Mainframe z/OS support Responsibilities:

System Administration:

Install, configure, and maintain z/OS systems and subsystems.

Monitor system performance and troubleshoot any issues.

Manage system resources such as memory, storage, and CPU utilization.

Perform backups and recoveries as needed.

RACF Administration:

Define and manage user profiles, groups, and permissions in RACF.

Implement security best practices to protect z/OS resources.

Audit and monitor security activity within the z/OS environment.

Stay up-to-date on the latest RACF security updates and vulnerabilities.

Automation:

Develop and implement automation scripts to automate routine z/OS tasks.

Utilize tools like JCL, REXX, or shell scripts to streamline processes.

Work with developers to integrate automation with existing applications.

Problem Resolution:

Diagnose and troubleshoot problems related to z/OS systems, RACF, and automation.

Work effectively with other IT teams to resolve complex issues.

Document solutions and implement preventative measures to avoid future issues.

Reporting:

Generate reports on system performance, resource utilization, and security activity.

Analyze reports and identify areas for improvement.

Qualifications:

Minimum 3-5 years of experience administering z/OS systems

Strong understanding of z/OS concepts, including JCL, ISPF, and system utilities

Proven experience with RACF administration and security best practices

Experience with automation scripting languages like JCL, REXX, or shell scripting

Excellent problem-solving and analytical skills

Strong communication and collaboration skills

Ability to work independently and as part of a team

Preferred Skills:

Experience with z/OS workload automation tools

Knowledge of z/OS security best practices