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Information System Security Engineer

Guidehouse | WASHINGTON, United States | Posted June 02, 2026

Position Overview

**Job Family** **:**

Cyber Consulting

**Travel Required** **:**

Up to 10%

**Clearance Required** **:**

Ability to Obtain Public Trust

**What You Will Do** **:**

+ **System Boundary Analysis:** Define and maintain system security boundaries across hybrid cloud and on-premises environments, including AWS & Azure CSPs, VMware infrastructure, and legacy datacenter assets.
+ **Authorization Package Development:** Author and maintain System Security Plans (SSPs), Security Assessment Reports (SARs), Plans of Action and Milestones (POA&Ms), and related NIST RMF artifacts for all OCIO-managed systems.
+ **Continuous Monitoring:** Implement and oversee continuous ATO processes aligned with NIST SP 800-137 and OSCAL-based automation, ensuring real-time visibility into system posture.
+ **Control Inheritance Mapping:** Map technical controls across shared service environments, identifying common controls, system-sp...

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