I have found that the attitude of "just silently do the robust and proper thing immediately and push it, instead of letting the entire team discuss this important infrastructure topic forever in order to ultimately come up with an abomination of design-by-committee-architecture, just to then find out that the remaining time now is way too short to implement it, which is why they then take all the stupid shortcuts to get it done in time, ending up with something barely holding together with duct tape that somehow works for the moment, but immediately tumbles down as soon as the next guy tries to build the next layer on top of it" is a very important senior dev skill, especially at the beginning of new projects when a lot of basic building blocks on which the more complex features have to rest later are still being created.