Hands-On IA Security Engineer (TS/SCI)

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

Retirement

Job summary

Leidos is seeking a hands-on Information Assurance Security Engineer (IASE) / Information Systems Security Engineer (ISSE) to support a mission-driven enterprise in Suitland, MD. This role requires strong security engineering, vulnerability remediation, and collaboration across network, systems, cybersecurity, and architecture teams.

The posting covers multiple experience levels; compensation will be matched to experience. Active TS/SCI clearance and DoD/IC RMF familiarity are preferred.

Qualifications

• Bachelor’s degree in Cybersecurity, Electrical Engineering, Information Technology, Information Assurance, or related field with 8+ or 12+ years of experience; Master’s degree with 8+ or 10+ years of experience.
• Active TS/SCI security clearance.
• 8+ years of security engineering experience, including DoD RMF/IC/DoD processes.

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 strengthen enterprise security.
• Participate in architecture and engineering reviews and provide security recommendations for new capabilities 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 (NFS, SMB/CIFS, iSCSI) per requirements.
• Apply and validate DISA STIGs/SRGs and vendor security guidance.
• Configure and maintain secure admin access (SSH, TLS, RBAC, centralized authentication).
• Develop and deliver training on cybersecurity tools, technologies, and processes.

Skills

Security engineering

Java

C/C/C++

RMF/IC/DoD

Vulnerability remediation

Penetration testing

SCAP/STIG tools

Unix/Linux/Windows hardening

Project management

Training delivery

Education

Bachelor’s degree in Cybersecurity, EE, IT, or related field

Master’s degree (optional)

Tools

Trellix/ESS

ACAS

RedSeal

STIG Manager

Security tooling

Job description

Leidos is seeking a hands-on Information Assurance Security Engineer (IASE) / Information Systems Security Engineer (ISSE) to support a mission-driven enterprise in Suitland, MD. This role requires strong security engineering, vulnerability remediation, and collaboration across network, systems, cybersecurity, and architecture teams.

The posting covers multiple experience levels; compensation will be matched to experience. Active TS/SCI clearance and DoD/IC RMF familiarity are preferred.