{"schemaVersion":"jobsearcher.job.v1","id":"f7fdb24c424a0559cf6601eb","url":"https://jobsearcher.com/jobs/f7fdb24c424a0559cf6601eb","canonicalUrl":"https://jobsearcher.com/jobs/f7fdb24c424a0559cf6601eb","title":"Mainframe ZOS System Programmer","description":"Job Title: Mainframe ZOS System Programmer\nLocation: Phoenix, AZ\n\nThe Mainframe z/OS System Programmer is responsible for the installation, customization, maintenance, and optimization of IBM z/OS operating systems and associated system software. This role ensures the stability, performance, security, and availability of mission-critical mainframe environments, supporting large-scale enterprise applications.\nThis role requires employees to live in or around the Phoenix, AZ area. You will be responsible to be onsite 3 days a week. We will consider candidates who are willing to relocate to the area.\nResponsibilities:\nSystem Administration & Maintenance:\nInstall, configure, and maintain IBM z/OS operating systems.\nPerform system upgrades, migrations (e.g., z/OS version upgrades), and apply maintenance (PTFs, APARs, RSUs).\nManage IPL processes, system initialization, and configuration (PARMLIB, PROCLIB, SYS1 datasets).\nMonitor system health and performance using tools such as RMF, SMF, SDSF.\nSubsystem Support:\nInstall, configure, and support key subsystems:\nJES2/JES3\nTSO/E, ISPF\nUSS (Unix System Services)\nRACF (in coordination with security teams)\nWork closely with DB2, CICS, IMS, MQ, and Storage teams for integration and support.\nPerformance & Capacity Management:\nAnalyze system performance metrics and implement tuning improvements.\nSupport capacity planning and resource optimization (CPU, memory, I/O).\nEvaluate hardware upgrades (e.g., CPU/MIPS growth, z-series enhancements).\nProblem Management & Troubleshooting:\nDiagnose and resolve system-related issues, including system abends and failures.\nPerform root cause analysis for outages and major incidents.\nWork with IBM and vendors on problem determination and fixes.\nAutomation & Scheduling:\nDevelop and maintain automation using tools such as:\nSystem REXX, CLIST\nSA z/OS, NetView\nSupport job scheduling tools (e.g., CA7, Control-M where applicable).\nSecurity & Compliance:\nSupport system-level security configurations aligned with RACF policies.\nEnsure compliance with audit, regulatory, and enterprise security standards.\nAssist in vulnerability remediation and patching activities.\nChange & Release Management:\nExecute changes through ITIL-based processes (ServiceNow or equivalent).\nPrepare implementation plans, backout procedures, and validation steps.\nSupport weekend maintenance windows and IPL activities.\nDocumentation:\nCreate and maintain technical documentation, including:\nSystem configurations\nStandard Operating Procedures (SOPs)\nDisaster Recovery plans","company":"Delan Associates","rawCompany":"delan associates","city":"Phoenix","state":"AZ","isRemote":false,"isActive":false,"createdAt":"2026-08-06T16:57:52.104Z","occupations":[{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1244.00","title":"Network and Computer Systems Administrators","slug":"network-and-computer-systems-administrators"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"541519","title":"Other Computer Related Services","slug":"other-computer-related-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Mainframe ZOS System Programmer","description":"Job Title: Mainframe ZOS System Programmer\nLocation: Phoenix, AZ\n\nThe Mainframe z/OS System Programmer is responsible for the installation, customization, maintenance, and optimization of IBM z/OS operating systems and associated system software. This role ensures the stability, performance, security, and availability of mission-critical mainframe environments, supporting large-scale enterprise applications.\nThis role requires employees to live in or around the Phoenix, AZ area. You will be responsible to be onsite 3 days a week. We will consider candidates who are willing to relocate to the area.\nResponsibilities:\nSystem Administration & Maintenance:\nInstall, configure, and maintain IBM z/OS operating systems.\nPerform system upgrades, migrations (e.g., z/OS version upgrades), and apply maintenance (PTFs, APARs, RSUs).\nManage IPL processes, system initialization, and configuration (PARMLIB, PROCLIB, SYS1 datasets).\nMonitor system health and performance using tools such as RMF, SMF, SDSF.\nSubsystem Support:\nInstall, configure, and support key subsystems:\nJES2/JES3\nTSO/E, ISPF\nUSS (Unix System Services)\nRACF (in coordination with security teams)\nWork closely with DB2, CICS, IMS, MQ, and Storage teams for integration and support.\nPerformance & Capacity Management:\nAnalyze system performance metrics and implement tuning improvements.\nSupport capacity planning and resource optimization (CPU, memory, I/O).\nEvaluate hardware upgrades (e.g., CPU/MIPS growth, z-series enhancements).\nProblem Management & Troubleshooting:\nDiagnose and resolve system-related issues, including system abends and failures.\nPerform root cause analysis for outages and major incidents.\nWork with IBM and vendors on problem determination and fixes.\nAutomation & Scheduling:\nDevelop and maintain automation using tools such as:\nSystem REXX, CLIST\nSA z/OS, NetView\nSupport job scheduling tools (e.g., CA7, Control-M where applicable).\nSecurity & Compliance:\nSupport system-level security configurations aligned with RACF policies.\nEnsure compliance with audit, regulatory, and enterprise security standards.\nAssist in vulnerability remediation and patching activities.\nChange & Release Management:\nExecute changes through ITIL-based processes (ServiceNow or equivalent).\nPrepare implementation plans, backout procedures, and validation steps.\nSupport weekend maintenance windows and IPL activities.\nDocumentation:\nCreate and maintain technical documentation, including:\nSystem configurations\nStandard Operating Procedures (SOPs)\nDisaster Recovery plans","datePosted":"2026-08-06T16:57:52.104Z","dateModified":"2026-08-06T16:57:52.104Z","hiringOrganization":{"@type":"Organization","name":"Delan Associates","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Phoenix","addressRegion":"AZ","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"f7fdb24c424a0559cf6601eb"},"url":"https://jobsearcher.com/jobs/f7fdb24c424a0559cf6601eb"}}