Learning Japanese would help me to make my career as bilingual?  

I think so, Japanese is quite easy language to start with. You can be bilingual in private company, government, etc....

Personally I think, Japanese is easy to start with, while hard to master at the end,compared with Chinese. however, it is hard to learn japanese grammar, for there is no Japanese grammar originally. Though Japan, Korea and China are Asia countries, and China culture has a great influence on Japanese culture and Korean culture, there are giant difference among this three countries. You can not understand Chinese if you just learned Japanese. However, if you master Chinese well, you can read Japanese newspaper with a comprehension over 60%, for Japanese using Chinese character.

I'm learning Japanese and I had Indian classmates before and all of them quit within a few lessons. I think Asian languages like Japanese, Chinese and Korean are not easy for Indians as pronunciation can be quite a challenge. I learned Spanish before and had Indian classmates and they learned the language very fast. Perhaps you should pick up a European language like Spanish or Italian.