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Senior Cybersecurity Defense Analyst III

Alexandria, VA, USFull-timePosted Sep 5, 2026

Job description

Title: Senior Cyber Defense Analyst III

Location: Alexandria, VA

Clearance: TS/SCI with the ability to obtain and maintain a CI polygraph

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

Description copied from Invictusic's careers page. Read the full posting before you apply.

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