In first round there was an aptitude test. Technical interview in second round and HR interview in third round. In aptitude test most of the questions asked were on c language. I think this company selects very few candidates.

DeltaX has a 3 round hiring process in which 1st was technical and aptitude with moderate difficulty 2nd was coding round having 5 questions in which 2 easy questions 2 moderate level questions and 1 hard question. And 3rd round was technical interview.