BY Fast Company < 1 MINUTE READ

Jack Dorsey used Twitter to announce his resignation from Twitter.

In an email to staff he also announced Parag Agrawal as his successor. Agrawal, 37, has spent most of his career at Twitter. He joined the company in 2011 and took the CTO role in 2017. He holds a PhD in computer science from Stanford University and a bachelor’s degree in computer science and engineering from the Indian Institute of Technology Bombay in Mumbai, India. Before coming to Twitter, Agrawal did research internships at AT&T, Microsoft, and Yahoo. Agrawal increased the speed of new technology deployment at Twitter, and also sought to increase the use of machine learning across the company’s systems. Before becoming CTO, he focused on ways to increase audience growth in 2016 and 2017.Dorsey wrote in an internal message that he had planned on Agrawal to succeed him “for some time given how deeply he understands the company and its needs.”

Agrawal was involved in hiring Jay Graber in August, the new lead for Twitter’s Project Bluesky. The research initiative, which Agrawal helmed when it was announced in December 2019, is focused on developing a set of open and decentralized standards that would give users more control of their content, help social media companies collaborate on how posts are promoted, and potentially allow for more effective management of misinformation and other harmful content.