Tata Consultancy Services has emerged the largest recruiter over the last year, followed by Infosys and Wipro Technologies, according to the annual rankings compiled by Nasscom.

Nasscom on Thursday announced the annual rankings of top 20 IT-BPO employers in India for 2010-11.

The rankings reveal a surge in hiring, with almost one third of the industry aiming to grow by 25 per cent, and a little over two-third of the industry planning to increase their employee base by 10 per cent in the coming year.