indian engineering service  consists of a select base of engineers working under the GOI (Government of India).  as per my perfection u have to go through electronic engineering as u can futher go through indian railway service of electrical engineering

Hello Ankur

See, at first you can apply for IES in both the cases but Yes you can apply for IES exam, but the Exam is not for the computer graduates.

So you can apply in any of the fields like

mechanical

electrical

civil

electronics and telecommunication

So, it's better to choose ECE.