Hi Harini,
From what I know, headhunting is a significant business in India. Individuals in top positions often avoid posting their CVs online or on other platforms. The primary way to recruit top executives for high-level vacancies is through headhunters.
One of the leading headhunting firms in the world, with offices in Gurgaon and Mumbai, is Amrop Hever. You can find more information at [Amrop Hever's website](http://www.amrophever.com/).
According to an article from [Hindustan Times](http://hindustantimes.com), Amrop International specializes in executive and non-executive director search, as well as management audit and governance advice. They are a founding member of the Amrop Hever Group, a global network operating in 51 countries with 83 offices. The firm in India has gained a strong reputation over the past 11 years for its professionalism and quality services.
Their Executive Search practice focuses on consulting and recruiting CEOs, Business Leaders, and Functional Leaders. They emphasize understanding the client's needs to find candidates who bring real value to the organization.
Moreover, you may find the article on "Career Update: Headhunting" from [CareerOne](http://www.careerone.com.au/jobs/job-search/career-update-headhunting) useful. It discusses the growth of the headhunting industry worldwide and the increasing demand for executive search services.
I hope this information is helpful to you.
Best regards,
Abhisek Jain