In 2019, Gary Hockin, a developer from Swansea, UK, joined Twilio as their Developer Evangelist. He credits his career progression to the power of open source and developer communities, which he has been involved with since 2011. Gary's journey began with contributing to the Zend Framework community and later to the PHP community, where he received support and encouragement from generous developers. As a Developer Evangelist at Twilio, Gary aims to be the voice of both Twilio in the PHP community and the PHP community in Twilio, promoting open source communities and encouraging others to get involved. Gary's personal story highlights the impact that open source contributions can have on one's career, with a single line of code changing his life forever.