 He first earned experiences at Bianchi and then at Fiat.In 1910 he was hired as chief engineer to the new company A.L.F.A which was established at Portello in Milan, later to become Alfa Romeo when the company stopped buying manufactured licensed products from the French automaker Automobiles Darracq France.The first Alfa designed by Merosi was A.L.F.A 24 HP, which came on the market on 24 June 1910.