I have a suspicion an engineer/developer I worked with was secretly working two or more full time jobs. I didn't mention it to our boss as I had no evidence -

I have a suspicion an engineer/developer I worked with was secretly working two or more full time jobs. I didn't mention it to our boss as I had no evidence - only a gut feeling. He was eventually let go anyway after being given far too many second chances to produce any sort of output. He had graduated college and started work just a couple months before everyone went to work from home due to the pandemic, so it was always ambiguous whether he failed to adjust, had crippling social anxiety, or was actually just sandbagging us & doing other things with his time. A couple reasons I thought this was: weird timing of IM replies and un/availability, repeatedly getting caught and warned against using his personal laptop instead of his issued laptop for work (when we were in the office), an impression everything was a game to him, and the aforementioned lack of any output. After he got fired he changed his FB profile to say he worked at a different company in the same general discipline as we do, which could have innocent explanation he was just quickly hired, but maybe that was his other job or one of them. Also weirdly his social media story posts mostly consist(ed) of trading app screenshots showing "line go up" equity gains in 4x leveraged ETFs even during weeks I know the market was doing poorly. Again just a gut feeling but my spidey sense is these app screenshots might be recruitment bait for some kind of scam.