I want to complete my B.Tech. What possible options are available for a working professional?

Hello Syed, It's indeed very gratifying to know your desire to go for graduation. You have two major options. Firstly you should do AMIE This is equivalent to graduation in all respects. In another way, you can think of doing graduation via distance education offered by IGNOU, a statutory university

That was 22 years ago. I would suggest trying some local engineering colleges for admission. Or else, try IGNOU for B.Tech in Civil Engineering. It is a valid course and can be pursued in distance mode.