They flat out lie during the negotiation process. You get asked to sit in a room for a "couple of minutes". Ends up being more like 30. You get there, the pe

They flat out lie during the negotiation process. You get asked to sit in a room for a "couple of minutes". Ends up being more like 30. You get there, the people you're supposed to talk to "aren't available", they have some other random underlings talk to to keep you busy. You're talking to them, they act bored or distracted. They play with their phones, take calls. They whiteboard you clearly without any preparation. Sometimes pulling a problem more or less out of their ass (logically incoherent and/or mathematically intractable). They give you lengthy take-home problems, which would clearly take 4x as long to do in an actual work environment. And surprise, they don't set up the environment right, or the data you're supposed to go fetch just isn't there anymore (or has changed), or the requirements are just plain incoherent. Oh and then they ghost you.