Principal Systems Security Engineer / Senior ISSM

Full-time Other-General

As a Principal Systems Security Engineer, you will act as a key leader in developing and executing our security strategy. You will oversee the security architecture, manage high‑stakes security incidents, and provide expert consultation across the organization.

Responsibilities

• The Principal Systems Security Engineer / Senior Information System Security Manager (ISSM) is a dual‑mode technical SME and program security lead responsible for the end‑to‑end cybersecurity posture, compliance governance, and system accreditation of information systems within a complex, multi‑classification defense program environment.
• This role combines active hands‑on‑keyboard technical security execution — vulnerability scanning, SIEM operations, STIG hardening, and system monitoring — with senior leadership accountability for ISSO team development, ATO lifecycle management, DCSA/DoW/IC compliance framework implementation, and direct representation of program secur...