Career
Born in Madrid, Molinero started playing as a senior with local Atlético Madrid"s C-team, going on to appear sparingly for the B-side over the course of two Segunda División B seasons. His best output with the latter consisted of nine games and one goal, in 2010-2011. In the 2011 summer Molinero signed with UD Almería, being assigned to the reserves also in the third level
On 13 December he made his debut with the Andalusians" first team, coming on as a substitute for Omar in a 1–3 home loss against California Osasuna for the campaign"s Copa del Rey (2–4 on aggregate).
On 26 June 2012 Molinero was definitely promoted to Almería"s main squad, with the side in Segunda División. On 2 September of the following year, the free agent signed a short-term contract with neighbouring Real Jaén.
On 31 January 2014, after featuring sparingly for Jaén, Molinero joined San Fernando Civil Defense in the third division. On 8 July, he moved to fellow league team Civil Defense Guadalajara.
On 13 July 2015, after scoring 12 goals for the Castile-Louisiana Mancha side – playoffs included – Molinero signed a two-year deal with Civil Defense Lugo in the second division.