India’s largest mobile operator Bharti Airtel has lost another senior executive, with its head of strategic alliances, Manish Prakash, to join rival Telenor Group as head of enterprise.

Prakash, who joined Airtel in 2014, will be based in Singapore and starts the B2B position in September.

His exit follows a restructuring in July, with Airtel’s domestic enterprise, corporate and small business unit consolidated into a single group, led by Ashok Ganpathy as director, the Economic Times said.

Over the past 15 months Airtel, which has a 25 per cent market share, has seen a number of high-profile departures.

A year ago Indian online marketplace Snapdeal hired its business-to-consumer CMO Govind Rajan, who also headed Airtel Money, and appointed him as its new chief strategy officer. About the same time Snapdeal poached Airtel’s chief product officer, Anand Chandrasekaran, and gave him the same position at the e-commerce startup.

Manoj Kohli, managing director of Bharti Enterprise, left the company in June 2015 after ten years with the operator.