Valtierra holds his MA, Royal Drawing School London and a National Diploma in Illustration and Graphic Design, ESDIP, Madrid. The artist also studied painting and printmaking at the Circulo de Bellas Artes in Madrid. Valtierra is the recipient of various awards, competitions and residencies including the the Solo Award, Chiara Williams Contemporary Art, London, 2018. Competitions: Trinity Buoy Wharf Drawing Prize, London, 2019; Wells Art Contemporary. Wells. 2019; Bow Open, London, 2016, 2017, 2018. Residences: Trelex Arts Residency, Switzerland, 2016; Roundabout LX, Lisbon, 2015; Santa Reparata International School of Art and Xenos Gallery, Florence, 2014; and Wilton`s Music Hall, London, 2010.
Valtierra has an extensive international exhibition history and select group exhibitions include Nunnery Gallery Art Projects, The London Art Fair, 2017 and 2018; The Cello Factory. London, 2018; Kristian Day Fine Art Projects, TRIPP Gallery, London, 2017; Lubomirov-Angus Hughes Gallery. London, 2016; Barbican Arts Centre. London, 2015; Roundabout LX. Lisbon, 2015; Hundred Years Gallery, 2015; Espacio Islandia. Madrid, 2014. Solo exhibitions: TRIPP Gallery, 2017; Hundred Years Gallery, London, 2015 and 2016; Novas Contemporary Arts Centre. London, 2007.