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Sr. Information System Security Officer (ISSO)

Themis Insight · Fort Meade, MD · United States · On-site

Posted Oct 8, 2026

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Themis Insight solves difficult business, IT, and analytic problems by addressing the whole problem – not just the symptoms – using interdisciplinary approaches that are both practical and innovative. We provide fresh alternatives to ordinary, mainstream consulting firms through small, highly skilled, and hand-picked teams that can meet clients' needs in any industry. Our broad interdisciplinary understanding allows us to provide the right solution, even if it is from outside the industry or traditionally defined problem space. We bring Public and Private, Civilian and Military expertise to every case. We are hiring a Sr. Information System Security Officer (ISSO) to work in the Ft. Meade, MD vicinity . Position location is subject to change based on central MD client's needs. Required: TS/SCI with a Polygraph In this position, you will manage multiple SSPs, communicate & coordinate security policies, standards & methodologies, develop & maintain documentation and understand agency RMF processes. Description: Provides support for a program, organization, system, or enclave’s information assurance program. Provides support for proposing, coordinating, implementing, and enforcing information systems security policies, standards, and methodologies. Maintains operational security posture for an information system or program to ensure information systems security policies, standards, and procedures are established and followed. Assists with the management of security aspects of the information system and performs day-to-day security operations of the system. Evaluate security solutions to ensure they meet security requirements for processing classified information. Performs vulnerability/risk assessment analysis to support certification and accreditation. Provides configuration management (CM) for information system security software, hardware, and firmware. Manages changes to system and assesses the security impact of those changes. Prepares and reviews documentation to include System Security Plans (SSPs), Risk Assessment Reports, Certification and Accreditation (C&A) packages, and System Requirements Traceability Matrices (SRTMs). Supports security authorization activities in compliance with National Institute of Standards and Technology Risk Management Framework (NIST RMF). The Level 2 Information Systems Security Officer (ISSO) shall possess the following capabilities: Provide support to senior ISSOs for implementing, and enforcing information systems security policies, standards, and methodologies Assist with preparation and maintenance of documentation Assist in the evaluation of security solutions to ensure they meet security requirements for processing classified information Assist with the CM for information system security software, hardware, and firmware Maintain records on workstations, servers, routers, firewalls, intelligent hubs , network switches, etc. to include system upgrades Propose, coordinate,…