Michael Kirwan, CIO of Yahoo, has stepped down from his role of chief information officer after less than two years at the company.
The AllThingsD blog broke the news yesterday. Yahoo confirmed the departure and added that David Dibble, executive vice-president of service engineering and operations for Yahoo and Kirwan's boss, will take on the CIO's responsibilities.
At Yahoo, Kirwan was responsible for the company's IT infrastructure, corporate applications, CRM and premium services infrastructure.
The IT executive joined the web giant from security vendor VeriSign, where he had been working for nearly seven years.
"Mike has a powerful ability to motivate managers working for him to produce their best work without feeling as though they are being coerced or manipulated," Shaun Norris, then a senior IS manager at VeriSign, said of Kirwan in a recommendation on his LinkedIn profile.
"As part of Mike's team you found yourself wanting to excel and overachieve without always realizing at the time that it was often his unique approach that brought about that mindset," he added.
Prior to VeriSign, Kirwan worked in several financial services organisations, including Bank of America, Bank of California and Union Bank of California.