Use old and simple technology
The more gear you have in your life, the more time you will spend fixing it.
Most software engineers love technology for its own sake. So they bring it to their lives, and to their software, without considering it as an adult. If it seems cool, let's install it and put it to production.
If you have someone like that in charge, in the long run, you will have so many different things to mantain that you will have no time to create.
Simplicity matters. When building something new, use old and simple technology.