Title: Senior Cyber Defense Analyst 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: • Perform and lead advanced investigation of complex security events and incidents across network, endpoint, identity, firewall, vulnerability, and other available telemetry • Perform cyber defense incident triage, including validation, enrichment, determination of scope, urgency, potential impact, and appropriate escalation • Support incident handling across detection, investigation, analysis, containment/remediation coordination, recovery, and reporting in accordance with established authorities and procedures • Correlate incident and security data across multiple sources to identify affected systems, users, vulnerabilities, adversary activity, and related events • Collect and preserve relevant intrusion artifacts and investigative evidence in accordance with established procedures • Communicate incident status, findings, risk, and recommended actions to SOC personnel, technical teams, management, and government stakeholders as appropriate • Serve as a senior technical escalation point to less expereinced team members and provide hands-on guidance during complex investigations • Lead portions of incident response activities, including scoping, evidence analysis, containment recommendations, technical coordination, and post-incident review • Conduct proactive analysis and threat hunting when warranted to identify related or previously undetected activity • Develop, maintain, and improve analyst runbooks, investigative procedures, escalation criteria, incident playbooks, and shift-turnover practices • Partner with threat analysts and engineering personnel to identify telemetry gaps, detection gaps, false positives, and opportunities for improved enrichment or automation • Mentor junior analysts, support analyst qualification and exercises, and perform quality review of investigations and case documentation • Translate incident lessons learned into improved detections, procedures, training, and defensive recommendations 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 cybersecurity investigations and incident response in enterprise environments. • Strong knowledge of network and host-based investigation, common adversary tactics, techniques, and procedures, and the MITRE ATT&CK framework • Experience developing or improving SOC procedures, incident playbooks, runbooks, or analyst training materials • Experience serving as an escalation point, technical lead, or mentor for cyber defense analysts • 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