Sr Security Engineer _ Proofpoint

Sr Security Engineer

Location: North Quincy, MA Full Time Only

Responsibilities:

Serve as the Subject Matter Expert (SME) for the Proofpoint platform, providing technical leadership and guidance to security teams.

Lead the deployment and configuration of Proofpoint capabilities, including OCR, EDM, IDM, policy creation, and report development.

Design, implement, and optimize advanced DLP policies and detection logic aligned to organizational risk and compliance needs.

Develop, maintain, and improve SOPs, operational workflows, triage playbooks, and incident remediation processes.

Oversee and perform complex triage, root-cause analysis, and incident remediation, ensuring timely resolution and proper documentation.

Continuously evaluate platform performance, drive tuning cycles, and recommend enhancements to improve accuracy and reduce false positives.

Act as the escalation point for SOC, Compliance, and Legal teams on all Proofpoint-related incidents and platform-related questions.

Requirements:

Strong SME-level experience on the Proofpoint platform, with deep hands-on expertise in OCR, EDM, IDM, policy engineering, and reporting.

Demonstrated success in deploying and operationalizing Proofpoint solutions in large, complex enterprise environments.

Proven experience creating SOPs, triage processes, runbooks, and incident handling frameworks for DLP operations.

Advanced understanding of DLP methodologies, content inspection techniques, regex, fingerprinting, and data classification.

Solid background in incident response, including triage, investigation, containment, user communication, and remediation.

Ability to work collaboratively with Security Operations, Privacy, Compliance, HR, and Legal during investigations and policy lifecycle management.

Strong documentation skills and the ability to articulate technical details to leadership and non-technical stakeholders.

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