Pros: I had many opportunities to meet people. Some became close friends.

Cons: Some cultures lead to low productivity. For example, company-wide weekly meetings used to be held every Monday before work hours, and attendance was checked.

Pros: Good technical knowledge, lots of room to do proof of concept.

Cons: Lots of politics. Lots of rules and process.

Pros: Not the center of Tokyo, so if you are living in Kanagawa, it's easier to access. Being a contract employee, I'm not required to attend what full-time employees dread to attend: asakai. Free lunch. We have lots of members in our team, so the tasks are all divided into easier tasks. (Some noobs and lazy workers just pretend they're working, and they're still working there. Such a bad sight.) If you're an incompetent worker, you might fit in working here. Just talk like an intelligent person, and your coworkers will think you're smart (but your code is bad).

Cons: It's like going to school. There is some stupid peer pressure, and I think they don't accept much individuality here. I don't think it's a good learning place for newbies either. These Dunning-Kruger effect "autists" don't seem to care to teach the people who are incompetent.