Senior Insider Threat Engineer

Purview Technology Operations - Configure, tune, and maintain Microsoft Purview Insider Risk Management (IRM), Communication Compliance (CC) policies to support enterprise insider threat detection.

Policy & Use Case Development - Build and refine IRM policies, CC policies, sensitive information types (SITs), trainable classifiers, and adaptive scopes that identify both negligent and malicious insider risk activities.

Alert Triage & Tuning - Investigate Purview-generated alerts, perform root-cause analysis on false positives, and execute tuning cycles to improve signal fidelity and reduce analyst fatigue.

eDiscovery & Investigative Support - Leverage Microsoft Purview eDiscovery (Standard and Premium) to support insider threat investigations, legal hold requests, and HR/Legal inquiries, including case creation, custodian management, search, review, and defensible export of evidence.

Endpoint Insider Threat Monitoring - Operate and tune Proofpoint Insider Threat Management (ITM) to capture user activity telemetry, screen captures, and file movement evidence, ensuring detection rules and policies remain aligned with current insider risk use cases.

Cross-Platform Correlation - Correlate Purview and Proofpoint ITM telemetry with SIEM, UEBA, and EDR data sources (e.g., Splunk, Defender XDR) to enrich investigations and surface higher-confidence insider risk signals.

Governance & Framework Alignment - Support the development and maintenance of policies, procedures, and technical standards for Purview- and Proofpoint-based insider threat controls aligned with industry best practices.

Automation & Tooling - Develop scripts and queries (KQL, PowerShell, Graph API) to automate policy deployment, reporting, and operational health checks across Purview workloads.

Metrics & Reporting - Track KPIs/KRIs (e.g., alert volume, MTTR, policy efficacy, false positive rate) and produce operational reporting on platform health and detection coverage.

Regulatory Support - Ensure insider threat technologies and practices meet requirements under HIPAA, HITRUST, PCI-DSS, SOC2, and related regulatory frameworks.

5+ years of experience in cybersecurity with a focus on insider threat, data loss prevention, information protection, and/or compliance technologies.

Hands-on experience configuring and tuning Microsoft Purview Insider Risk Management, Communication Compliance, and DLP, including policy design, scoping, and alert triage.

Experience supporting eDiscovery activities (Microsoft Purview eDiscovery Standard/Premium or comparable platform) in support of investigations or legal holds.

Working knowledge of endpoint insider threat monitoring platforms such as Proofpoint Insider Threat Management (ITM) or equivalent (e.g., DTEX, Teramind).

Working knowledge of insider threat tactics, techniques, and procedures (TTPs), including data exfiltration, fraud, IP theft, and sabotage.

Proficiency with KQL and PowerShell for querying, automation, and policy management across the Microsoft 365 / Purview ecosystem.

Strong communication skills, with the ability to translate technical findings into business risk language for both peers and leadership.

Microsoft Certified: Information Security Administrator Associate (SC 401)

Additional certifications in insider threat or cybersecurity (e.g., ITPM, ITVA, CISSP, CISM).

Bachelor's degree or higher in Cybersecurity, Information Technology, Data Science, or related field.

Hands-on experience with Claude Code or similar agentic AI development tools to build internal utilities, automate policy/detection artifact generation, and support insider threat operations.

Familiarity with Microsoft Graph API, adaptive scopes, sensitivity labels, and trainable classifier development.

Hands-on experience administering Proofpoint Insider Threat Management (ITM), including agent deployment, rule tuning, and evidence handling.

Experience integrating Purview and Proofpoint signals with SIEM/UEBA platforms (e.g., Splunk, Defender XDR) for enriched investigations.