Comment by tacostakohashi

A lot of what you talk about is just the bread and butter of software at BigCo, especially at a senior level. Unrealistic expectations, undocumented code, some firefighting, etc. are all just par for the course, and you need to have ways of dealing with that, staying cool and grounded, not letting it get to you, and not letting it stop you from showing some delivered results each week.

Figuring out, details, debugging, etc... yes, these need to happen, but you have to slot those in around delivering things, often without a complete picture.