What does a mainframe programmer do?

Career: Mainframe Programming

A mainframe programmer writes, tests, and maintains software for large-scale mainframe computers, often using languages like COBOL, PL/I, or Assembler. They work on critical business applications, ensure system stability, and may use tools like JCL and DB2, often requiring knowledge of mainframe environments and certifications. Their role involves troubleshooting, optimizing performance, and supporting enterprise operations.