Mainframe Administrator
1 week ago
About the Role
We're looking for an experienced Mainframe Administrator to manage, maintain, and optimize enterprise-level mainframe systems that power business-critical applications. This role requires deep technical expertise in IBM Z systems and a proactive approach to performance tuning, security, and automation.
Key Responsibilities- Manage day-to-day operations of mainframe infrastructure (z/OS, JES2/JES3, TSO/ISPF, RACF, etc.)
- Install, configure, and upgrade mainframe system software and related tools
- Monitor system performance, troubleshoot issues, and apply preventive maintenance
- Manage user access, security configurations, and compliance controls
- Implement storage management, job scheduling, and batch processing
- Work closely with application and infrastructure teams to support deployments and system changes
- Perform system backups, DR testing, and ensure high availability across environments
- Prepare documentation for system changes, upgrades, and operational procedures
- Bachelor's degree in Computer Science, Information Technology, or equivalent
- 5+ years of experience in mainframe administration (IBM z/OS environment)
- Solid experience with RACF, JCL, TSO/ISPF, JES2/JES3, SMP/E, VTAM, TCP/IP
- Strong knowledge of storage management (DFSMS, DASD, Tape) and performance monitoring tools (RMF, OMEGAMON, CA-SYSVIEW, etc.)
- Hands-on experience with system tuning, IPL, maintenance, and patch management
- Experience in problem management, incident resolution, and root cause analysis
- Excellent communication and documentation skills
- Experience with Mainframe modernization or migration projects
- Familiarity with automation tools (Rexx, CLIST, JCL scripting)
- Knowledge of z/VM, CICS, or DB2 systems administration
- ITIL or IBM mainframe certifications
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