Senior Network Security Engineer

Applied Materials is the global leader in materials science and engineering solutions that are at the foundation of virtually every new semiconductor chip and advanced display in the world. The equipment that we create and service is essential to advancing AI and accelerating the commercialization of next‑generation semiconductor chips. Join us and push the boundaries of materials science and engineering in a company at the foundation of the electronics industry.

The work we do together advances the world’s technology.

Salary: $ - $

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.

The Senior Network Security Engineer is a hands‑on technical leader responsible for designing, implementing, securing, and operating enterprise firewall and network security infrastructure across data centers, manufacturing, OT, R&D, campus, and cloud environments. The primary focus of this role is Palo Alto Networks firewall architecture, engineering, policy governance, lifecycle management, and security posture optimization, with supporting expertise in Fortinet, SSE/SASE, Zero Trust, cloud security, routing, and security automation.

Applied’s IT organization has a long reputation of being a great place to work. The IT team has been recognized as one of Computerworld’s 100 Best Places to Work in IT. In addition, numerous Applied IT leaders have been honored as CIO Magazine’s Ones to Watch or Computerworld Premier 100 IT leaders. We are seeking a Senior Network Security Engineer with deep expertise in enterprise firewall architecture and engineering to design, implement, secure, and continuously improve Applied Materials’ global network security infrastructure.

This role is hands‑on and highly technical, with primary responsibility for Palo Alto Networks NGFW, Panorama, Strata Cloud Manager, firewall policy architecture, security controls, lifecycle management, advanced troubleshooting, and automation across global data centers, manufacturing facilities, campuses, R&D, OT, and cloud environments. The role partners closely with cybersecurity, cloud, network, OT, application, and infrastructure teams to deliver secure, resilient, scalable, and standardized network security services.

• Expert-level experience in enterprise network security and firewall technologies within large, global environments.
• Deep hands‑on expertise with Palo Alto Networks NGFW, PAN‑OS, Panorama, Strata Cloud Manager, PA‑Series and VM‑Series.
• Experience with Fortinet Forti Gate, Forti Manager, and Forti Analyzer is preferred.
• Strong experience architecting and governing enterprise firewall rule bases, security policies, NAT, segmentation, policy lifecycle, recertification, and rule optimization.
• Deep knowledge of App‑, User‑, Device‑, Security Profiles, SSL/TLS Decryption, Advanced Threat Prevention, IPS, URL Filtering, DNS Security, and Wild Fire.
• Experience with firewall posture and policy‑management solutions including Palo Alto AIOps/BPA, SCM, Skybox, and Tufin.
• Expertise in high‑availability firewall architectures using Active/Passive, Active/Active, HA clustering, ECMP, VSYS/VDOM, and multi‑tenancy.
• Strong…