Pros
My colleagues were extremely dedicated and hard-working, intelligent, ready to take on new challenges, and with an eye for constant improvement of the engine. The computers we used were relatively new: the engineers were getting Apple M1s or M2s and the linguists were getting Apple M1s or Intels. Almost everyone at the office had a desk with enough space for a huge monitor, keyboard, mouse, and personal stuff. They were paying for the flights to and from Korea.
Cons
Being a startup, the company never offered stock options. The managers didn't seem to understand the big problems within the company and they always forced everyone to soldier on with the little things, without attempting to fix the underlying big picture issues. The managers were not competent enough in their domain, oftentimes making blatant and unacceptable mistakes, meaning that the senior employees had more experience and more vision than them. This lead to MANY senior employees to leave the company. The managers were ageists. The managers rarely appreciated hard effort and working overtime. The work environment promoted by the managers was extremely toxic. Overtime was never paid. The salaries were under the industry level in Korea/Japan/USA.