On 9 July 2018, after being a regular starter with Mallorca B, Lombardo was loaned to third division side Racing de Santander for the campaign.[3] On 9 August of the following year, after achieving promotion to Segunda División, his loan was renewed for a further year.[4]
Lombardo made his professional debut on 17 August 2019, starting in a 0–1 home loss against Málaga CF.[5] He scored his first professional goals on 20 October, netting a brace in a 3–3 away draw against CD Tenerife.
In June 2020, Lombardo suffered a serious knee injury,[6] which left him unregistered for the entire 2020–21 campaign. On 6 July 2021, he signed a three-year contract with SD Huesca also in the third division.[7]