Information System Security Officer

MANTECH seeks a motivated, career and customer-oriented Information System Security Officer ISSO to join our team in the Chantilly, VA area.A qualified ISSO will help maintain the operational security posture of assigned information systems while collaborating closely with the Information System Security Manager ISSM. Ensure that cyber security requirements are effectively integrated into information systems’ operations, management, and documentation. Provide critical systems, application and infrastructure support to the customer and work with a team across multiple technical areas to include security and systems administration.Responsibilities include, but are not limited to:Coordinate with government information system owners and industry partners to maintain compliance with customer requirements including supporting ICD 503 Assessments and Authorizations of industry partners’ systemsSupport the Assessment and Authorization process by performing risk assessments, preparing and reviewing documentation in accordance with the Risk Management Framework (RMF), identify deficiencies an provide recommendations for solutions, track Plan of Action and Milestones (POA&M) through mitigation and risk acceptance, and conduct weekly, monthly, and annual Continuous Monitoring (CONMON) activitiesImplement vulnerability management programs, including tracking and addressing IAVAs and security patches, accessing applicability to existing systems, and ensuring closurePerform data transfers between air-gapped systems at varying classification levels using tools for virus and dirty word scanning in accordance with media control and data transfer policiesAssess and respond to security-related incidents, alerts, and requests to include software requestsPrepare systems and components for disposal and assist industry partners with disposal of equipmentTravel may be required up to 25% of the time CONUSMinimum Qualifications:Bachelor’s degree and 4 or more years of relevant information system security experienceFamiliarity with information system security principlesExperience with interfacing and briefing military, civilian, and contractor personnel at all levelsKnowledge of security-related IC and DoD policies, procedures and operating instructionsOne of the following certifications required Information Assurance Management (IAM) Level I: CAP, GSLC, CISM, CASP, CISSP, CCISCO, Security+Preferred Qualifications:Experience with Insider threat is highly desiredSecurity Clearance Requirements:Must have a current / active TS/SCI with PolygraphPhysical requirements:Must be able to remain in a stationary position for more than 50% of the timeFrequently communicates with co-workers, management, and customers, which may involve delivering presentationsNeeds to occasionally move about inside the office to access file cabinets, office machinery, etc.

Created: 2025-08-15