Roi grew up in Hadera in the north of Israel. He served in the IDF Spokesperson Unit, and then was a parliamentary assistant in the Israeli Knesset, later spending eight years as advisor to Israel's education, transportation, and home front defense ministers. Roi was a partner in the establishment of the "Pnima" movement, which aims to unite all segments of the Israeli people and bring together all of the different groups in order to promote a more egalitarian and democratic society. Roi currently lives in New York where he is chief of staff to the Permanent Mission of Israel to the United Nations. In this role he deals with complex political and diplomatic issues and leads strategic processes and projects. Roi works at the forefront of information of Israel's international challenges and promotes the State of Israel as a leader in various fields such as technology, agriculture, humanitarian aid, and more.