A really simple piece of career advice is to never complain about anything related to work in front of your coworkers
Doesn't matter if it is a buddy you really trust or late night when it's just the juniors in the bullpen
A big part of why you get paid so much is to deal with the bad managers, fake deadlines, and office politics. Like it or not, you should assume these are a part of every job description
Being known as "the guy" who complains about his or her work is never a good thing. Signals that you think only your life is difficult, and undermines the efforts of others. Even if thats not what you mean, people perceive it that way in many cases
Maybe even more importantly, people dont like spending time around others who complain a lot. It will affect your promotions. No one wants to vouch for the person who they dont enjoy spending time around