After retiring from professional fencing and moving to America, Gilman took over the sabre program at the DC Fencers Club in Silver Spring, Maryland, where he coached for over a decade. In 2013, he opened the Capital Fencing Academy in Rockville, Maryland. He has also worked with Ed Korfanty and the Penn State University elite sabre program. In all of his years coaching, Gilman has trained fencers who have become champions and medalists at World Cups, Junior Olympics, NCAA, and USFA national competitions. He is certified as a fencing master with the US Fencing Coaches Association.