[1] In 2013, after representing Club Bansander (two stints) and Racing de Santander,[2] he moved abroad and joined Inter Milan's youth setup.
[3] On 1 February 2016, Paulino returned to Spain and agreed to a two-and-a-half-year contract with Atlético Madrid, being assigned to their Juvenil A squad.
[6] He contributed with five goals in 24 appearances (play-offs included) during that season, as the club achieved promotion to Segunda División B. Paulino made his first team – and La Liga – debut on 21 June 2020, coming on as a half-time substitute for Lucas Pérez in a 0–6 away loss against RC Celta de Vigo.
[9] On 20 June of the following year, he left after paying his release clause,[10] and moved to Liga MX side Pachuca just hours later.
[11] On 25 July 2023, Paulino returned to his home country and its second level, after agreeing to a one-year loan deal with Real Oviedo.