Both B.Tech in CS and MCA are good courses and provide huge employment opportunities to the students.

As you have completed BCA, I would suggest you to do MCA, is it very much relevant to your subjects, and you will get masters degree, whereas B. tech is a bachelor degree course. After completing MCA you can get following types of the job options:

Chief Information Officer

Computer Presentation Specialist

Software Publisher

Commercial and Industrial Designer

Consultant


Computer Systems Analyst

Software Engineer or Programmer

Computer Support Service Specialist

Software Developer

Database Administrator

Computer Scientist

Junior Programmer

Information Systems Manager

Project Leader

Systems Administrator