Mainframe Administrator
On-site · Prague, Prague, Czechia
Job Summary
Own and maintain the z/OS platform, including installation, configuration, and SMP/E maintenance to ensure availability and integrity. Build and standardize environments using ADCD and z/PDT across DEV, QA, and UAT. Manage core subsystems (Db2 for z/OS, IMS), including configuration, upgrades, and issue resolution. Administer key system components including storage (DASD), datasets, and network services (TCP/IP, VTAM, FTP, SSH). Design and manage security using RACF, Top Secret, or ACF2, ensuring proper access control and compliance. Own catalog and alias management, maintaining consistency and resolving allocation and resolution issues. Design and execute backup, restore, and recovery processes, and troubleshoot system and environment-level issues. We are primarily an in-office environment and therefore, you will be expected to work from the Prague office in compliance with Everpure's policies, unless you are on PTO, or work travel, or other approved leave.
Required Qualifications
- Strong hands-on experience with z/OS system programming and SMP/E
- Experience working with ADCD and z/PDT environments
- Expertise in datasets (VSAM, QSAM, PS/E, PDS/E, UNIX) and DASD/storage management
- Experience with External Security Managers (RACF, Top Secret, or ACF2)
- Practical experience with Db2 for z/OS and IMS
- Strong troubleshooting and root-cause analysis skills across system and subsystem layers
- Ability to work cross-functionally with developers and customers to support platform usage and issue resolution
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