ISSO: DoD Cybersecurity for Classified Systems

Leidos; Omaha (NE); On-site; USD 110,000 - 140,000; Full time

Job summary

Leidos in Omaha, NE is seeking an Information System Security Officer (ISSO) to oversee security for classified information systems. You will support operation, maintenance, and authorization across the system lifecycle, applying RMF requirements and coordinating with security teams.

You will perform day-to-day ISSE activities, maintain documentation, assess compliance, and drive remediation of identified weaknesses.

Qualifications

• Active DoD Top Secret clearance with SCI eligibility.
• Experience applying DoD RMF to information systems.
• Ability to coordinate remediation and maintain security documents.
• Experience with continuous monitoring and vulnerability management.

Responsibilities

• Serve as the Information System Security Officer for assigned classified information systems.
• Support the implementation, operation, maintenance, and continuous monitoring of cybersecurity controls.
• Apply the DoD RMF to assigned systems, including security control implementation, assessment preparation, authorization maintenance, and ongoing monitoring.
• Assist with maintaining system authorization packages and supporting documentation.
• Develop, review, and update system security documentation such as System Security Plans, security control implementation statements, plans of action and milestones, continuous monitoring records, risk assessments, procedures, inventories, diagrams, and supporting evidence.
• Evaluate security controls for proper implementation and operating effectiveness.
• Coordinate remediation of security deficiencies and track through closure.
• Perform vulnerability-management activities, including scans and remediation tracking, and validating remediation.

Skills

RMF

Vulnerability management

Documentation

DoD cybersecurity requirements

System security

Job description

Leidos in Omaha, NE is seeking an Information System Security Officer (ISSO) to oversee security for classified information systems. You will support operation, maintenance, and authorization across the system lifecycle, applying RMF requirements and coordinating with security teams.

You will perform day-to-day ISSE activities, maintain documentation, assess compliance, and drive remediation of identified weaknesses.