Information Assurance Security Engineer (TS/SCI)

Leidos; Suitland (MD); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos in Suitland, MD is hiring an Information Assurance Security Engineer (IASE) / ISSE to secure and maintain enterprise infrastructure. You will work across network, systems, cybersecurity, and architecture teams to strengthen security posture through hands-on engineering and vulnerability remediation.

This role supports continuous security testing, STIG/RMG compliance, and secure admin configurations while aligning with DoD IC requirements. Open to candidates with varying experience levels.

Qualifications

• Bachelor's degree in cybersecurity, IT, or related field with 8+ or 12+ years experience.
• Active TS/SCI clearance in DISS with required program access.
• DoD RMF, ICD 503, or NIST RMF experience.

Responsibilities

• Serve as primary security engineering resource for enterprise infrastructure.
• Research and evaluate cybersecurity tools and methodologies to strengthen security.
• Participate in architecture reviews and provide security recommendations for new capabilities.
• Troubleshoot complex security issues across storage, networking, operating systems, authentication, and enterprise infrastructure.
• Conduct vulnerability assessments, ethical hacking, and penetration testing to identify risks.
• Review and harden storage protocols and services per requirements.
• Apply STIGs, SRGs, vendor guidance, and industry best practices.
• Configure secure admin access using RBAC, TLS, and centralized authentication.
• Develop and deliver training on cybersecurity tools, technologies, and processes.

Skills

Security engineering

RMF & NIST

STIGs

Vulnerability remediation

Architecture reviews

DoD/IC processes

Programming/scripting (Java/C/C++)

Education

Bachelor's degree in Cybersecurity or related field

Master's degree

Tools

Trellix/ESS

ACAS

RedSeal

STIG Manager

SteelCloud ConfigOS

SCAP tooling

Job description

Leidos in Suitland, MD is hiring an Information Assurance Security Engineer (IASE) / ISSE to secure and maintain enterprise infrastructure. You will work across network, systems, cybersecurity, and architecture teams to strengthen security posture through hands-on engineering and vulnerability remediation.

This role supports continuous security testing, STIG/RMG compliance, and secure admin configurations while aligning with DoD IC requirements. Open to candidates with varying experience levels.