Job Description. Location. McLean,VA,US. Remote Work. Hybrid. Job Number. R0182716. Share job via. Share. IS Security Specialist. Key Role. Maintain responsibility for all Information Systems Security Officer (ISSO) duties in support of Information Systems, CSS Risk Management Framework, IC Directive, 503 Practitioners manual and the Committee on National Security Systems Instruction, and 1253 security controls. Serve as an advisor on all matters...