General Motors is seeking a Senior Cybersecurity Incident Handler to investigate, coordinate, and resolve cyber security incidents across the enterprise. This hybrid role in Warren, MI focuses on incident triage, evidence-driven investigation, containment and eradication activities, recovery support, and clear escalation based on risk and business impact.
You will also help make response operations more repeatable and scalable by turning manual or error-prone tasks into documented workflows, automations, and integrations. The position uses modern endpoint and SIEM capabilities, along with scripting and operational tooling to improve how incidents are analyzed, documented, and executed across Security Operations.
What you will do
- Triage and investigate security alerts and incidents across endpoints, identities, malware, suspicious processes, persistence mechanisms, network activity, and potential data exposure.
- Develop investigative plans, gather and preserve relevant evidence, analyze endpoint telemetry and live-response results, and document findings.
- Perform or coordinate approved containment, eradication, and remediation actions such as host isolation, live response, file retrieval or removal, directory cleanup, scheduled-task removal, and related endpoint actions.
- Use CrowdStrike Falcon, Next-Gen SIEM, live-response tooling, IT Automation, and other security platforms to investigate and respond to incidents.
- Coordinate incident activities with Response, Detect, Endpoint, Engineering, Insider Threat, Threat Intelligence, and other stakeholders.
- Assess incident severity, business impact, scope, and risk, escalate appropriately, and provide clear status updates to technical and leadership audiences.
- Identify indicators of compromise and investigative leads, collaborating with detection and intelligence teams to improve correlation rules, threat hunting, and monitoring coverage.
- Create complete, accurate, and durable incident documentation, including timelines, investigative actions, evidence, containment decisions, root-cause findings, and lessons learned.
- Contribute to and maintain response playbooks, wiki content, workflow documentation, and operational procedures.
- Identify recurring operational friction and help develop secure automation, scripts, dashboards, integrations, and workflows that improve responder efficiency.
- Test new response capabilities, validate safeguards and permissions, and support deployment across appropriate development, test, and production environments.
- Participate in incident reviews, process improvement, mentoring, and knowledge-sharing activities across Security Operations.
Required capabilities
- Incident triage, scoping, evidence collection, endpoint investigation, containment, remediation, and operational recovery.
- Windows live-response design and deployment, including multi-host workflows, timeout handling, YARA scanning, file retrieval, and file removal.
- CrowdStrike Falcon administration and engineering across Fusion Workflows, IT Automation, Next-Gen SIEM, custom IOA rules, lookup files, detections, APIs, and endpoint response.
- Workflow design for directory removal, scheduled-task removal, live-response deployment, file operations, host-online notification, detection auto-closure, host containment, and BitLocker recovery actions.
- CrowdStrike integrations with Slack, MISP, Sguil, GitHub, and other operational tools.
- Experience developing correlation rules, including real-time NGSIEM rules and rules supporting suspected DPRK activity investigations.
- Python development for security exports, command-line utilities, API integrations, data transformation, and operational services.
- GitHub repository design and delivery via pull requests, including GitHub Actions, GitHub Pages, workflow automation, and cross-repository synchronization.
- Multi-environment CI/CD deployment for CrowdStrike and Velociraptor capabilities.
- Architecture of MISP-to-CrowdStrike IOC integration for Intel and Detect.
- Migration and recovery of more than 80 Next-Gen SIEM correlation rules after an author-permission dependency created operational risk.
- Consolidation and migration of Response, Security Operations, Detect, Engineering, and NSM SID documentation into a unified GitHub Pages wiki.
- Creation of automated incident-writeup synchronization from the GitHub wiki to Confluence.
- Strong technical documentation skills covering deployment, single-host and multi-host use, timeout configuration, troubleshooting, and operational procedures.
Key technologies
Python, CrowdStrike Falcon, Fusion Workflows, IT Automation, Next-Gen SIEM, YARA, NGSIEM, BitLocker, Slack, MISP, Sguil, GitHub, Confluence, GitHub Actions, GitHub Pages, CI/CD, Terraform, GitOps, Velociraptor, MISP-to-CrowdStrike IOC integration, GitHub Pages wiki
Benefits
- Relocation benefits are available for candidates who qualify under company policy.
Preferred qualifications
- Experience with Velociraptor or comparable endpoint live-response platforms.
- Experience with YARA, endpoint telemetry, host artifacts, and forensic collection workflows.
- Experience integrating MISP, CrowdStrike, Slack, Confluence, GitHub, Sguil, Databricks, or comparable enterprise security platforms.
- Experience supporting regulated or highly governed enterprise environments.
- Experience contributing to open-source security or infrastructure tooling.
- Experience migrating documentation or operational content between wiki platforms.
- Experience designing secure automation with role-based access, audit trails, approval controls, and rollback considerations.
Hybrid and relocation notes
- This role is categorized as hybrid, with the selected candidate expected to report to a specific location at least 3 times a week or other frequency dictated by their manager.
- GM does not provide immigration-related sponsorship for this role.
- Relocation benefits are available for candidates who qualify under company policy.
