Charles Le Brun
The engraver Gérard Audran taught him engraving while they were both working for Le Brun. Charles Le Brun nominated Genoels as a candidate member of the Académie Royale in Paris. Genoels was accepted in the Académie in 1665. He then received a house and a pension from the French king. Genoels was also paid by the king to collaborate on paintings by Charles Le Brun on the battles of Alexander the Great. Genoels worked for various leading gentlemen of Paris including François Michel Le Tellier and Louis, Grand Condé (for his Château de Chantilly), before returning to Flanders in 1669.