Principal Systems Engineer

Leidos has an opportunity for a Principal Systems Engineer in our National Security Sector's Cyber & Analytics Business Area. Our team leads in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.

About the role

This position supports a complex program for the Warfighter, implementing the latest technology. The Principal Systems Engineer will work closely with software developers, Subject Matter Experts, and analysts to perform requirements derivation and refinement. The role requires a proactive, self-starter with significant technical leadership experience and excellent communication skills.

Responsibilities

• Derive functional, system, and performance requirements
• Develop various systems engineering artifacts (CONOPs, architecture diagrams, etc.)
• Develop schedules for features; perform backlog grooming
• Write or review documentation
• Serve as team lead
• Create various status reports

Requirements

• Twenty (20) years' experience as a Systems Engineer in programs and contracts of similar scope, type, and complexity
• Bachelor's degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related discipline from an accredited college or university (five years of additional SE experience may be substituted for a bachelor's degree)
• Top Secret/SCI with Polygraph clearance

Preferred Qualifications

• Experience in planning and leading Systems Engineering efforts
• Participation in an Integrated Product Team to design new capabilities based on evaluation of development and operational considerations
• Support for planning and test analysis of the DoD Certification/Accreditation Process and other Government C&A processes
• Experience with Atlassian tools (Jira, Confluence)
• Agile experience
• Experience with MS Project and/or Visio

Benefits

• Paid Time Off
• 11 paid holidays
• 401K with a 6% company match and immediate vesting
• Flexible schedules
• Discounted Stock Purchase Plans
• Technical upskilling, education, and training support
• Parental paid leave

Pay

Pay Range: $154,050.00 - $278,475.00. The Leidos pay range for this job level is a general guideline and not a guarantee of compensation. Additional factors considered include responsibilities, education, experience, knowledge, skills, abilities, internal equity, and market data.

Original posting date: August 19, 2026. This requisition is expected to remain open for at least 3 days.