AME (Aircraft Maintenance Engineering) is a technical training course (3 years long) that will help you acquire an aircraft maintenance engineer license (issued by the DGCA).
AME training course is 3 years long. Academic program is 2 years long. 6 months are dedicated towards on job training program. The entire program is divided into 6 semesters, with each semester lasting for a period of 6 months.
Students who have passed10+2 Science stream (with Physics, Chemistry and Mathematics subjects) with minimum 50% aggregate marks are eligible to pursue this course. Diploma holders (with minimum 50% aggregate marks) are also eligible to pursue it.
Some of the institutes follow direct admission process. Some other institutes follow merit based admission process. Usually, Diploma holders are given direct admission. In case of merit admission, marks scored by a student in 10+2 board exam and entrance test are taken into consideration. Many institutes also have a selection interview.

Aircraft maintenance engineers deal with inspection, maintenance and servicing of aircraft. Licensed AME professionals are usually hired by Government Airline as well as Private Airlines. Aviation Organizations, Aircraft maintenance firms and Flying Schools are also known to recruit them.

Hope this helps.
All the Best.