As the CEO of Twilio SendGrid, a business unit of Twilio, he is responsible for leading the strategy and operations for the industry-leading email platform. He joined SendGrid as CEO in 2014 and during his tenure, the company's revenue more than quadrupled to $146 million in 2018. He also led SendGrid's 2017 initial public offering and guided the company through its $3 billion acquisition by Twilio in 2019.