The Belong survey was done with ITES companies with over 50 employees and the data was collected from around three lakh women.
This reinforces the assumption that science, technology, engineering, and math (STEM) jobs attract less women, the survey added.
After analysing the career trajectories of techies, who moved into managerial positions and data, the survey found that the transition of men on an average to managerial positions is usually after six years of experience while women move to these roles after eight years of experience.
Further, the survey has revealed that as many as 45 per cent of women move out of core engineering roles after close to eight years.
After quitting engineering, these women mostly move to marketing, product management or consulting, it added.
It said, among the tech talent in India, there are more women in software testing roles (a less sought after skill) compared to core programming roles.
This is the case even though the absolute number of jobs in software testing are significantly less than programming, it added.
Belong survey also revealed that for every 100 testing jobs, there were 34 women compared to 66 men.
When it came to hardcore programming roles, the ratio changed to 25:75, it added.
The survey found that if 29 per cent women start working in a given year, the percentage drops to a dismal 7 per cent after 12 years.
The biggest drop-off in pure numbers is after the first five years, it said.
One of the major reasons for this is that women often take a break to start a family around this time in their lives, and many do not return to the workforce, it said.
Read: 49.5 Per Cent Women In Mechanical Engineering At MIT; What India Can Learn
There have been initiatives by many big companies to tap these lost talents and 'bring back' these women, it said.
From leadership development programmes and special incentives to refer women candidates, Indian IT companies are using innovative techniques to hire and retain tech talent of the opposite gender, it added.
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(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)