Senior Information Assurance Security Engineer

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

Benefits offered by this job

Competitive compensation

Health and Wellness programs

Income Protection

Paid Leave and Retirement

Job summary

Leidos is seeking an Information Assurance Security Engineer (IASE) / Information Systems Security Engineer (ISSE) in Suitland, MD. You will secure, administer, harden, and maintain critical systems while collaborating with network, systems, and architecture teams to strengthen the security posture.

The role supports vulnerability remediation, security testing, and architecture reviews across enterprise infrastructure. Experience with DoD RMF, STIGs, and SCAP-based tools is highly valued.

Qualifications

• Bachelor's degree or higher in a relevant field with extensive experience.
• Experience with DoD RMF, ICD 503, and NIST RMF.
• Active TS/SCI clearance in DISS and required program access.

Responsibilities

• Serve as primary security engineering resource for enterprise infrastructure and vulnerabilities remediation.
• Research and evaluate cybersecurity tools and methodologies to strengthen security posture.
• Participate in architecture reviews and provide security recommendations for new capabilities.
• Troubleshoot security issues across storage, networking, OS, and enterprise infrastructure.
• Conduct vulnerability assessments, ethical hacking, and penetration testing.

Skills

Security engineering

TS/SCI clearance

RMF/NIST

SCAP tooling

Unix/Linux hardening

Security testing

Host/network scanners

IAM Level III baseline

Education

Bachelor's in Cybersecurity/EE/IT/IA

Master's with experience

Tools

Trellix/ESS

ACAS

RedSeal

Evaluate STIG

SteelCloud ConfigOS

STIG Manager

Job description

Leidos is seeking an Information Assurance Security Engineer (IASE) / Information Systems Security Engineer (ISSE) in Suitland, MD. You will secure, administer, harden, and maintain critical systems while collaborating with network, systems, and architecture teams to strengthen the security posture.

The role supports vulnerability remediation, security testing, and architecture reviews across enterprise infrastructure. Experience with DoD RMF, STIGs, and SCAP-based tools is highly valued.