Information System Security Officer (ISSO) with Security Clearance

Company Overview We are Ennoble First, supporting and securing some of the most complex government, defense, and intelligence projects across the country. Our work has meaning and impact on the world around us, but also on us, and that's important. Position Overview Ennoble First is seeking an Information System Security Officer (ISSO) to support mission‑critical intelligence systems within the Analysis Sustainment portfolio. The ISSO will manage authorizations and risks related to the processing, storage, and transmission of information while ensuring compliance with government and corporate cybersecurity requirements. Responsibilities include supporting Assessment and Authorization (A&A) activities, vulnerability management, continuous monitoring, security documentation, and risk mitigation efforts. Primary Responsibilities Develop risk mitigation strategies that contribute to strategic projects, program goals, and business processes. Respond to updates and maintenance of security documentation, including System Security Plans, Plans of Actions and Milestones (POA&Ms), Security Impact Assessments, and Concepts of Operations. Maintain system security plans and related configuration records in customer Service (ServiceNow), XACTA‑360 platform, and security management tools. Drive necessary security changes through steering groups and control review boards to meet Risk Management milestones. Work independently and collaboratively to drive security process improvements, addressing gaps in meeting customer security requirements. Provide guidance to technical teams on implementing secure software and hardware processes, government security standards, and industry best practices. Resolve highly complex security problems by applying technical knowledge, reasoning, and interpretation of requirements. Communicate with program leadership and customer stakeholders regarding significant matters. Apply in‑depth understanding of information security principles, theories, and concepts across a range of programs. Develop and maintain security documentation in accordance with NGA, Intelligence Community, DoD, DISA, NIST, and industry standards. Initiate and coordinate Assessment and Authorization (A&A) and renewal activities with designated authorizing officials. Address Information Assurance and Cybersecurity notices, orders, taskings, and directives following vulnerability and patch management processes. Measure effectiveness of defense‑in‑depth architectures and Zero Trust implementations against known vulnerabilities. Perform security audits and assessments, including creation, tracking, and remediation support for POA&Ms. Coordinate with system administrators and technical teams to remediate vulnerabilities, track findings, and document mitigation activities. Update Security CONOPS and Information Technology Disaster Recovery (ITDR) plans. Manage security profiles and implementation activities for systems and services scheduled for Assessment and Authorization. Work closely with systems engineers, administrators, ISSMs, security teams, and stakeholders to maintain security plans and documentation. Maintain records and documentation related to system upgrades, patches, and connectivity configurations. Evaluate security solutions and implementation strategies while maintaining the operational security posture of development, integration, and deployed capabilities. Provide training and approve user access and identification, authorization, and authentication mechanisms for information systems. Required Qualifications BS degree and 8–12 years of relevant experience. Active TS‑SCI clearance with Polygraph. Understanding and application of the ICD‑503 and NIST risk management framework. Experience developing and maintaining RMF security documentation including SSPs, POA&Ms, SIAs, CONOPS, and A&A artifacts. Experience supporting system accreditation activities, security control assessments, continuous monitoring, vulnerability remediation, and authorization efforts within NIST RMF or ICD‑503 environments. Experience with XACTA, XACTA 360, HBSS, ACAS, Nessus, SPLUNK, or comparable tools. Preferred Qualifications Experience with NGA. Three years operating, analyzing, and resolving vulnerability scan results using tools such as Nessus or Tenable Security Center. Active CISSP or ISACA CISM certification. Intelligence Community experience. Pay Range $135,000–$160,000 Equal Employment Opportunity Ennoble First is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to any characteristic protected by law. E‑Verify Ennoble First participates in E‑Verify. Learn more at #J-18808-Ljbffr Ennoble First Inc.