Bangalore: According to Nasscom India's top software giants like Tata consultancy services, Infosys and Wipro are all set to hire more than 90,000 professionals compared to last year where the number was only 20,000. HR people are on their toes at leading IT firms as they are witnessing highest-ever job creation. September, was the month that faced highest staff strength growing over 50 percent. This is the highest hiring growth recorded in the IT sector since recession. It is also estimated that IT hiring has grown to 20-22 percent between August and September. It was in December 2008,when the recession had hit the IT industry due to global economic crisis and companies had to close their doors with "No vacancy" notice placed outside their offices for IT professionals. Now IT industry have way passed the recession and is looking forward for promising projects. Apart from looking to serve new projects with fresh recruits, companies are also beginning to build bench strengths for future business. IT biggies are stocking up skills and training them in advance in anticipation of new contracts they are expected to bag in the near future. Companies like JPMorgan, Citibank are sending more projects to India and with firms such as IBM and Accenture, are under pressure to hire more professionals. The war for retaining and hiring talent is back. Some companies are hiring as a preventive measure for attrition and some are just stocking up for the promising projects that they are to foresee. Interestingly, IT companies are launching innovative programmes to hire their ex-employees. Top technology firms, Infosys Technologies and EDS-MphasiS , are hiring back staff they had let go during last year's economic crisis. This is a no less excitement for ex-employees as well. 29 year old Ashwani Kant, who left Infosys last year to join multinational rival Cognizant said,"Quitting was never a mistake, but if I am getting better salary, role and visibility about my growth, why shouldn't I join back?" HR managers said that they welcome the trend."Since we are familiar with them, there are no interview processes for the candidates. Even senior employees who worked with us have shown interest in rejoining the company. I would expect at least 25-50 of our former employees rejoining us," said Elango R, chief HRO at MphasiS. MphasiS is offering its former employees, who left the company during the past six months, to apply for a similar role, or even explore newer opportunities. Infosys has launched its 'Green Channel' initiative, which attracts applications from around 350 professionals who had left last year. Similarly, California headquartered computer storage vendor NetApp has hired back almost half its staff who left last year. Manjunath SR, Senior Director, HR at NetApp said "These employees left only because of the downturn and therefore there was no reason why they should not be hired back."