • Implementing System Security Engineering...
General Dynamics Mission Systems, Inc
Feb 23, 2026
Systems Security Engineer
General Dynamics Mission Systems, Inc Dedham, 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 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...
Lockheed Martin
Feb 05, 2026
Cyber Systems Security Engineer (Embedded)
Lockheed Martin Grand Prairie, TX
Description: You will be a Cyber Systems Security Engineer 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 Systems Security Engineer you will be responsible for providing embedded System Security Engineering design and implementation in all aspects of System Security Engineering (SSE) process in development of Department of Defense (DoD) Weapon Systems. Your responsibilities will include: • Assessing and mitigating System Security threats/risks throughout the embedded Weapon System development life cycle • Validating System Security Engineering requirements decomposition, allocation and analysis for embedded Weapon Systems • Implementing System Security Engineering solutions...
Lockheed Martin
May 01, 2026
Cyber Systems Security Engineer-Level 2
Lockheed Martin Fort Worth, TX
Description: This is an Individual Contributor position for the Integrated Fighter Group (IFG) Cyber Resilience Engineering (CRE) Team Engineer. The Integrated Fighter Group is comprised of F-22, F-16, T-50 platforms. This position resides in the Combat Systems organization. This position reports to the IFG CRE Manager. The Cybersecurity Engineer will support/coordinate the execution of a range of cyber risk analysis and security assessment methods; be able to comprehend and support customer composition of Security Classification Guide (SCG) guidance, implement patches and Security Technical Implementation Guides (STIGs) to address cyber vulnerabilities, feature changes, or obsolescence; develop documentation for specific installations and configurations necessary to obtain Authorizations to Operation (ATOs) in support of program schedules; and contribute to and implement Plan of Action and Milestones (POAMs) to mitigate open cyber risks. The ideal candidate will communicate...
Lockheed Martin
May 01, 2026
Cyber Systems Security Engineer-Level 4
Lockheed Martin Fort Worth, TX
Description: This is an Individual Contributor position for the Integrated Fighter Group (IFG) Cyber Resilience Engineering (CRE) Team Engineer. The Integrated Fighter Group is comprised of F-22, F-16, T-50 platforms. This position resides in the Combat Systems organization. This position reports to the IFG CRE Manager. The Cybersecurity Engineer will support/coordinate the execution of a range of cyber risk analysis and security assessment methods; be able to comprehend and support customer composition of Security Classification Guide (SCG) guidance, implement patches and Security Technical Implementation Guides (STIGs) to address cyber vulnerabilities, feature changes, or obsolescence; develop documentation for specific installations and configurations necessary to obtain Authorizations to Operation (ATOs) in support of program schedules; and contribute to and implement Plan of Action and Milestones (POAMs) to mitigate open cyber risks. The ideal candidate will communicate...
Lockheed Martin
Apr 22, 2026
Cyber Systems Security Engineer
Lockheed Martin Marietta, GA
Description: At Lockheed Martin Aeronautics, we're taking innovation to the next level. From designing the most advanced air vehicle to designing aircraft that defies gravity, our engineers live on the cutting edge of technology. Never have the opportunities for a technical career been so limitless. The Cyber System Security Engineer candidate is responsible for ensuring that cyber security requirements are properly defined, decomposed, allocated, implemented, and assessed to produce a cyber-resilient security design solution for the target platform (Air System or Weapon System). This includes participating in working groups, design reviews, and formal artifact reviews alongside other Subject Matter Experts (SMEs) within the overall platform; and providing security expertise to ensure that cyber security is considered early in the product development lifecycle. Applicant is expected to Lead a range of cyber risk analysis and security assessment methods; implement patches and...
