ISSO: RMF & Security Ops Lead

Leidos; Maryland; On-site; USD 108,000 - 195,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with 6% company match

Flexible Schedules

Education and Training Support

Job summary

Leidos is seeking an Information Systems Security Officer (ISSO) to drive security operations and risk management for classified environments. You will oversee configurations, conduct assessments, and contribute to RMF authorization to operate across DoD-legacy and modern systems.

Ideal candidates hold DoD 8140 IAM/IAT certifications, possess TS/SCI with Polygraph eligibility, and bring extensive IA expertise.

Qualifications

• Bachelor’s Degree (Computer Science, Cybersecurity, IA, or related) + 8+ years of relevant experience.
• Master’s Degree (Computer Science, Cybersecurity, IA, or related) + 6+ years of experience.
• High School Diploma / Equivalent + 12+ years of direct experience (case-by-case).
• DoD 8140 Compliant at IAM Level I/II or IAT Level III (e.g., CISSP, CASP or SecurityX, Security+) by time clearance is awarded

Responsibilities

• Oversee daily security configurations for classified processing environments.
• Conduct rigorous vulnerability scans and comprehensive risk assessments.
• Evaluate new security solutions to strengthen the overall system architecture.
• Guide systems through the full RMF Authorization to Operate (ATO) lifecycle.
• Author System Security Plans (SSPs) and Risk Assessment Reports.
• Maintain precise Security Control Traceability Matrices (SCTMs) and A&A packages.
• Administer strict Configuration Management (CM) for software, hardware, and firmware.
• Audit security controls to confirm baseline integrity across enclaves.
• Analyze the security impact of proposed technical system changes.
• Provide technical guidance on complex security policies to stakeholder groups.
• Proactively hunt for weaknesses and deploy strategic solutions to raise resilience.
• Partner with engineering teams to embed security best practices early.

Skills

Interpersonal communication

Organizational focus

Critical thinking

Education

Bachelor's degree in CS/Cybersecurity/IA

Master’s degree in CS/Cybersecurity/IA

High School Diploma / Equivalent + 12+ years experience

Tools

Nessus

Splunk

ServiceNow

XACTA

eMASS

Job description

Leidos is seeking an Information Systems Security Officer (ISSO) to drive security operations and risk management for classified environments. You will oversee configurations, conduct assessments, and contribute to RMF authorization to operate across DoD-legacy and modern systems.

Ideal candidates hold DoD 8140 IAM/IAT certifications, possess TS/SCI with Polygraph eligibility, and bring extensive IA expertise.