Vantaggi
There are some very talented people and couple of executives who know what they are doing. CEO himself is smart, knows how to run business and how to grow ecosystem. Company is stable and if you like, you could work there forever while delivering mediocre results. Impossible to get fired. Situation in company is generally better than a couple of years ago. If you are working in big department, you will learn quickly and learn a lot.
Svantaggi
Unfortunately this company does not care about their employees. Turnover rate is high and after every 6 months (after evaluation) a lot of people will leave. Instead of fixing problems, HR is trying to brainwash their employees. 'Asakai' which is a propaganda event in company is mandatory for everyone. If you are not joining, you will get punished. Most of managers and some executives joined as new grads and were promoted to their current stage. They have no idea how to run business or their organization. They have no idea about leadership or how to motivate their employees. Culture is toxic and internal politics is stopping a lot of projects to be delivered in time. It is not rare when whole project is postponed and 'Partner staffs' laid off due to internal politics. Tech wise, company has a lot of legacy systems that are difficult to maintain. Troubles happen often and usually engineers (not managers) will get blamed.