Hindi, which is official language of India, but spoken and understood all over the world, can bring you good career opportunities. What you have to do is polish your language skills in different fields like medical, legal, financial and general. Medical field is different from legal field because each field has its own terminology and meaning.
Understanding each field not only needs deep knowledge but having some interest especially when you are living in India where Hindi is not considered to be a good career option for new generation. Along with Hindi, you should learn one international language; for example, Spanish, German, French, Chinese, Arabic etc.
Foreign companies interested in doing business with Indian companies always need linguists or translators for their documents. Very few people have the ability to translate a foreign language into Hindi. However, there is no dearth of English to Hindi translators. Therefore, if you think that you have good knowledge of English, it will not work at all.
If you know a foreign language and want to make a career in Hindi document translation, forward your resume to a translation agency.