Jorge Guerricaechevarría graduated in History from the University of the Basque Country. He debuted in the world of film on writing the screenplay for the short film Mirindas asesinas (1990) by Álex de la Iglesia. Since then, their careers have been closely related and they have participated as co-screenwriters on several of his feature films: Acción mutante (Mutant Action,1993), El día de la bestia (The Day of the Beast,1995), Perdita Durango (Dance with the Devil,1997), Muertos de risa (Dying of Laughter,1999), La comunidad (Common Wealth,2000, winner of the Best Actress Award at the San Sebastian Festival), 800 balas (800 Bullets,2002), Crimen ferpecto (Ferpect Crime,2004), Los crímenes de Oxford (The Oxford Murders,2008), Las brujas de Zugarramurdi (Witching & Bitching,2013, presented at the San Sebastian Festival), the episode “The Confession” of the anthology film Words with Gods (2014), Mi gran noche (My Big Night, 2015, also premiered in San Sebastian), El bar (2016) and Perfectos desconocidos (2017), pending release. He additionally collaborated with De la Iglesia on his television projects: the TV movie La habitación del niño (The Baby’s Room, 2006) and the series Plutón BRB Nero (2009).
With Pedro Almódovar he wrote the screenplay for his film Carne trémula (Live Flesh, 1997). He has also regularly collaborated with Daniel Monzón in films such as El robo más grande jamás contado (The Biggest Robbery Never Told,2002), La caja Kovak (The Kovak Box,2006), Celda 211 (Cell 211,2009), El Niño (2014) and the director’s new project, Yucatán (2017). Besides these, he has signed the screenplays of Nos miran (Norberto López, 2002), Platillos volantes (Óscar Aibar, 2003), Fin (Jorge Torregrosa, 2012), Cien años de perdón (Daniel Calparsoro, 2015) and El cuaderno de Sara (Norberto López, 2017).
Among his credits for television are the series Canguros (1995) and the TV movies Psiquiatras, psicólogos y otros enfermos (2009) and Alakrana (2010).
His screenplays have been acknowledged with four Círculo de Escritores Cinematográficos Award nominations, one for the European Film Awards, one for the Gaudí Awards and six for the Goya Awards. In 2010 he won the latter accolade (with Daniel Monzón) for the screenplay of Celda 211.