Title: Senior Cybersecurity Threat Hunter III Location: Alexandria, VA Clearance: TS/SCI with the ability to obtain and maintain a CI polygraph Description: Invictus, a Red River company, delivers technology and services supporting government and national security missions. We combine cleared mission expertise with enterprise engineering, technology partnerships and large-program execution in support of advanced modernization, cybersecurity, intelligence and systems integration. Our teams support complex operational environments across the U.S. and around the world, helping customers strengthen resilience, accelerate mission outcomes and deploy capabilities that meet demanding mission requirements. Learn more at www.InvictusIC.com. Job Details: Lead complex, hypothesis-driven threat hunts across multiple enterprise data sources and enclaves to identify sophisticated or previously undetected adversary activity Proactively analyze security telemetry to identify indicators of compromise, anomalous behavior, and adversary activity that has not met an incident threshold or has evaded automated security controls Assess and correlate data from multiple sources, including network, endpoint, identity, SIEM, threat intelligence, vulnerability, and other available security data Document hunt activity, findings, evidence, and recommended follow-on actions in authorized systems and initiate or support incident-response processes when malicious activity is identified Provide relevant findings and trends for SOC operational reporting, significant-activity reporting, and defensive awareness Develop and prioritize hunt campaigns based on threat intelligence, mission risk, adversary TTPs, detection coverage, incident lessons learned, and environmental changes Perform advanced behavioral analysis and identify patterns indicative of persistence, credential abuse, lateral movement, command and control, collection, or other adversary activity Serve as an escalation point for junior threat analysts and provide technical guidance on hunt methodology, analytical pivots, and evidence validation Translate successful hunt findings into actionable requirements for detection engineering, watch operations, security engineering, and incident response Develop reusable hunt playbooks, queries, analytic methods, documentation standards, and training materials Mentor junior personnel and support exercises, knowledge sharing, and assessment of threat-analysis proficiency Requirements: Bachelor's degree from an accredited institute in a technical discipline applicable to the position; an additional 4 years of may be substituted in lieu of a degree Minimum six (6) years of relevant experience in addition to education level Significant hands-on experience conducting threat hunting, advanced cyber analysis, or adversary-focused investigations Strong knowledge of MITRE ATT&CK, adversary TTPs, threat intelligence application, and network/host/identity security telemetry Experience developing hunt hypotheses and converting analytical findings into detection or defensive improvements Experience mentoring analysts or leading complex analytical efforts Must possess current DoD 8570 IAT II or IAM II certification Experience working in a DoD or IC environment Current active TS/SCI clearance, with the ability to obtain and maintain a CI polygraph Equal Opportunity Employer/Veteran/Disabled