Madhusudhan, allegedly murdered his wife, also a software engineer, following a quarrel late last night, in J P Nagar, DCP (South) Revanna told reporters.
Their six-year-old daughter was at her grandparents house in the same locality.
In a fit of rage, Madhusudhan took out a knife and stabbed his wife all over the body and then wanted to end his life by hanging from the ceiling fan, but failed as the rope broke, Revanna said.
Thereafter, he tried to set himself ablaze with kerosene, but that also failed as he was unable to find a match-stick and ultimately he jumped to death from their 13th floor flat, he said.
When the incident took place, their six-year-old daughter was at her grandparents house in the same locality, Revanna said.