Born in Ottawa, Jeffrey received his musical training at McGill University and the New England Conservatory of Music. His principal teachers include Ted Griffith, Douglas Yeo and Richard Erb.
Jeffrey is an alumnus of the National Youth Orchestra of Canada and a former member of Orchestre symphonique de Québec. He joined the Toronto Symphony Orchestra in 1994.
He is instructor of bass trombone at The Glenn Gould School at The Royal Conservatory in Toronto and teaches low brass privately to performers of all ages.