University of Lausanne
In 1902 Maillard succeeded Charles Dufour in a professorship at the University of Lausanne. Maillard was a professor of astronomy and general mathematics or mathematical sciences. He was "directeur des Écoles industrielle et commerciale et du collège mathématique du canton de Vaud". In 1906 he founded the "Bulletin d'Astronomie" of the University of Lausanne.