Julius C. Jefferson Jr. is an active member of the library community and has served in leadership roles at the local, national, and international level. Jefferson is often called upon as an authority to speak on issues of importance to libraries and library workers. He has advocated for improved library services in a number of print and broadcast media outlets and is often sought as a speaker on library-related issues such as diversity, leadership, and professional development. Jefferson currently works for the Congressional Research Service at the Library of Congress, where he has served in various leadership roles.