Comment by Simon_ORourke

Example - about 2005 I was a junior dev thinking I was about to make the cut to senior within the year, in a medium sized IT company. Let it slip accidentally to my boss that I used to install servers in racks in a previous role. Ended up being shoved into a "lateral move" into the systems engineering team because they couldn't hire quickly enough. Fast forward another six months and I get laid off after a migration to the cloud makes my team redundant. Expensive lesson, but lesson learned.