Acclaim Technical Services, Inc. in Chantilly, VA is seeking an Information System Security Engineer (ISSE) with TS/SCI clearance and polygraph to support data and systems integration and A&A activities. You will design security controls, perform vulnerability assessments, and liaise with ISSMs to resolve issues in a multi‑enclave environment.
A bachelor’s degree plus 8 years of experience is required. The role focuses on ensuring compliant documentation, embedding IA systems, and coordinating
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