Cybersecurity SME

Job Title: Cybersecurity Subject Matter Expert (SME) Clearance Required: Active DoD SECRET Work Location: Hybrid - (Washington, DC and Alexandria, VA) Citizenship: U.S. citizenship required

Alpha Omega is seeking a senior Cybersecurity SME to support one of our federal clients. The Cybersecurity SME serves as a senior technical expert and recognized leader in the cybersecurity community, performing Information System Security Engineer (ISSE) services and cybersecurity compliance assessment, management, and reporting for the client information systems and operational technology. The Cybersecurity SME confers with Government management, leads the outline and development of cybersecurity strategies and solutions, resolves complex problems requiring in-depth subject matter knowledge, and advises on the impact of new legislation, mandates, regulations, technologies, and industry best practices relevant to the client.

Key Responsibilities:

• Serve as the designated Information System Security Engineer (ISSE) for assigned client information systems, operational technology (OT), and hybrid cyber-physical platforms; lead the full NIST SP 800-37 RMF lifecycle from categorization through continuous monitoring and decommissioning. • Develop, maintain, and manage RMF authorization packages in eMASS, including SSPs, SCTMs, POA&Ms, Security Assessment Reports, Contingency Plans, Incident Response Plans, risk assessments, hardware/software lists, network topology and boundary diagrams, and data flow diagrams. • Perform Security Readiness Reviews (SRRs); review and analyze ACAS/Nessus vulnerability scan results; assign, track, and validate remediation through patching cycles or POA&Ms, including false-positive management and DISA ticket coordination. • Maintain continuous monitoring and ensure ongoing compliance with DoD, DHS, and USCG security requirements and DISA STIGs; support cATO initiatives, automated evidence collection, and dashboard integration. • Conduct Security Impact Assessments for proposed system changes; participate in change management boards, DHS SELC reviews, acquisition milestones (PMR, PDR, CDR), CONOPS working groups, and technical exchange meetings. • Integrate Zero Trust principles, RMF controls, and OT/ICS-specific security requirements into system designs; conduct security engineering analyses, trade studies, and architectural risk assessments. • Evaluate emerging threats, adversary TTPs, OT/ICS vulnerabilities, and supply-chain risks; recommend safeguards and mitigation strategies that reduce cyber-attack surface and enhance resilience. • Track and report status on authoritative orders (OPORDs, TASKORDs, FRAGOs, ALCOASTs, TCTOs) from JFHQ-DoDIN, USCYBERCOM, and CGCYBER. • Produce weekly, monthly, and quarterly cybersecurity readiness updates, metrics, executive-level briefings, and risk memorandums for Government leadership; respond to ad hoc cybersecurity data calls. • Provide senior technical leadership and mentorship to the ISSE/SME team; formulate and submit continuous improvement recommendations to the COR regarding contracted operations. • If serving as dual-hatted Task Order PjM: act as primary point of contact for the COR; provide day-to-day operational and technical oversight, personnel scheduling, workload prioritization, quality control, and coordination of travel, training, and on/offboarding.