Senior Linux & UNIX Systems Administrator

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. Group/Division 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 Key Responsibilities Enterprise Linux & UNIX Administration Administer, maintain, and support large-scale Linux and UNIX environments including: Red Hat Enterprise Linux (RHEL) Oracle Linux Solaris 10/11 Ubuntu and other enterprise Linux distributions Perform OS installation, upgrades, patching, troubleshooting, performance tuning, and capacity planning. Develop automation using shell scripting, Ansible, Python, and other infrastructure automation tools. ERP & Mission-Critical Application Support Provide infrastructure support for: SAP S/4HANA SAP ECC Oracle ERP and associated applications SAP application and database landscapes Coordinate with application, database, storage, network, and security teams to ensure high availability and optimal performance. High Availability & Clustering Design, implement, manage, and troubleshoot: Veritas Cluster Server (VCS) Linux High Availability Clusters Solaris Clustering environments SAP High Availability architectures Ensure business-critical applications meet availability and recovery objectives. Kubernetes & Container Platforms Deploy and administer: Kubernetes clusters Container platforms (Docker, Podman) Container orchestration and lifecycle management Support modernization initiatives involving cloud-native and hybrid infrastructure solutions. Virtualization & Cloud Infrastructure Manage VMware, Nutanix, Hyper-V, or similar virtualization platforms. Design and support virtualized enterprise workloads. Optimize infrastructure utilization and resource allocation. Support hybrid cloud integration and cloud migration initiatives. Storage & Data Protection Administer enterprise storage environments including: SAN storage NAS storage NFS/CIFS environments Enterprise backup solutions Work with storage teams on provisioning, performance optimization, replication, and capacity management. Disaster Recovery & Replication Design and maintain enterprise DR strategies supporting critical workloads. Implement and manage: Storage replication technologies VMware SRM Database replication DR automation and orchestration Conduct DR testing and recovery validation exercises. Ensure compliance with RTO and RPO requirements. Security & Infrastructure Compliance Secure Linux and UNIX environments following industry best practices. Conduct security assessments, vulnerability reviews, and compliance audits. Identify infrastructure security gaps and drive remediation activities. Implement hardening standards, CIS benchmarks, and security controls. Collaborate with Cyber Security teams on risk mitigation and compliance initiatives. Vulnerability Management & Patching Own enterprise Linux/UNIX patching programs. Coordinate vulnerability scanning and remediation activities. Ensure timely resolution of critical and high-risk findings. Maintain patch compliance and security reporting metrics. Infrastructure Solution Design Lead architecture and infrastructure design initiatives. Develop scalable, resilient, and secure solutions supporting enterprise workloads. Create technical designs, implementation plans, and operational documentation. Participate in technology evaluation, proof-of-concepts, and platform selection. Hardware & Data Center Infrastructure Manage enterprise server hardware platforms including: Dell PowerEdge HPE ProLiant Cisco UCS Oracle SPARC Lead hardware lifecycle management, upgrades, firmware updates, and refresh programs. Coordinate with vendors for troubleshooting and support escalations. Technical Skills Linux Administration (RHEL, Oracle Linux, Ubuntu) Solaris 10/11 Administration SAP S/4HANA Infrastructure Oracle Enterprise Platforms Veritas Cluster Server (VCS) Linux High Availability Clustering VMware / Nutanix / Hyper-V Kubernetes and Docker NAS and SAN Storage NFS, CIFS, Multipathing Disaster Recovery and Replication Technologies Vulnerability Management Tools Infrastructure Automation (Ansible, Python, Shell Scripting) Monitoring and Observability Platforms Enterprise Backup and Recovery Solutions Preferred Certifications Red Hat Certified Engineer (RHCE) Red Hat Certified Architect (RHCA) Oracle Linux Certification Solaris Administration Certification VMware VCP Kubernetes CKA/CKAD Minimum Qualifications Required Qualifications Education Bachelor's degree in Computer Science, Information Technology, Engineering, or related field. Master's degree preferred. Experience 10+ years of Linux/UNIX Administration experience in large global enterprise environments. 5+ years supporting SAP S/4HANA, SAP ECC, Oracle ERP, or similar enterprise platforms. Proven experience supporting global 24x7 production environments. 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 Be aware of potentially fraudulent job postings or suspicious recruiting activity by persons that are currently posing as KLA employees. KLA never asks for any financial compensation to be considered for an interview, to become an employee, or for equipment. Further, KLA does not work with any recruiters or third parties who charge such fees either directly or on behalf of KLA . Please ensure that you have searched KLA’s Careers website for legitimate job postings. KLA follows a recruiting process that involves multiple interviews in person or on video conferencing with our hiring managers. If you are concerned that a communication, an interview, an offer of employment, or that an employee is not legitimate, please send an email to to confirm the person you are communicating with is an employee. We take your privacy very seriously and confidentially handle your information.