Tencent

There is a great benefit among all Chinese Internet giants, a fancy building, and nice colleagues and culture.

1. Bad work life balance. For product managers, you have to deal with "product requirements from boss" at off-duty-time. And engineers have to spend a lot of time on those whims even in the deep night.

2. Lack of high-level design on the whole company's tech-infrastructure, so that a lot of engineers are exhausting on re-inventing wheels and on-call for online service fault.

3. Some of the senior/middle managers (VP/GM) are not professional enough. They sometimes focus too much on detailed problems which shall be solved by engineers or product managers themselves.

4. Top-level company and products, second-level salaries.