TS/SCI Information Assurance Engineer (ISSE/IASE)

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

Benefits offered by this job

Health and Wellness programs

Income Protection

Paid Leave and Retirement

Job summary

Leidos is seeking an Information Assurance Security Engineer to secure and maintain critical systems in Suitland, MD. This hands-on role requires collaboration across network, systems, cybersecurity and architecture teams to strengthen the organization’s security posture.

The position emphasizes vulnerability remediation, security testing, and architecture support, with compensation aligned to background and expertise. Active TS/SCI clearance is required.

Qualifications

• Bachelor's degree or higher in a related field.
• Active TS/SCI clearance required.
• Experience with IC/DoD/DISA processes.
• DoD RMF, ICD 503, and NIST RMF experience.

Responsibilities

• Serve as a primary security engineering resource for enterprise infrastructure, providing hands on administration, configuration, security hardening, troubleshooting, and vulnerability remediation.
• Research and evaluate cybersecurity tools, technologies, and methodologies to identify opportunities to strengthen enterprise security.
• Participate in architecture and engineering reviews and provide security recommendations for new capabilities, technologies, and infrastructure changes.
• Troubleshoot complex security issues across storage, networking, operating systems, authentication, and enterprise infrastructure.
• Conduct vulnerability assessments, ethical hacking, and penetration testing to identify and address security risks.
• Review and harden storage protocols and services, including NFS, SMB/CIFS, iSCSI, and management interfaces, based on operational and security requirements.

Skills

Security engineering

RMF/DoD 8140

Vulnerability remediation

Penetration testing

Programming: Java/C/C++

SCAP tools

Security testing

Education

Bachelor’s degree in Cybersecurity or related field

Master’s degree in related field

Tools

Trellix/ESS

ACAS

RedSeal

Evaluate STIG

STIG Manager

STIGs

Job description

Leidos is seeking an Information Assurance Security Engineer to secure and maintain critical systems in Suitland, MD. This hands-on role requires collaboration across network, systems, cybersecurity and architecture teams to strengthen the organization’s security posture.

The position emphasizes vulnerability remediation, security testing, and architecture support, with compensation aligned to background and expertise. Active TS/SCI clearance is required.