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Information System Security Officer (ISSO), TS/SCI with Polygraph

GDIT | Chantilly, United States | Posted June 06, 2026

Position Overview

Job Description:

This ISSO position is an entry to mid-level information system security professional providing support to all contract service teams for daily duties involving system compliance validation, vulnerability management response coordination, data transfer (Low to High and High to Low),
and ongoing audit review and correlation, as well as general support to ongoing continuous monitoring activities.

The successful candidate will possess and be able to apply knowledge and experience with standard information system security concepts, practices, and procedures with the following focus areas:

  • Thorough understanding and application of network security principles, practices, and implementations;
  • Working knowledge of cross-functional integration of information systems into a physical security environment;
  • Working knowledge of system functions, security policies, technical security safeguards, and operational security meas...

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