Lead Information System Security Officer (ISSO) / Technical Program Lead

Xtreme Solutions is seeking an experienced Lead Information System Security Officer (ISSO) / Technical Program Lead to provide technical leadership and hands-on cybersecurity support for a federal customer in Washington, DC. This is an opportunity for an accomplished federal cybersecurity professional who can lead an ISSO team while remaining deeply involved in RMF, authorization, continuous monitoring, vulnerability management, and security-risk decisions.

The ideal candidate has led complex federal authorization activities, can review and challenge technical cybersecurity deliverables, and is comfortable briefing senior Government stakeholders on system risk, authorization status, vulnerabilities, and remediation priorities.

What You’ll Do

• Lead day-to-day technical activities across the ISSO team.
• Assign systems, authorization boundaries, and security workstreams.
• Oversee multiple concurrent RMF authorization and reauthorization activities.
• Review and approve SSPs, SAPs, SARs, POA&Ms, risk assessments, Continuous Monitoring Plans, SIAs, and authorization packages.
• Perform technical QA/QC before cybersecurity deliverables are submitted to the Government.
• Track authorization milestones, dependencies, risks, issues, and corrective actions.
• Oversee POA&M, vulnerability-remediation, and continuous-monitoring activities.
• Coordinate with AOs/AODRs, the CISO, ISSMs, System Owners, assessors, privacy teams, Common Control Providers, and technical remediation teams.
• Resolve conflicting or incomplete cybersecurity information across tools, artifacts, and system records.
• Provide senior-level security posture, authorization, and risk briefings.
• Mentor and provide technical direction to ISSOs, assessors, and cybersecurity analysts.
• Support federal audits and independent security-control assessments.