Gender gap exists, but what's the solution?!
You can't employ a woman just because she's a woman. If they did, it would be reservation and we all know how great that is in India. /s
More women need to choose to get into stem fields by their own volition, which could be encouraged from a young age.
Meanwhile, and this is only from my personal viewpoint, I had more girls than guys in IT engineering. Yet after getting a job, they either left it for marriage or got married and chose to leave their jobs. I feel the problem is for men in India, being in a job and earning is a necessity whereas for women it's a choice, the ones who break this and proceed do extremely well.