Onsite DoD ISSO RMF & Cyber Security Lead

Leidos LLC; Lorton (VA); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos in Reston, Virginia, seeks an Information System Security Officer (ISSO) to support a fast-paced Air Force Life Cycle Management Center program. This on-site role ensures DoD information systems meet RMF, NIST, JSIG standards, and involves risk assessments, continuous monitoring, and policy development.

Collaborate with cross-functional teams and maintain security documentation. The position requires US citizenship with active TS clearance and SCI eligibility, a relevant degree with

Qualifications

• US Citizen with Top Secret clearance and SCI eligibility.
• Bachelor’s degree with 4+ years experience or Master’s with 2+ years.
• In-depth knowledge of DoD cybersecurity policies, RMF, NIST, JSIG, FISMA.
• DoD8140 Intermediate certification (e.g., Cloud+, Security+).
• Experience with risk management, vulnerability assessments, and audits.
• Strong communication and cross‑functional collaboration skills.

Responsibilities

• Collaborate daily with the ISSM to provide cybersecurity guidance.
• Develop and maintain security policies, procedures, and documentation per DoD standards.
• Oversee security posture and RMF accreditation for DoD ISs.
• Perform risk assessments, vulnerability assessments, and security audits.
• Manage continuous monitoring of security controls and incident response.
• Coordinate with engineering, IT, and operations to enforce security controls.
• Maintain SSPs, risk assessments, and POA&Ms.
• Stay current with emerging threats and security trends.

Skills

DoD cybersecurity policies

RMF / NIST 800-53

Cloud security

Risk assessment

Vulnerability assessment

Security monitoring

Incident response

Cross-functional collaboration

Education

Bachelor’s degree with 4+ years experience

Master’s degree with 2+ years experience

Tools

SIEM

Firewalls

Vulnerability scanners

Cloud tooling

Job description

Leidos in Reston, Virginia, seeks an Information System Security Officer (ISSO) to support a fast-paced Air Force Life Cycle Management Center program. This on-site role ensures DoD information systems meet RMF, NIST, JSIG standards, and involves risk assessments, continuous monitoring, and policy development.

Collaborate with cross-functional teams and maintain security documentation. The position requires US citizenship with active TS clearance and SCI eligibility, a relevant degree with