Sr. Director - Security Platform Engineering

About Us:

Proofpoint is a global leader in human- and agent-centric cybersecurity. We protect how people, data, and AI agents connect across email, cloud, and collaboration tools. Over 80 of the Fortune 100, 10,000 large enterprises, and millions of smaller organizations trust Proofpoint to stop threats, prevent data loss, and build resilience across their people and AI workflows. Our mission is simple: safeguard the digital world and empower people to work securely and confidently. Join us in our pursuit to defend data and protect people.

How We Work:

At Proofpoint you’ll be part of a global team that breaks barriers to redefine cybersecurity guided by our BRAVE core values: 

Bold in how we dream and innovate

Responsive to feedback, challenges and opportunities

Accountable for results and best in class outcomes

Visionary in future focused problem-solving

Exceptional in execution and impact

Company Overview

Proofpoint is a global leader in human- and agent-centric cybersecurity, securing how people, data and AI agents connect across email, cloud and collaboration tools. Proofpoint is a trusted partner to over 80 of the Fortune 100, over 10,000 large enterprises, and millions of smaller organizations in stopping threats, preventing data loss, and building resilience across people and AI workflows. Proofpoint’s collaboration and data security platform helps organizations of all sizes protect and empower their people while embracing AI securely and confidently.

Job Summary

The Senior Director of Security Engineering will shape and lead Proofpoint’s enterprise security engineering vision.  Reporting directly to the CISO, this role is accountable for advancing the platforms, tooling, and systems that protect our people, products, and data.  You will drive the global security engineering strategy—designing and operating resilient, scalable defenses across our infrastructure, applications and data.  Collaborating with world-class experts across Proofpoint, you’ll elevate protection through automation, innovation, and engineering excellence.

This role leads critical domains including security architecture, the agentic workspace, cloud protection, detection engineering, and automation. You will partner with Product Engineering, IT, Threat Research, and Information Security peers to ensure our controls are effective, adaptive, and aligned with Proofpoint’s mission to protect people and defend data.

Key Responsibilities

Strategic Leadership

• Define and implement the long-term vision, strategy, and roadmap for Proofpoint’s security engineering function, aligned with company objectives and emerging threats.

• Establish and evolve enterprise security architecture, ensuring secure design across infrastructure, applications, and identity systems.

• Drive the design and build of scalable detection, response, and automation platforms that enable continuous visibility and protection across Proofpoint’s environment.

• Integrate industry-leading DevSecOps practices, security automation, and zero-trust principles into the broader technology ecosystem.

• Develop and maintain best-in-class security controls frameworks that enable innovation while minimizing risk, including initiatives to secure the agentic workspace.

Team Leadership & Development

• Build, lead, and mentor a global team of security engineers and managers, fostering a culture of technical excellence, innovation, and accountability.

• Empower teams to design, implement, and operate high-reliability security solutions at scale.

• Drive professional growth, diversity, and inclusion across the security engineering organization.

Cross-Functional Collaboration

• Partner with product engineering and operations business units to embed security into system design, configuration, and delivery.

• Collaborate with Threat Research and Detection Response teams to ensure alignment between detection engineering and incident response capabilities.

• Work closely with Compliance and Legal to ensure Proofpoint meets regulatory and industry standards (FedRAMP, SOC 2, ISO 27001, PCI, etc.).

Operational Excellence & Risk Management

• Oversee continuous monitoring, vulnerability management, and security automation to identify and mitigate risks rapidly.

• Ensure effective logging, telemetry, and observability of security controls across hybrid and multi-cloud environments.

• Define and track performance metrics and KPIs to assess control effectiveness, maturity, and engineer