Principal Cybersecurity Systems Engineer

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

Role Overview

In this position, you will contribute to the development and evaluation of engineering and security documentation, support engineering activities across complex hardware and software components, and help ensure systems are assessed against applicable security requirements within the DoD C&A framework.

Key Responsibilities

• Participate in the development and evaluation of system engineering documentation, including System Engineering Plans, Initial Capabilities Documents, Requirements Specifications, security requirements, and security testing documents.
• Provide technical support for engineering, interfacing, integration, and testing of complex hardware and software components, including requirements elicitation, analysis, and functional allocation, conducting systems requirements reviews, and performing technical and non-technical assessments.
• Support planning and test analysis activities associated with the DoD Certification and Accreditation Process, as well as other Government C&A processes.
• Perform cybersecurity high assurance evaluation activities, including reviews of security evaluation documents and other high assurance artifacts for devices undergoing 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.
• Clearly document security deficiencies identified during the evaluation of artifacts and documents.
• Recommend requirement clarifications and process or template improvements to mitigate security concerns.

Required Qualifications

• 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 Systems Engineering experience may be substituted 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.

Preferred / Additional Experience (Optional)

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

Location and Salary Range

Location: Linthicum Heights, MD (onsite)

Salary 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