You should always have other options. You shouldn’t wait until you’re about to be laid off. I can honestly say there isn’t a single day since 2008 (I’ve been working a lot longer) that if the company I was working for laid me off that I wouldn’t be prepared to look for another job the same day.

That means an updated resume, career document of accomplishments and talking points, an active network and “fuck you money” in the bank. If you live in any major city in the US, and are a software developer with experience, you should be making in the upper quintile of income for your area. There is usually no excuse not to have savings.