[jsgoller1]

> I've been fired from my last two positions without any warning or prior notice

This feels more like the exception than the rule - especially if they are willing to spend a whole day denigrating you. Obviously, I don't have the same context as you on this, but I have never seen someone get let go suddenly for poor technical performance.

[throwawayjay]

True, it is more of an exception based on the majority of other cases that I have heard as well. PIPs and/or warnings are usually issued first. The one commonality between the two companies is that they were very small (3-5 developers).