Rapi Castillo is a tech worker, community organizer, and (amateur) baker. He has developed maps, interactives, mobile applications, and websites for various clients in the non-profit and startup sector. He has also founded organizations that are centered on open-source software for non-profits and campaigns. He lives in Queens, New York with his husband Benny and cat Poufie.

He has worked on projects that have been used by grassroots campaigns like Alexandria Ocasio Cortez, Bernie Sanders, and others. He is laser-focused on creating technology that empower people to learn more about the issues and do something impactful. He has also worked at the United Nations Office for the Coordination of Humanitarian Affairs, giving him a unique intersectional perspective on how technology and information come together to empower people.

As a community organizer, Rapi aims to create spaces where people can build meaningful relationships with one another to achieve common goals. As the founder of Progressive Coders Network, he sought to create a space for tech workers across the world can build open source solutions for non-profits and grassroots campaigns to effectively remove the influence of big-money in politics. He also co-founded and Progressive HackNight, a bi-weekly meetup in New York City, to educate tech workers on the most pressing issues of the day and match their skills with non-profit organizations. He is also a founding member of Queens United Independent People, a civic-education organization based in Queens.