Hello dear student !

There are so many options which you can choose after B Tech . That completely depends on your interest and what you are willing to do at this point of time in life. If you want to do job , then you can do it. There are so many companies which offer jobs for B Tech degree holders. If you want to study more , then there are many courses which you can choose for further studies. You can pursue M Tech and MS or MBA.  The specialization which you can choose that completely depends on your interest such as you can do it in electrical engineering, civil engineering , mechanical engineering , computer sciences, etc. All of these are good courses which you can select as per your interest and capabilities.

Hope this will help you