Help, can we use "Engr." title in our name?

Hello! I'm a fresh graduate in Computer Engineering. Ever since I graduated, this question has been on my mind: pwede ba talaga nating gamitin ang title na 'Engr.' sa pangalan natin? May professor kasi kami noon na minaliit ang Computer Engineering dahil wala raw tayong board exam—tinawag pa nga kaming 'peke' na engineer. Kaya hanggang ngayon, napapaisip pa rin ako.