Security Architect - RMF, Cloud & AI Platform

Leidos; Reston (VA); Hybrid; USD 154,000 - 278,000; Full time

Job summary

Leidos seeks a Security Engineer Solution Architect to lead enterprise security for a Defense Intelligence Enterprise project. You will guide RMF/ATO processes, advise on governance and automation, and interact with client CIOs while ensuring strong security across cloud and on-site environments.

The role requires an active TS/SCI clearance, DoD RMF experience, and extensive collaboration with PMs and engineers to deliver secure, compliant solutions.

Qualifications

• Active TS/SCI clearance with ability to obtain/maintain a Polygraph.
• DoD 8570.01-M IASAE Level II certs (CISSP family or CASP+).
• Experience supporting RMF-based ATO processes for DoD/IC.
• Familiarity with NIST SPs and CNSSI 1253 guidance.
• Experience leading security architecture in cloud environments.
• Experience managing security teams and delivering secure software.

Responsibilities

• Lead architecture and implement streamlined security, governance, and accreditation models.
• Provide expert security guidance across Linux/Windows, networks, and cloud infra.
• Interact with client CIOs and POCs; develop security policies and procedures.
• Drive RMF/ATO activities, incident response plans, and POA&Ms.
• Foster collaboration among PMs, engineers, and security teams for quality outcomes.

Skills

TS/SCI clearance

Polygraph

CISSP/CISSP-ISSAP/CISSP-ISSEP/CSSLP/Cy

NIST publications familiarity

CNSSI 1253 knowledge

RMF/ATO experience

POA&Ms & risk management plans

SSE management

Lead Cyber Security Engineers/ISSOs

Tenable Security Center

Linux/Windows security

Firewalls/PKI/VPCs

Strong communication & collaboration

Education

BS degree + 15+ years experience

Tools

Jira

Confluence

RMF tooling

Job description

Leidos seeks a Security Engineer Solution Architect to lead enterprise security for a Defense Intelligence Enterprise project. You will guide RMF/ATO processes, advise on governance and automation, and interact with client CIOs while ensuring strong security across cloud and on-site environments.

The role requires an active TS/SCI clearance, DoD RMF experience, and extensive collaboration with PMs and engineers to deliver secure, compliant solutions.