Ronalf Webb. Photo/the-star.co.ke

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The head of M-pesa at Safaricom Ronalf Webb has exited the company at a critical time when the telecom firm is undertaking a major upgrade of the mobile money platform.Ronald Webb, a fomer Equity Bank executive , will step down from his position today after a year in charge of the critical docket.On Monday, Bob Collymore, Safaricom’s chief executive informed his employees of Mr Webb’s imminent departure, saying he was moving back to the United Kingdom “for family reasons.”“I wish him all the best as he returns following 18 productive years in Kenya,” Mr Collymore said in a staff memo.“In the meantime, I would like to ask that we all give our usual support to Brian Wamatu, who will be standing in as interim director, financial services.”Unfortunatley Mr Webb leaves Safaricom at a time when the company is undertaking a phased upgrade of its M-Pesa platform.It is the third major M-Pesa upgrade in the 10-year existence of the pioneering mobile money service.