A low-level computer operator or systems administrator. So named for one of the customary duties of such a position, which was to start backups manually from the command line, switch tapes as needed, and monitor the backup for successful completion.
Storage Area Networks, RAID arrays, tape jukeboxes, and the like have largely rendered such jobs obsolete.
"I started out as a third-shift tape ape because I knew a few Unix commands and could use a shell prompt. Taught myself systems administration and programming while watching the tapes spin and now I'm a software developer."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.