Position:

Senior Cyber Defense Engineer

Job Description:

What You'll Be Doing: 

Incident Response & Investigations

• Lead complex cyber incident investigations across enterprise, cloud, hybrid, and on-premises environments.

• Conduct end-to-end incident response activities including triage, scoping, containment, eradication, recovery, and post-incident reporting.

• Investigate network intrusions, account compromise, ransomware, insider risk, fraud-related incidents, unauthorized access, and advanced threat actor activity.

• Preserve evidence and maintain chain-of-custody procedures for forensic, legal, compliance, and regulatory investigations.

• Produce clear investigative findings, root cause analysis, executive summaries, and remediation recommendations.

Digital Forensics & Malware Analysis

• Perform DFIR activities across Windows, cloud, identity, endpoint, network, and application environments.

• Conduct dead-box forensic examinations, artifact analysis, timeline analysis, and evidence collection.

• Collect, analyze, and interpret host, network, cloud, email, identity, and application artifacts.

• Analyze suspicious files, malware behavior, persistence mechanisms, attacker tooling, and indicators of compromise.

• Support sensitive investigations involving Legal, HR, Compliance, Insider Risk, and business stakeholders.

Threat Hunting & Detection Engineering

• Conduct proactive threat hunting to identify adversary behaviors, emerging threats, and control gaps.

• Develop, tune, and improve SIEM detections, correlation rules, KQL queries, alerts, dashboards, and response workflows.

• Apply MITRE ATT&CK, threat intelligence, incident lessons learned, and attacker TTPs to improve detection coverage.

• Partner with SOC, Threat Intelligence, Engineering, and Platform teams to validate visibility and improve response outcomes.

• Support continuous improvement of threat detection, alert quality, incident workflows, and security monitoring use cases.

Security Engineering & Platform Support

• Support the engineering, administration, and optimization of cyber security tools and platforms.

• Assist with log source onboarding, data normalization, telemetry validation, and use-case development.

• Partner with Infrastructure, Cloud, Identity, Application, and Security Operations teams to improve visibility and response capability.

• Build scripts, queries, automation, dashboards, and technical workflows that improve investigation speed and quality.

• Help mature enterprise security capabilities across SIEM, EDR, NDR, SOAR, cloud security, identity security, and forensic tooling.

AI, Security Automation & Emerging Technologies

• Use AI-assisted tools, copilots, automation, and scripting to improve investigation efficiency, reporting, and analysis.

• Demonstrate curiosity and willingness to learn emerging AI, automation, and agent-assisted security operations capabilities.

• Contribute to team initiatives involving AI-assisted workflows, personal security agents, team-developed agents, and operational automation.

• Show evidence of hands-on experimentation through lab work, scripting, automation, prompt testing, AI tools, or practical tinkering.

• Understand the security considerations of AI usage, including data protection, responsible use, prompt safety, and operational governance.

Threat Emulation, Red Teaming & Purple Team Support, Preferred

• Apply an offensive security mindset during investigations to better understand attacker behavior, objectives, and tradecraft.

• Support threat emulation and purple team activities that validate detections, controls, and response procedures.

• Use knowledge of penetration testing, red teaming, adversary simulation, or ethical hacking to strengthen blue team defenses.

• Assist with threat actor tracking, attack path analysis, lateral movement analysis, persistence review, and detection validation.

• Preferred experience with MITRE ATT&CK, Atomic Red Team, adversary emulation, detection testing, BAS tools, or offensive security labs.

Leadership & Mentorship

• Serve as a senior technical lead during significant cyber security investigations and incident response efforts.

• Mentor SOC Leads, Security Analysts, Incident Responders, and Security Engineers on investigative and forensic methodologies.

• Contribute to pla