Vadalá began playing football in the Club Atlético Provincial youth system. He was a highly regarded prospect, and made a strong impression while training with FC Barcelona at age 12.[1]
He signed his first professional contract with Boca Juniors in 2014. Vadalá made his competitive debut in a Copa Libertadores group stage match in February 2015, before he went on loan to Unión de Santa Fe where he scored one goal in 19 matches.[2]