I was expecting the comment section to be negative about this, but not nearly unanimously so. I'll be contrary and say that in my last two jobs as a senior soft

I was expecting the comment section to be negative about this, but not nearly unanimously so. I'll be contrary and say that in my last two jobs as a senior software eng, I've given six weeks notice and it's worked out very nicely. I was not just shown the door immediately, I got a chance to get closure on some projects, and have a number of knowledge dump sessions that I hope were helpful to people. I think my collaborators appreciated the longer notice, but of course it's difficult to say. The way I did it was to give my manager six weeks notice, then tell my close collaborators at four weeks, most everyone else I worked with at two weeks and then sent a "this is my last week" email. Still, six weeks seems like an outer edge to me—I can't think of any good reason to give three months notice. The primary downside is that it is not really compatible with taking time off between jobs. Most places are reluctant to give you an offer for a start date more than a month out.