Mantech seeks a motivated, career driven, and customer-focused Information System Security Officer (ISSO) to join our team in Columbia, Maryland.   As an ISSO, you will work alongside customers, Integrated Product Teams (IPTs), and vendors to support the implementation and compliance of advanced EIT capabilities through Data Center & Compute Services. You will manage cybersecurity documentation, assess system vulnerabilities, and support the Risk Management Framework (RMF) lifecycle in alignment with Sponsor policies.   Update and maintain hardware and software inventory records, including associated change logs Support and coordinate Secure the Enterprise (STE) and Secure the Network (STN) activities Leverage sponsor tools such as Gatekeeper, Xacta, SEAR, and LatteArt in daily operations   Bachelor’s degree with 12+ years of relevant experience OR associate’s degree with 15 years of relevant experience OR high school diploma/GED with 20 years of relevant experience Experience managing POAMs, performing audit log reviews, and maintaining secure system inventories Acceptable certifications include CAP/CND/Cloud+/GSLC/Security + CE/HCISSP/CASP+CE/CISM/CISSP/ or CCISO)   Experience with the Service Now (SNOW) platform Occasionally moves about inside the office to access file cabinets, office machinery, etc. Frequently communicates with co-workers, management, and customers, including delivering presentations.