Role Summary
We are seeking a senior Mainframe Security Administrator to secure and administer our IBM z/OS environment using RACF. You will own the RACF database, manage digital certificates, support auditing and compliance, and ensure security is configured correctly across a Parallel Sysplex environment.
Key Responsibilities
- Administer RACF users, groups, and resource profiles, and maintain resource access lists
- Manage the RACF database: backup databases, database housekeeping, and monitoring of usable database space.
- Run and interpret RACF utilities for database initialization, split/merge/extend, unload, and verification.
- Plan and execute database changes, such as switching to a backup database, with controls to prevent corruption from incorrect database sharing.
- Provide 2nd/3rd-level support for z/OS security incidents and access issues.
- Work with systems programmers, application teams, and security/GRC teams.
- Create and maintain procedures, runbooks, and documentation.
Mandatory Skills
- IBM z/OS: deep, hands-on knowledge of the operating system
- Parallel Sysplex: working knowledge of Parallel Sysplex concepts.
- RACF: strong knowledge of RACF concepts and administration, including RACF database management.
- RACF digital certificates: hands-on experience with RACDCERT.
- RACF auditing: hands-on experience.
- 8+ years of relevant mainframe security administration experience.
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Mainframe Security Administrator in Melbourne employer: Cognizant
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