Greetings!

Doing Btech at any age is always fruitful but most important is that you must have the skills. If you become a good programmer and develop abilities to solve rela life problem then many MNCs like Microsoft, Amazon will hire you. Age is never a restriction in top company. If you would not be satisfied with btech degree then you can pursue further education also. The country requires good coders presently as well as in future also. The company may not reach to you directly but you can apply at their platform after or during the course.

Hope this will help you.