Office Infrastructure & Security Management Lead

Company Overview

KLA is a global leader in diversified electronics for the semiconductor manufacturing ecosystem. Virtually every electronic device in the world is produced using our technologies. No laptop, smartphone, wearable device, voice‑controlled gadget, flexible screen, VR device or smart car would have made it into your hands without us. KLA invents systems and solutions for the manufacturing of wafers and reticles, integrated circuits, packaging, printed circuit boards and flat panel displays.

The innovative ideas and devices that are advancing humanity all begin with inspiration, research and development. KLA focuses more than average on innovation and we invest 15% of sales back into R&D. Our expert teams of physicists, engineers, data scientists and problem‑solvers work together with the world’s leading technology providers to accelerate the delivery of tomorrow’s electronic devices. Life here is exciting and our teams thrive on tackling really hard problems.

There is never a dull moment with us.

The Information Technology (IT) group at KLA is involved in every aspect of the global business. IT’s mission is to enable business growth and productivity by connecting people, process, and technology. It focuses not only on enhancing the technology that enables our business to thrive but also on how employees use and are empowered by technology. This integrated approach to customer service, creativity and technological excellence enables employee productivity, business analytics, and process excellence.

The position of Microsoft 365 Infrastructure & Security Management is responsible for the strategic direction, operational excellence, security posture, and lifecycle management of the organization's Microsoft 365 ecosystem. This role leads the administration, engineering, governance, security, and continuous improvement of Microsoft 365 services with deep skills in Exchange Online. The individual will be accountable for ensuring a secure, highly available, scalable, and compliant Microsoft 365 environment while driving enterprise email security initiatives through Proofpoint, Microsoft Defender, anti‑phishing programs, threat prevention, and tenant governance.

This role works closely with Cybersecurity, Infrastructure Operations, Enterprise Architecture, Compliance, Risk Management, and business stakeholders to deliver secure modern workplace services for a global enterprise.

• Own the strategy, roadmap, architecture, and operations of the Microsoft 365 platform.
• Lead Microsoft 365 tenant administration and governance.
• Ensure platform availability, performance, scalability, and reliability.
• Define operational standards, policies, and best practices for Microsoft 365 services.
• Manage service lifecycle planning, upgrades, feature adoption, and platform optimization.
• Develop and maintain M365 governance and operating models.

• Lead global administration of Microsoft Exchange Online.
• Manage email routing, mail flow, connectors, transport rules, and SMTP infrastructure.
• Oversee mailbox provisioning, migrations, retention, archiving, and lifecycle management.
• Manage hybrid Exchange environments when applicable.
• Ensure email platform health, performance, uptime, and service availability.
• Troubleshoot complex messaging issues and coordinate escalations with Microsoft support.
• Establish standards for email security, compliance, and operational governance.

• Own enterprise email security strategy and operations.
• Lead phishing prevention, business email compromise (BEC) protection, and email threat management…