Cut Throat Nature - TLA is a hive of political machinations, plotting and backstabbing. As a TLA employee you will have all the job security of a snowman in a Swedish sauna. During my time at TLA I saw a parade of dedicated and long term employees being lined up for "redundancy" - often with the victim being the only person who didn't know the axe was about to fall. In particular I was disgusted by the treatment of a junior developer being brought in, given no real work or support to speak of and then being cast out. The real piece de resistance however was a long term, dedicated and talented employee who was bundled out just weeks after returning from parental leave. You stay classy, TLA.
Technical Leadership - I use the words "Technical" and "Leadership" only in the loosest possible sense. First the technical; the tech leadership at TLA has worked only at TLA. This isn't necessarily a problem, but if that's what you're going to do I would expect you to have a keen interest in what goes on elsewhere, so that you can learn and grow. Nope - if it wasn't invented in TLA, its of no interest to anyone. Generally speaking the systems are very poor, and there seems to be no interest in improving that.
The technical acumen however is positively Einsteinian compared to the leadership skills. I've never seen technical leadership so clearly out of their depth. That would be forgivable if it was coupled with a willingness to learn and cooperate. It is not. Blame is cast around daily. Everyone is trashed behind their backs. Goalposts are moved. Promises are made and rowed back on. Any hint of success is perceived as a threat to be eliminated.
Lack Of Trust - I guess if you've read this far then this comes as no surprise, but serious professionals are treated like potential thieves. You will be monitored. God forbid you get ill and have to take a day to recover.
Questionable Hiring Practices - I won't say much here but I will say that the phrase "just not a good cultural fit" was heard way more often than I'd like.
In general I'd advise anyone to think extremely carefully before applying for a role at TLA, but if you do then make sure you speak entirely uncritically about AI - its practically a religion. Ironically the AI adoption is very poor - if you treat it like a productivity tool it has real value, if you treat it as a magic employee replacement then its fairly useless.