You will receive an engineering visa, which is often times valid for 3 years at which point the company will renew your Visa or you can apply for the permanent residency. 

Your family will receive a spousal visa, which allows work until 28 hours per week. If your family decides to work full time, then the relevant company will sponsor the relevant visa. 

The salary depends on the level of experience and how the interviewer perceives your abilities. Indeed.com pays one of the most competitive salaries in Tokyo.

With that being said, the average salary will be 10M to 20M JPY for Software Engineers, Product Manager, other related Individual Contributor positions. For Managers like Engineering Manager, Senior Program Manager, and other managerial roles the average salary will be between 15M to 25M JPY. On top of these salaries there will be stock options. For people who are making higher than this value, the company will be providing heavier stock options.

*M = Million

One reason is because Indeed only hires from top universities and would rather hire the best talent regardless of the location.

Second reason is because of the culture. Indeed is highly multicultural and values diversity. With that being said they prefer people who have experience working in multicultural environment, ideally at one point having lived in English speaking countries. 

 Third reason is that Indeed works in English and it is difficult to find good English-speaking talent in Japan.