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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mainframe z/OS System Programmer - DP - **Company:** Compu-Vision Consulting Inc. - **Location:** Richmond, VA, United States (Remote available) - **Experience:** Expert - **Contract:** Temporary to permanent - **Skills:** Application Programming Interfaces (APIs), Unix, Customer Information Control System (CICS), CLIST, System Configuration, IBM DB2, Disaster Recovery, IBM Parallel Sysplex, IBM Mainframe, Rexx (Programming Language), Tivoli Management Framework, Interactive System Productivity Facility (ISPF), Job Entry Subsystem 2/3, Job Scheduling, Mainframes, Performance Tuning, IBM Resource Access Control Facility, Release Management, Broadcom, Subsystems, System Programming, System Software, Software Vulnerability Management, Z/OS, Tso/ispf, Enterprise Software Applications, Software Troubleshooting, HybridCloud, Performance Monitor, Api Design, Servicenow, Control M - **Published:** October 11, 2026 - **Apply:** https://www.careerjet.com/jobad/usf509649b286fb93256453a93e89dc8c5 ## About the Role * 5+ years of experience in mainframe system programming with IBM z/OS. * Strong hands-on knowledge of z/OS, JES2/JES3, TSO/ISPF, SDSF, USS/OMVS, and SMP/E. * Experience supporting large-scale mainframe environments, including multiple LPARs and Parallel Sysplex. * Knowledge of mainframe software and vendor products from IBM, Broadcom, and BMC. * Strong troubleshooting, problem determination, and root cause analysis skills. * Understanding of system maintenance, performance tuning, capacity planning, and security administration. * Ability to support production environments and participate in scheduled maintenance activities. Preferred Qualifications * IBM mainframe certifications are preferred but not mandatory. * Exposure to mainframe modernization initiatives, including APIs and hybrid cloud integration. * Experience with z/OS Management Facility (z/OSMF) and modern mainframe interfaces. * Knowledge of mainframe DevOps practices and CI/CD pipelines. * Familiarity with Zowe and API-based integration on z/OS. ## Description We are seeking an experienced Mainframe z/OS System Programmer to install, customize, maintain, and optimize IBM z/OS operating systems and associated system software. The ideal candidate will ensure the stability, performance, security, and availability of mission-critical mainframe environments supporting large-scale enterprise applications., 1. System Administration and Maintenance * Install, configure, customize, and maintain IBM z/OS operating systems. * Perform system upgrades, migrations, and maintenance activities, including PTFs, APARs, and RSUs. * Manage Initial Program Load (IPL) processes, system initialization, and configurations involving PARMLIB, PROCLIB, and SYS1 datasets. * Monitor system health and performance using tools such as RMF, SMF, and SDSF. 2. Subsystem Support and Integration * Install, configure, and support key mainframe subsystems, including: * JES2/JES3 * TSO/E and ISPF * UNIX System Services (USS) * RACF, in coordination with security teams * Collaborate with DB2, CICS, IMS, MQ, and storage teams to support subsystem integration and resolve technical issues. 3. Performance and Capacity Management * Analyze system performance metrics and implement tuning improvements. * Support capacity planning and resource optimization across CPU, memory, and I/O. * Evaluate hardware capacity requirements and upgrades, including CPU/MIPS growth and IBM Z platform enhancements. * Identify opportunities to improve system efficiency, availability, and performance. 4. Problem Management and Troubleshooting * Diagnose and resolve system-related issues, including system abends, failures, and performance degradation. * Perform root cause analysis for outages and major incidents. * Coordinate with IBM and other software vendors to investigate technical issues and implement fixes. * Support problem management activities to minimize recurring incidents and service disruptions. 5. Automation and Job Scheduling * Develop and maintain automation solutions using System REXX and CLIST. * Support automation tools such as System Automation for z/OS (SA z/OS) and NetView. * Work with job scheduling tools such as CA-7 and Control-M, where applicable. * Identify opportunities to automate routine system administration and maintenance activities. 6. Security and Compliance * Support system-level security configurations aligned with RACF policies. * Ensure compliance with enterprise security standards, regulatory requirements, and audit controls. * Assist with vulnerability remediation, system patching, and security maintenance. * Collaborate with security teams to maintain a secure and compliant mainframe environment. 7. Change and Release Management * Execute system changes according to ITIL-based change management processes using ServiceNow or equivalent tools. * Prepare implementation plans, backout procedures, and post-implementation validation steps. * Participate in scheduled maintenance windows, including weekend maintenance and IPL activities. * Ensure changes are properly documented, tested, and implemented with minimal operational disruption. 8. Documentation and Disaster Recovery * Create and maintain technical documentation covering system configurations and operational procedures. * Develop and update Standard Operating Procedures (SOPs). * Maintain disaster recovery documentation and support recovery planning and testing. * Ensure system maintenance activities and configuration changes are accurately documented.