As the former Associate Director for Museum Programs at the Smithsonian Institution’s National Museum of the American Indian, Tim managed the museum’s largest organizational group across its facilities in Washington and New York from 2005 to 2015. A long list of critically acclaimed exhibits and programs were produced during his tenure, creating an era that significantly advanced the institution's museology and reputation. Since 2015 Tim was instrumental in the development of four masterworks of public art in the Niagara Region. Two of these consist of memorials of national significance that recognize and honour Indigenous peoples’ contributions to the defense and establishment of Canada. The first, Landscape of Nations: The Six Nations and Native Allies Commemorative Memorial, was unveiled in Queenston Heights Park in 2016. The second, First Nations Peace Monument, was established in DeCew House Heritage Park in 2017. Tim also served on the committee for Voices of Freedom Park, opened in 2018, dedicated to the African Canadian experience. And in 2019 he guided the curatorial selection of the contemporary art masterpiece, Curtain Call, installed on the FirstOntario Performing Arts Centre in St. Catharines. He continues to develop Legacy Spaces that serve to bring history alive.