Lockheed Martin
Apr 03, 2026
Cyber Systems Security Engineer - Level 4
Lockheed Martin Marietta, GA
Description: Lockheed Martin Aeronautics. Be More Than You Can Imagine. At Lockheed Martin Aeronautics, we're taking innovation to the next level. From designing the most advanced air vehicle to designing aircraft that defies gravity, our engineers live on the cutting edge of technology. Never have the opportunities for a technical career been so limitless. The Cyber System Security Engineer candidate is responsible for ensuring that cyber security requirements are properly defined, decomposed, allocated, implemented, and assessed to produce a cyber-resilient security design solution for the target platform (Air System or Weapon System). This includes participating in working groups, design reviews, and formal artifact reviews alongside other Subject Matter Experts (SMEs) within the overall platform; and providing security expertise to ensure that cyber security is considered early in the product development lifecycle. Applicant is expected to conduct a range of cyber risk...
Lockheed Martin
Apr 01, 2026
Cyber Systems Security Engineer - Level 3
Lockheed Martin Marietta, GA
Description: Lockheed Martin's aircraft leadership is earned through relentless research and development of high-performance combat, air mobility and reconnaissance and surveillance aircraft. We also provide world-class training, focused logistics support, and advanced targeting and navigation technologies to enable the right people with the right skills to be in the right place at the right time with the right information and the right munitions to accomplish their missions. Seeking well-rounded experienced engineer with strong background in real-time and heterogeneous laboratory environments to become a Cyber Infrastructure Engineer (CIE) supporting the F-35 Mission System Integration Laboratories (MSIL) and IFG. The successful candidate will be responsible for providing F-35 and F-22 lab computer infrastructure support, asset management, cyber resiliency, technical design, system development, system test and capability enhancements. Candidate will participate in operations...
Lockheed Martin
May 07, 2026
Cybersecurity Systems Security Engineer
Lockheed Martin Colorado Springs, CO
Description: In this role, you will: • Evaluate systems and designs to determine cybersecurity characteristics • Identify and conduct cybersecurity testing and risk analysis at the system and component level • Communicate assessment results The successful candidate will have experience and/or knowledge of: • General understanding of system and component functionality • Familiar with cybersecurity requirements • Experience in testing environment • Must be a US Citizen; this position will require a government security clearance. Basic Qualifications: • Knowledge of DoD/Space Force cybersecurity regulations • Use of Security Technical Implementation Guide (STIG) tools • Strong analysis skills and attention to detail • Possess or have the ability to obtain IAT Level 2 Certification (Security+, CISSP, etc.) • Willing to travel occasionally (<5%) • Knowledge of ports, protocols, and services • Familiarity with Risk Management Frameworks Desired Skills: Basic knowledge of: • Use...
U. S. National Security Agency
Apr 29, 2026
Information Systems Security Engineer - Mid to Expert Level (Maryland)
U. S. National Security Agency Fort Meade, MD
Responsibilities: Information System Security Professionals at NSA play a vital role in in the architecting, designing, operating, defending, and maintaining secure state of the art Information Technology (IT) systems executing NSA's SIGINT and Cybersecurity missions. NSA is advancing technology to deliver mission outcomes. As such, Cybersecurity Professionals have the opportunity to work across a broad set of technologies including commercial cloud fabrics, artificial intelligence, high performance computing, and advanced cryptographic systems. These personnel are involved in the full life cycle of systems: designing, maintaining and monitoring the systems so they can be protected from the most sophisticated nation-state adversaries. Some examples of tasks include: - Design system/network architectures to enforce levels of confidentiality, integrity and availability - Ability to implement systems engineering principles/methodology - Define and manage remediation plans across...
Lockheed Martin
Mar 24, 2026
Cyber Systems Security Engineer - Level 4
Lockheed Martin Fort Worth, TX
Description: At Lockheed Martin Aeronautics, we're taking innovation to the next level. From designing the most advanced air vehicle to designing aircraft that defies gravity, our engineers live on the cutting edge of technology. Never have the opportunities for a technical career been so limitless. The System Security Engineer candidate is responsible for ensuring that cyber security requirements are properly defined, decomposed, allocated, implemented, and assessed to produce a cyber-resilient security design solution for the target platform. This includes participating in working groups, design reviews, and formal artifact reviews alongside other Subject Matter Experts (SMEs) within the overall platform; and providing security expertise to ensure that cyber security is considered early in the product development lifecycle. Applicant is expected to conduct a range of cyber risk analysis and security assessment methods; implement patches and Security Technical Implementation...
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