Cyber Systems Security Engineer Senior

Cyber Systems Security Engineer Senior | Lockheed Martin

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 solutions.
• Conduct cybersecurity test and evaluation of hardware and software to verify compliance with requirements.
• Apply and ensure consistent use of cybersecurity processes, methods, techniques, and tools.
• Prototype and implement software solutions supporting assessment and authorization activities required by customers.

Please note: This position requires the ability to obtain and maintain a DoD government Secret level clearance to start. This position is based out of King of Prussia, PA and is hybrid but required to work onsite 3 days a week. This position requires the ability to travel up to 10%.

Who We Are We are Lockheed Martin, a global security and aerospace leader. Our Rotary and Mission Systems (RMS) business area delivers solutions that connect people, protect freedom, and advance the state of technology in areas such as naval systems, radar, cyber, and missile defense.

Who You Are You are a mission-driven engineer with a strong background in cybersecurity and systems engineering. You thrive in collaborative environments and are passionate about applying your skills to safeguard systems against evolving threats. Your ability to assess risks, develop secure designs, and validate solutions makes you a trusted partner in ensuring mission success.

Why Join Us At Lockheed Martin, your skills, training, and education are valued—and your future is limitless. You'll join a team that empowers innovation, supports professional growth, and makes a tangible impact on global security. From day one, you'll be part of something bigger: protecting what matters most.