C-UAS Cyber Security Architect — RMF/ATO Lead

Leidos; Huntsville (AL); Hybrid; USD 108,000 - 195,000; Full time

Job summary

Leidos is seeking a Cyber Security Architect to lead end-to-end security architecture for the Army’s C‑UAS Network Communication System (NCS). You will define secure designs spanning encryption, authentication, access control, and secure cloud/remote access, while guiding engineering teams and coordinating with government stakeholders.

The role focuses on RMF/ATO strategy, threat modeling, and artifact development, mentoring engineers and ensuring secure-by-design practices across lifecycle

Qualifications

• Bachelor's in Cybersecurity/CS/Engineering and 10+ years cybersecurity or security architecture experience.
• Active Secret clearance with the ability to obtain Top Secret.
• DoD 8570/8140 IAT/IASAE II/III certification (CISSP, CASP+, etc.).
• Proven experience architecting security for complex networked/tactical systems.
• Expertise in encryption, identity/authentication, access control, and secure cloud/remote-access design.
• Strong RMF/ATO experience and hands-on development of security architecture artifacts.

Responsibilities

• Define and lead the NCS security architecture, trust boundaries, and system-wide controls.
• Architect encryption, identity/MFA, and RBAC for tactical and DIL environments.
• Design secure cloud integration and zero-trust remote access for tactical data pipelines.
• Lead RMF/ATO strategy, author key artifacts, and coordinate with ISSM/ISSO/AO stakeholders.
• Conduct architecture-level threat modeling and risk assessments; define design-level mitigations.
• Provide security oversight to Agile engineering teams; review sprint deliverables for compliance.
• Represent security architecture during government assessments and TIMs; maintain architecture documentation.
• Mentor cybersecurity engineers and enforce secure-by-design principles.

Skills

Active Secret clearance

Threat modeling

RMF/ATO experience

Security architecture leadership

Education

Bachelor's in Cybersecurity/CS/Engineering

Tools

CISSP

CASP+

eMASS

Job description

Leidos is seeking a Cyber Security Architect to lead end-to-end security architecture for the Army’s C‑UAS Network Communication System (NCS). You will define secure designs spanning encryption, authentication, access control, and secure cloud/remote access, while guiding engineering teams and coordinating with government stakeholders.

The role focuses on RMF/ATO strategy, threat modeling, and artifact development, mentoring engineers and ensuring secure-by-design practices across lifecycle