Senior Systems Programmer — z/VM, zLinux, LinuxONE

Role OverviewWe are seeking a Senior Systems Programmer with deep expertise in IBM Z virtualization and Linux environments. The role is responsible for designing, administering, and optimizing z/VM and Linux on IBM Z (zLinux/LinuxONE) infrastructure to ensure high availability, security, and performance in enterprise environments.Key ResponsibilitiesSystem Administration & EngineeringInstall, configure, and maintain z/VM systems and virtualization environmentsManage Linux on IBM Z (zLinux) distributions (RHEL, SLES, Ubuntu)Provision and manage virtual machines (guests) on z/VMPerform system upgrades, patching, and lifecycle managementPerformance & Capacity ManagementMonitor and tune system performance across CPU, memory, I/OAnalyze system metrics and identify bottlenecksImplement capacity planning strategies for scalable workloadsLinuxONE & Infrastructure ManagementAdminister and support LinuxONE systemsEnsure optimal utilization of LPARs, virtualization layers, and resourcesWork with hybrid cloud and containerized workloads (Docker, Kubernetes)Automation & ScriptingDevelop and maintain automation scripts using REXX, Shell, PythonAutomate provisioning, monitoring, and routine operational tasksSecurity & ComplianceImplement security best practices for z/VM and Linux systemsManage access controls, user authentication, and system hardeningEnsure compliance with enterprise and regulatory standardsTroubleshooting & SupportDiagnose and resolve system-level issues across z/VM and Linux environmentsPerform root cause analysis for incidents and outagesProvide L2/L3 support for production systemsRequired Skills & Experience6–8 years of experience in IBM Z Systems programming / administrationStrong expertise in:z/VM installation, configuration, and administrationLinux on IBM Z (zLinux) environmentsLinuxONE architecture and operationsHands-on experience with:Virtualization concepts (LPARs, z/VM guests)Linux distributions: RHEL / SLES / Ubuntu on IBM ZProficiency in scripting:REXX, Shell scripting, PythonKnowledge of:TCP/IP networking on IBM ZStorage concepts (DASD, SAN)System monitoring and performance tuning

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