Hello,
Interior designing has become a popular specializations in india . In the recent times, people are becoming conscious about the designing of their living and working spaces. This new focus has considerably improved the scope for interior designers in India.
When it comes to government jobs in interior designing, candidates can find job opportunities in regional and metropolitan regional development department, town planning bureaus and public works departments since these professionals are appointed by these departments for effective completion of projects.
Apart from this,  Fresh graduates from interior designing course can find employment opportunities in resorts, hotels, building construction companies and architectural firms.
talking about the salary then fresh graduates can expect a pay somewhere between 5000 to 25000. It increases as the experience increases.
Hope this helps
Good luck