Cyber Systems Security Engineering Sr - E3

Lockheed Martin; King of Prussia (PA); Hybrid; USD 110,000 - 205,000; Full time

Benefits offered by this job

Medical

Dental

Vision

Flexible work arrangements (e.g., 4x10

401(k) match

Paid time off

Holidays

Parental Leave

EAP

Flexible Spending Accounts

Education Assistance

Life Insurance

Short-Term Disability

Long-Term Disability

Job summary

Lockheed Martin is seeking a Cyber Systems Security Engineer (CSSE) for the TTWCS program in King of Prussia, PA. The role focuses on risk assessment, STIG evaluations, and secure design validation within a collaborative team of cybersecurity professionals.

The position requires DoD Secret clearance eligibility, Linux/Windows security experience, and proficiency with automation tools like Ansible; hybrid onsite work is required three days per week with up to 10% travel.

Qualifications

• 7+ years in cybersecurity, systems engineering, information assurance or related field.
• Experience securing Linux and/or Windows operating systems in enterprise or mission environments.
• Experience with Ansible and deployment automation.
• Experience with vulnerability scanning and remediation tools.
• Experience with scripting languages and automation tools.
• Ability to obtain and maintain a DoD Secret clearance.

Responsibilities

• 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 robust, secure system solutions.
• Conduct cybersecurity test and evaluation of hardware and software to verify 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.

Skills

Linux/Windows Security

Automation with Ansible

Vulnerability management

Scripting & automation

DoD Clearance

Education

BS in Cybersecurity or related field

Tools

Kubernetes

OpenShift

ArcSight SIEM

Job description

Standard Job 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 AI 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 clearance at the Secret level.

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.

Basic Qualifications

• Minimum 7+ years of experience in cybersecurity, systems engineering, information assurance or relevant experience
• Experience securing Linux and/or Windows operating systems in enterprise or mission environments.
• Experience with Automation tools specifically Ansible and familiarity with deployment automation
• Experience with vulnerability scanning and remediation tools.
• Experience with scripting languages and automation tools
• Ability to obtain and maintain a DoD Secret clearance (or higher, as required).

Desired Skills

• Possess an approved DoD 8570 baseline certification for IAT Level II (CISSP, CAP, etc.)
• Experience supporting DoD weapon systems, aviation platforms, or classified mission systems.
• Experience with Containerization technologies to include Kubernetes and Openshift
• Experience with Virtualization platforms/hypervisors
• Experience implementing container security and Kubernetes hardening.
• Familiarity with SIEM Tools deployment and administration specifically ArcSight
• Experience with Zero Trust architecture and cyber resiliency engineering.

Pay Information

Full-Time Salary Range: $110300.00 - $204900.00

At Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow—both professionally and personally.

The salary range for this position is as listed on the requisition. Please note that the salary information listed is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market(work location) and business considerations when extending an offer.

Benefits offered

• Medical
• Dental
• Vision
• Flexible work arrangements and schedules (e.g., 4x10)
• 401(k) match
• Paid time off
• Holidays
• Parental Leave
• EAP
• Flexible Spending Accounts
• Education Assistance
• Life Insurance
• Short-Term Disability
• Long-Term Disability

• Annual short-term and/or long-term incentive compensation programs may be offered depending on the position. Payments under these annual programs are not guaranteed and can vary from year to year and are tied to a range of performance metrics.
• For (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year.