Born in Gerena, Seville, Andalusia, Genaro was a Sevilla FC youth graduate.
[2] Genaro made his senior debut with the C-team on 17 September 2017, starting and being sent off in a 4–0 Tercera División home routing of CD San Roque de Lepe.
[3] He made his professional debut with the reserves the following 25 March, coming on as a late substitute for Curro in a 0–1 away win against Real Zaragoza in the Segunda División championship.
On 13 August 2021, free agent Genaro agreed to a 1+1 deal with Málaga CF, still in the second tier.
[9] Genaro only became a regular starter for the Albicelestes in the 2023–24 season, as they achieved promotion from Primera Federación, but departed the club on 30 June 2024 as his link expired.