[2] After impressing with the under-18 squad, he made his first team – and Serie A – debut on 25 June 2016, starting in a 0–0 away draw against Universidad Católica del Ecuador.
Julio scored his first senior goals on 22 October 2017, netting a brace in a 5–2 home success over Delfín.
[6] On 30 March 2022, LDU announced the transfer of Julio to Brazilian club Santos on a 14-month loan deal, with a buyout clause.
[10] On 12 March 2019, Julio was called up by manager Jorge Célico to the Ecuador national team for friendlies against United States and Honduras.
[11] He made his full international debut nine days later, coming on as a second-half substitute for Renato Ibarra in a 0–1 loss against the former at the Exploria Stadium in Orlando, Florida.