Operational Technology (OT) Security Engineer

Who We Are Applied Materials is a global leader in materials engineering solutions used to produce virtually every new chip and advanced display in the world. We design, build and service cutting-edge equipment that helps our customers manufacture display and semiconductor chips – the brains of devices we use every day. As the foundation of the global electronics industry, Applied enables the exciting technologies that literally connect our world – like AI and IoT. If you want to push the boundaries of materials science and engineering to create next generation technology, join us to deliver material innovation that changes the world.

What We Offer

Salary: $124,000.00 - $171,000.00 Location: Santa Clara,CA You’ll benefit from a supportive work culture that encourages you to learn, develop, and grow your career as you take on challenges and drive innovative solutions for our customers. We empower our team to push the boundaries of what is possible—while learning every day in a supportive leading global company. Visit our Careers website to learn more. At Applied Materials, we care about the health and wellbeing of our employees. We’re committed to providing programs and support that encourage personal and professional growth and care for you at work, at home, or wherever you may go. Learn more about our benefits. Why Join Us? Be at the forefront of securing next-generation industrial systems in one of the most innovative companies in the world. We’re looking for a visionary leader who can design resilient OT/IoT architectures and drive vulnerability management strategies that protect critical operations across semiconductor, manufacturing, and advanced technology environments.

About the Role

This is not just another security role—it’s a chance to shape the future of OT/IoT cybersecurity. You’ll combine hands-on technical depth with strategic architectural vision, ensuring our industrial ecosystems remain secure, compliant, and future-ready. The OT Security Engineer is responsible for safeguarding industrial control systems (ICS), SCADA environments, and other OT assets against cyber threats. This role ensures the confidentiality, integrity, and availability of critical infrastructure systems while maintaining operational functionality. The engineer integrates cybersecurity best practices into OT environments, balancing security with operational requirements What You’ll Do Security Architecture & Design

• Develop secure architectures for OT systems, including ICS, SCADA, PLCs, and HMIs.
• Conduct design and architecture reviews to ensure compliance with security standards (e.g., ISA/IEC 62443, NIST 800-82).
• Implement network segmentation, secure remote access, and least-privilege models across IT/OT boundaries.
• Drive architectural reviews and influence security strategy across the enterprise Risk Management & Compliance
• Perform risk assessments and vulnerability analysis for OT environments.
• Ensure compliance with regulatory frameworks (e.g., RMF, ISO 27001). Advanced Vulnerability Management
• Lead vulnerability assessments for PLCs, SCADA, IIoT devices, and industrial networks.
• Develop proactive remediation strategies aligned with industry frameworks and operational priorities.
• Integrate threat intelligence into architecture and vulnerability workflows. Innovation & Collaboration
• Partner with engineering, operations, and IT teams to embed security into the system lifecycle.
• Evaluate emerging technologies and tools to strengthen OT/IoT security posture.
• Work closely with facilities and lab manufacturing teams to integrate security into operational workflows.
• Provide guidance and training to lab, manufacturing team personnel on OT security best practices What We’re Looking For
• Deep expertise in OT/IoT security architecture and vulnerability management.
• 7–10 years in OT/ICS cybersecurity with proven experience designing secure industrial environments.
• Strong knowledge of ICS protocols (Modbus, OPC, Ethernet/IP) and industrial control systems.
• Familiarity with ISA/IEC 62443, Purdue Model, NIST CSF, ISO 27001.
• Hands-on experience with Armis, Dragos, Claroty, or similar platforms.

Preferred Qualifications

• Experience in highly regulated environments (energy, manufacturing, pharma).
• Knowledge of threat modeling and penetration testing for OT systems.
• Familiarity with emerging technologies like IoT in industrial environments.
• Semiconductor or advanced manufacturing experience.
• Knowledge of SEMI standards (E187/E188/E191).
• Certifications: GICSP, CISSP, or equivalent. Soft Skills:
• Strong communication skills for cross-functional collaboration.
• Ability to translate technical security concepts for non-technical stakeholders. Additional Information Time Type: Full time Employee Type: Assignee / Regular Travel: Yes, 10% of the Time Relocation Eligible: The salary offered to a selected candidate will be based on multiple factors including location, hire grade, job-related knowl

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