Lead F5 Engineer

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.

Job Description/Preferred Qualifications

Administer, operate, and maintain F5 BIG-IP platforms including LTM, ASM/Advanced WAF, APM, and DNS/GTM.
• Design and support load balancing, SSL offload, traffic steering, persistence, and high-availability (HA) configurations.
• Perform system upgrades, patching, backups, and routine health checks.
• Monitor performance, availability, and capacity to ensure SLA compliance.
• Operate and manage F5 Distributed Cloud (XC Cloud) services including application delivery, global load balancing, and web application & API protection.
• Integrate F5 XC Cloud with on-prem BIG-IP environments in hybrid and multi-cloud designs.
• Troubleshoot application connectivity, latency, and security incidents across distributed environments.
• Configure and tune Web Application Firewall (ASM / Advanced WAF) security policies.
• Support access and authentication integrations such as SSO, LDAP, Oauth2, Active Directory, RADIUS, and SAML.
• Develop and maintain iRules to meet application traffic requirements.
• iRuleLX knowledge is considered advanced and optional, used only for complex integrations.
• Provide Tier 2/3 operational support and participate in on-call or escalation rotations as required.
• Maintain technical documentation, configurations, and operational procedures.

Required Qualifications
• 5 years of hands-on experience with F5 BIG-IP in production environments.

• Strong experience with LTM (mandatory), ASM/Advanced WAF, APM, and DNS/GTM.
• LTM (mandatory)
• ASM / Advanced WAF
• APM
• DNS/GTM (mandatory)

• Strong understanding of F5 ASM / Advanced WAF concepts, including security policy creation and tuning, positive and negative security models, signature management, false-positive reduction, attack mitigation (OWASP Top 10), and analysis of security logs and violation reports in production environments.
• Practical experience with F5 Distributed Cloud (XC Cloud) or strong ability to ramp up quickly.
• Solid understanding of TCP/IP, OSI model, HTTP/HTTPS, and SSL/TLS certificates.
• Experience troubleshooting application and network-layer issues.
• Familiarity with Linux system fundamentals.
• Experience creating and troubleshooting iRules.
Preferred Qualifications
• Experience in hybrid or multi-cloud environments (AWS, Azure, GCP).
• Knowledge of API security and modern application architectures.
• Exposure to Zero Trust or edge security concepts.
Preferred Certification
• F5 Certified Administrator (CA).
• F5 Certified Technology Specialist (CTS – LTM or Security).
• Cloud or security certifications are an advantage.
Experience Level
• Mid-Level: Independent operational ownership of F5 platforms.
• Senior: Architecture input, mentoring, and cross-domain technical leadership.

Minimum Qualifications

Related work experience of 5 years; Bachelor's Level Degree and related work experience of 5 years. Must have working experience in a Enterprise work environment.

We offer a competitive, family friendly total rewards package. We design our programs to reflect our commitment to an inclusive environment, while ensuring we provide benefits that meet the diverse needs of our employees.

KLA is proud to be an equal opportunity employer

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