[4][5] From 2006 to 2009, he was a postdoctoral research fellow with the Joukowsky Institute for Archaeology and the Ancient World at Brown University.
[6] In 2009 he joined the Department of Modern Languages and Literatures at Texas Tech University where he is the President's Excellence in Research Professor of archaeology and the head of classics.
[7] In 2017 he was a Senior Research Fellow with the Centre for Advanced Study at the Norwegian Academy of Science and Letters.
[10] Witmore is "known for blending in-depth engagements alongside objects with longstanding and pressing questions of human and nonhuman existence.
"[14] Witmore also co-authored the 2012 book Archaeology: The Discipline of Things along with Bjørnar Olsen and Michael Shanks (archaeologist), which according to Michael Brian Schiffer "exhorts the reader to embrace the materiality of archaeology by recognizing how every step in the discipline's scientific processes involves interaction with myriad physical artifacts, ranging from the camel-hair brush to profile drawings to virtual reality imaging.