I spent 20 years coding Assembler and Macro CICS on IBM mainframes, along with some COBOL and JCL and the rest of the mainframe toolbox. I still list it on my resume and I’ve noticed an uptick in hits on that skill set in the last couple of years. I’ve also noticed that these “desperate” IT departments are willing to pay a whopping $40 an hour for mainframe talent. So the need obviously isn’t critical yet.
@masm here (unisys extended mod assembler).
Those were the days, when wasting a single instruction, or blowing your pipeline cache, were considered heretical actions.