First, you have to complete your B.tech.
B.Tech graduates can join Indian Air Force as Flying Officer in Flying Branch and Aeronautical Engineer in Technical Branch. Combined Defence Services Examination (CDSE), Flying (Pilot) Short Service Commission and National Cadet Corps Special Entry are three modes through which B.Tech graduates can join Flying Branch. Direct Entry Scheme and University Entry Scheme (UES) are two entry options available for aspirants to join the Technical Branch in Indian Air Force.