Information Systems Security Engineer

Leidos is seeking an Information System Security Engineer to support mission-critical government and commercial systems. You will help design, implement, and maintain security controls; assess system risks and vulnerabilities; and prepare documentation for security authorization and compliance. The ideal candidate applies NIST guidance and risk management practices, collaborates with engineering and operations teams, and communicates security findings clearly. Join a mission-driven, customer-focused team committed to integrity, innovation, inclusion, and continuous learning. Leidos offers competitive pay, robust benefits, flexible work options, and professional development while supporting impactful work in national security, health, and engineering. Specific clearance, location, and experience requirements depend on the assigned program., * Design, implement, and maintain information system security controls.

• Assess system risks, vulnerabilities, and compliance gaps.
• Support security authorization and continuous monitoring activities.
• Develop and maintain security documentation, including system security plans.
• Coordinate with engineering and operations teams to remediate security findings.
• Apply NIST guidance and risk management practices to protect systems.
• Communicate security risks, assessment results, and recommendations to stakeholders.

• Information system security engineering
• NIST Risk Management Framework (RMF)
• NIST security controls
• System security plans (SSPs)
• Security control assessment and authorization
• Risk assessment and management
• Vulnerability assessment and remediation
• Security configuration management
• Incident response
• Security documentation and compliance