Position Overview:

We are seeking an experienced Senior z/OS Systems Administrator to support and maintain a large-scale IBM mainframe environment.

The ideal candidate will be a senior-level z/OS qualified with deep hands-on expertise in SMP/E, REXX scripting, and z/OSMF, along with strong knowledge of z/OS systems administration, maintenance, upgrades, troubleshooting, and automation.

This position requires an individual who can work independently, troubleshoot complex mainframe system issues, perform system-level maintenance and upgrades, and develop automation to improve the reliability and efficiency of the z/OS environment.

Key Responsibilities:

- Install, configure, maintain, and support IBM z/OS operating systems and related system software.
- Perform z/OS upgrades, maintenance, system modifications, and lifecycle management.
- Provide advanced administration and troubleshooting of z/OS environments.
- Use SMP/E (System Modification Program/Extended) extensively for installation, maintenance, upgrades, PTFs, APARs, HOLDDATA processing, and management of IBM and third-party software.
- Analyze SMP/E environments, zones, CSI datasets, SYSMODs, and maintenance requirements.
- Develop and maintain REXX scripts to automate z/OS administration, monitoring, reporting, maintenance, and operational processes.
- Identify manual processes that can be improved through REXX-based automation.
- Administer and support IBM z/OS Management Facility (z/OSMF).
- Configure and maintain z/OSMF services, workflows, plugins, and system management functions.
- Utilize z/OSMF for system management, configuration, monitoring, and automation.
- Perform system problem determination, root-cause analysis,



and resolution of complex z/OS issues.
- Monitor system performance, availability, capacity, and overall system health.
- Work with operations, application, storage, network, security, and database teams to resolve mainframe infrastructure issues.
- Participate in system upgrades, migrations, disaster recovery testing, and infrastructure modernization initiatives.
- Maintain system documentation, operating procedures, configuration standards, and technical runbooks.
- Provide technical leadership and mentoring to other mainframe systems administrators.
- Participate in production support and on-call activities as required.

Required Qualifications :

- 10+ years of hands-on SMP/E experience in enterprise IBM z/OS environments.
- 10+ years of hands-on REXX scripting experience, including development of automation for systems administration and operational tasks.
- Strong hands-on experience with IBM z/OSMF (z/OS Management Facility).
- Extensive experience administering and supporting IBM z/OS in large enterprise environments.
- Strong knowledge of z/OS system architecture, configuration, maintenance, and troubleshooting.
- Experience installing and maintaining IBM and third-party mainframe software.
- Extensive experience applying PTFs, APARs, maintenance packages, and software upgrades using SMP/E.




- Strong understanding of SMP/E CSI structures, zones, SYSMOD processing, HOLDDATA, RECEIVE, APPLY, ACCEPT, and RESTORE processes.
- Strong knowledge of JCL, TSO/ISPF, UNIX System Services (USS), and z/OS utilities.
- Ability to diagnose complex system problems using z/OS logs, dumps, system messages, and diagnostic tools.
- Strong understanding of mainframe change-management and production-control processes.
- Excellent analytical, troubleshooting, documentation, and communication skills.
- Ability to work independently and take ownership of complex technical issues.

Preferred Skills:

- Experience with several of the following would be highly desirable:
- JES2
- RACF
- TCP/IP
- UNIX System Services (USS)
- HMC
- IBM System z / IBM Z hardware

7.

Parallel

Sysplex

8.

Coupling

Facility

- WLM
- RMF / SMF

11.

System

Automation

- SDSF
- DFSMS

14.

Disaster

Recovery / Business Continuity

- Mainframe monitoring and performance-management tools
- Automation using REXX, JCL, CLISTs, and other scripting technologies

Ideal Candidate:

- The successful candidate will be a senior-level z/OS systems professional who is comfortable taking ownership of a complex enterprise mainframe environment.
- This individual should have particularly deep expertise in SMP/E and REXX, with at least 10 years of hands-on experience in each, and strong practical experience administering and utilizing z/OSMF.
- The candidate should be capable of working with minimal supervision, leading complex system maintenance and upgrade activities, automating repetitive administrative functions, and serving as a technical escalation point for z/OS-related issues.

📌 Senior z/OS Systems Administrator (India)
🏢 Prodcon Tech Services
📍 India