He held international leading chief conductor positions, including the RTVE Symphony Orchestra, Nationaltheater Mannheim, Orquesta de Valencia and Bern Theatre.

[4] He worked with singers such as Boris Christoff, Birgit Nilsson, Cesare Siepi, Alfredo Kraus, Luciano Pavarotti, Montserrat Caballé, Plácido Domingo, Ainhoa Arteta and Leo Nucci.

[7] He made recordings, including Rossini's Il barbiere di Siviglia with Elīna Garanča for Sony, the five Piano Concertos by Heitor Villa-Lobos with pianist Cristina Ortiz for Decca, works by Joaquín Turina for MDG, and Donizetti's Requiem for Orfeo,[7] with Cheryl Studer, Aldo Baldin, Jan-Hendrik Rootering, and the Bamberg Symphony Orchestra.

[3] Among his works stand out Suite Burlesca (1972),[1] Sinfonía del descubrimiento (Symphony of the Discovery) (1992) with the occasion of the 500th anniversary of the discovery of America,[12][7] Five songs on Poems by Alonso Gamo (1996) for soprano and orchestra,[11] Sinfonía del Agua (Water Symphony) (2007) commissioned by Emasagra,[1] Morning dawning (Passacaglia) (2010), his only opera Atallah,[12][7] Letters from a lover, a work for baritone and symphony orchestra dedicated to his wife, Alessandra,[8] a Piano Concerto and a Violin Concerto.

[7] He recorded his orchestral works Sinfonia del descubrimiento and Canciones with soprano Marussa Xyni and the Hamburger Symphoniker.

A reviewer from Gramophone described him in 1999 as a "readily communicative composer of fastidious gifts" and added: "The two works here combine a strong lyrical and dramatic impulse with a tasteful sprinkling of local colour.

[13] Gómez Martínez was married to Alessandra Ruiz-Zúñiga,[12] to whom he dedicated a five-piece orchestral song cycle, setting their love letters to music.