Hello, BTech is a branch of engineering where you will be application related that is how an technology can be applied to a the working of an object while BE is more of study about the technology itself behind the working of an object. Both BE and BTech tend to have a mix of both of the courses i.e. both the application and how it will be applied. Getting a BTech poses equal opportunities in engineering field as well as in research field. But how much knowledge and skill  you have acquired during your degree  will determine your career prospects.

Best wishes.