P N S V Narasimham will become the senior vice-president and global head of human resources.
The stock dipped 6.4% to Rs 451, extending its previous day's 4% decline on the BSE.
However, total income for the company grew by 11.75% to Rs 815.84 crore.
It will commence operations in April and is set to employ 1,000 professionals over the next 18-24 months