Formerly CDIO at HMRC, Dearnley left the public sector at the end of 2017 and now leads digital transformation efforts at Premium Credit.
At HMRC, Dearnley was key to the replacement of the "outdated" internal IT systems and launching digital tax accounts for individuals and businesses.
He has held senior positions at Vodafone, Cable and Wireless, and Boots.com.
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Humanity faces a number of challenges that technology can overcome. Unfortunately, too many of the people in power are also the most ignorant
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Microsoft to create $1bn fund to accelerate development of carbon-tackling technologies
The event, dedicated to technologists, returns for another year and is open for entries now