Information System Security Professionals ISSO ISSE

Job Overview

Leidos is seeking Information Security Professionals for programs in our Intelligence Sector, Cyber & Analytics Business Area (CABA). Our team works on Security Engineering, Computer Network Operations, Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.
Leidos offers competitive benefits including paid time off, 401(k) match, flexible schedules, technical upskilling, and more.

Job Summary: The ISSO safeguards information systems, collaborates with cross‑functional teams to develop security frameworks, manages policies, performs assessments, and supports authorization processes.

• Propose, coordinate, implement, and enforce information systems security policies, standards, and methodologies.
• Maintain the operational security posture for information systems to ensure policies, standards, and procedures are established and followed.
• Manage security aspects of information systems and perform daily security operations.
• Evaluate security solutions to ensure they meet requirements for processing classified information and perform vulnerability/risk assessments to support certification and accreditation.
• Provide configuration management for information system security software, hardware, and firmware, and manage changes to systems, assessing their security impact.
• Prepare and review security documentation, including System Security Plans (SSPs) and Assessment and Authorization packages.
• Manage and coordinate security authorization activities in accordance with Government regulations, Department of Defense and NIST Risk Management Framework and standards, and customer‑specific information security policies, processes, and procedures.

Job Summary: The ISSE designs, develops, and implements secure information systems, collaborating with architects and developers to integrate robust security measures throughout the system lifecycle.

• Perform and review technical security assessments to identify vulnerabilities and ensure compliance with information assurance standards and regulations.
• Validate and verify system security requirements, establish system security designs, and integrate system security capabilities for various environments.
• Build cybersecurity into systems deployed to operational environments, ensuring uniform application of security policies and enterprise solutions.
• Assess and mitigate system security threats and risks throughout the program life cycle, contributing to security planning, assessment, risk analysis, and risk management.
• Apply system security engineering expertise in areas such as system security design, life cycle, risk management, and security testing, using industry system security engineering methodologies.
• Enforce the design and implementation of trusted relations among external systems and architectures and manage changes to systems while assessing security impact.
• Support security authorization activities in accordance with Government regulations, Department of Defense and NIST Risk Management Framework standards, and customer-specific information security policies, processes, and procedures.

• Bachelor’s or Master’s Degree in a related field and 12+ years of related experience; candidates without a bachelor’s degree may be considered on a case‑by‑case basis with an additional 4 years of experience.
• Level 1 – Bachelor’s and 7–14 years of experience.
• Level 2 – Bachelor’s and 14–20 years of experience.
• Level 3 – Bachelor’s and 20+ years of experience.
• DoD 8570 Certification compliance related to level of position, including IAT II, IAM I‑III, IASAE I‑III, Security+, CISSP, CASP+, CE, ISSEP, or similar.

Must have an active TS/SCI clearance with Polygraph.

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Competitive compensation is complemented by health and wellness programs, income protection, paid leave, retirement plans, and educational and training support.

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.