OT Security Analyst: Inventory, Diagrams & Risk Register

Cyberjobs; Herndon (VA); On-site; USD 66,000 - 106,000; Full time

Job summary

Peraton is seeking an OT Security Analyst to support the Army National Guard in the greater DMV area. The role focuses on maintaining OT inventories, producing diagrams, mapping risks, and sustaining risk registers to enable RMF/ATO readiness.

You will collaborate with engineering, operations, and SOC teams to validate configurations, map vulnerabilities, and verify remediation across OT environments, contributing to continuous improvement in asset management and risk tracking.

Qualifications

• Experience in OT/ICS inventorying, network diagramming, risk management, or systems documentation.
• Proficiency creating and maintaining network/OT diagrams (Visio/NetBox/Diagrams tools) and authoritative asset registries.
• Familiarity with OT/ICS protocols, control system components, and typical OT network segmentation/zoning.
• Experience mapping vulnerabilities to OT assets, maintaining risk registers/POA&Ms, and supporting remediation verification.
• Strong attention to detail, documentation skills, and ability to coordinate with engineering and operations teams.

Responsibilities

• Maintain and update authoritative OT asset inventories, component registers, and configuration baselines.
• Produce and sustain network/interconnection diagrams (logical and physical) reflecting OT topology, zones, conduits, and data flows.
• Perform exposure and dependency analysis to map asset criticality, connectivity risks, and potential impact to operations.
• Update and maintain risk registers (RIO): record vulnerabilities, residual risk ratings, mitigation owners, POA&Ms, and status tracking.
• Validate system configurations with engineering and operations teams; identify undocumented connections or shadow assets and drive corrective actions.
• Support vulnerability scanning/assessment cycles by correlating findings to OT assets and verifying remediation evidence.
• Provide documentation and artifacts to support RMF/ATO evidence, CCRI readiness, and auditability for OT environments.
• Collaborate with SOC/CIRT, network, and system owners to inform detection, monitoring, and protective measures for OT assets.
• Contribute to continuous improvement of inventory, diagramming, and risk‑tracking processes and tools.

Skills

OT/ICS inventorying

Network diagramming

Risk management

Documentation

Asset registries

Education

Bachelor’s degree in CS/Cybersecurity/IT/related field

DoD/military training

CompTIA Security+

Tools

Visio

NetBox

Diagrams tools

CMDB/CM tools

Job description

Peraton is seeking an OT Security Analyst to support the Army National Guard in the greater DMV area. The role focuses on maintaining OT inventories, producing diagrams, mapping risks, and sustaining risk registers to enable RMF/ATO readiness.

You will collaborate with engineering, operations, and SOC teams to validate configurations, map vulnerabilities, and verify remediation across OT environments, contributing to continuous improvement in asset management and risk tracking.