What does a mainframe systems analyst do?

A Mainframe Systems Analyst is responsible for analyzing, designing, and maintaining mainframe computer systems used by large organizations for critical business operations. Their duties often include troubleshooting system issues, ensuring system security and efficiency, implementing upgrades, and supporting application development teams. They work with technologies like IBM z/OS, COBOL, and JCL, and collaborate with various IT and business staff to ensure the mainframe environment meets organizational needs. Mainframe Systems Analysts play a key role in keeping legacy systems reliable and up to date.