Principal Cybersecurity Systems Engineer

Leidos is seeking a Principal Cybersecurity Systems Engineer to support an Information Assurance Program near Fort Meade, Maryland. The role focuses on high assurance cybersecurity evaluation and system engineering documentation that supports DoD Certification and Accreditation activities for mission-critical hardware and software systems.

Responsibilities

• Contribute to the development and evaluation of system engineering documentation, including System Engineering Plans, Initial Capabilities Documents, Requirements Specifications, and security requirements and security testing documents.
• Provide technical support across engineering, interfacing, integration, and testing for complex hardware and software system components, including requirements elicitation, requirements analysis, functional allocation, systems requirements reviews, and technical or non-technical assessments.
• Support planning and test analysis aligned to the DoD Certification/Accreditation process and other Government C&A processes.
• Perform cybersecurity high assurance evaluation activities by reviewing security evaluation documents and other high assurance artifacts for devices under certification and assessment to confirm alignment with security requirements.
• Attend and participate in security-related meetings and reviews to translate vulnerability knowledge into guidance that helps prevent and/or manage risk.
• Document security deficiencies identified during the evaluation of artifacts and documents.
• Recommend requirement clarification and process or template improvements to mitigate security concerns.

Requirements

• 20+ years of System Engineering experience.
• Bachelor's Degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related discipline from an accredited college or university.
• Five (5) years of additional System Engineering experience may substitute for a Bachelor's Degree.
• Information Assurance and/or cryptographic experience.
• Excellent written and verbal communication skills.
• Ability to work in a team environment and lead small teams.
• Active TS/SCI with Poly Clearance required.

Additional Experience (You Might Also Have)

• Experience in Space, Weapon, Ground, and/or Terminal system development and/or evaluation.
• Experience in the DoD Certification/Accreditation Process and other Government C&A processes.
• Experience in Space System Engineering.

Compensation and Location

Location: Linthicum Heights, MD (onsite).
Pay Range: USD 154,050 - 278,475 per year.

Benefits

• Competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

Posting Date

Original posting date: October 19, 2026.