Born in Aspe, Province of Alicante, Valencian Community, Lillo began his career with local Valencia CF, playing three seasons with the reserves.

[2][3] In between, he spent the 2008–09 campaign on loan at Real Murcia CF,[4] playing only 13 competitive games as the club finished 14th in the Segunda División.

[5] On 21 March 2010, Lillo appeared in his first official match with the main squad, featuring the first 45 minutes of a 2–0 La Liga home win against UD Almería.

[6] In late May, as his contract with Valencia was expiring, he signed with Elche CF;[7] however, due to a mistake from his agent, the move was declared void and, two months later, he joined Almería.

[10] He played 26 matches in his debut campaign, with the club being promoted to the top flight for the first time ever, and on 11 July 2014 renewed his link for a further year.