Martinengui is the Deputy Artistic Director of the Teatro Regio di Torino, Italy, and prior to this, he was the Principal Conductor of the Orchestra of the National Theatre of Macedonia. He studied piano with Piero Rattalino and composition with Bruno Bettinelli. He specialized in orchestral conducting under the guidance of Donato Renzetti and Giacomo Zani, a study that led him to collaborate with various youth orchestras. As a musicologist, he has written specialized articles on piano for magazines such as MUSICA, SYMPHONIA, and PIANO TIME.

At the same time, he began his career in theaters, working at the Teatro Regio in Turin as a musical coordinator, a position that allowed him to become familiar with the operatic repertoire, collaborating with musicians like Gianandrea Gavazzeni and Yuri Ahronovijtch.

Starting in 1997, for several years, he worked for the Teatro Massimo in Palermo, where he held important positions in artistic direction and superintendence. With the orchestra of the Teatro Massimo in Palermo, he conducted symphonic concerts and directed significant productions such as Benjamin Britten's "Noye’s Fludde" (also a CD), Hans Werner Henze's "Pollicino," and Lucio Gregoretti and Nello Sani's "Una Favola per Caso." He also served as an assistant and orchestra coach for artists like Vladimir Ashkenazy, Rudolph Barshaj, and Bruno Campanella.

In addition to his association with the Teatro Massimo in Palermo, he has conducted at other prestigious theaters such as the Teatro Comunale in Bologna, Rome Opera, Teatro Filarmonico of the Verona Arena, Teatro Bellini in Catania, Deutsche Oper Berlin, Cagliari Opera, Teatro Petruzzelli in Bari, Teatro Donizetti in Bergamo, Teatro Pavarotti in Modena, Teatro Comunale in Ferrara, Opera Ireland in Dublin, State Opera of Tirana, Palm Beach Opera, Teatro Goldoni in Livorno, Luebeck Theatre, and orchestras like the Sicilian Symphony Orchestra, Abruzzo Regional Orchestra, Malaga Symphony Orchestra, Balearic Symphony Orchestra, Murcia Symphony Orchestra, Orchestre de la Suisse Romande in Lausanne, Laval Symphony Orchestra in Canada, Tenerife Symphony Orchestra, Toscanini in Parma, Hong Kong Symphony Orchestra, Munich Radio Orchestra, and Montreal Symphony Orchestra. Among his most important performances are Bellini's "I Capuleti e i Montecchi" at the Teatro Massimo in Palermo, Donizetti's "Don Pasquale," "The Bell," and "La Figlia del Regimento" at the Teatro Donizetti in Bergamo, Verdi's "La Traviata" and Carl Orff's "Carmina Burana" at the Teatro Bellini in Catania, and Bellini's "La Sonnambula" at the Comunale in Bologna.

He received great acclaim from both audiences and critics for his performances of Verdi's "Otello" during concert tours at major Italian theaters in the 2006/2007 season, repeating the same initiative the following year with the opera "Andrea Chenier".

In May 2007, he successfully debuted at Opera Ireland in Dublin conducting Donizetti's "Don Pasquale." He received excellent reviews for his CD recording with the Dvorak Ostrava Theatre Orchestra featuring arias by Puccini with soprano Amaryllis Nice. He made his debut in Donizetti's "Lucia di Lammermoor" at the Deutsche Oper in Berlin. He achieved significant success in his debut at the Arena di Verona with Verdi's "La Traviata" and also at the Avences Festival conducting Mozart's "Don Giovanni."

Likewise, his conducting in Puccini's "Manon Lescaut" at the theaters of Modena, Ferrara, and Piacenza with the Toscanini Orchestra was acclaimed, and he opened the Tenerife Festival for two consecutive years with Verdi's "Falstaff" and Puccini's "Tosca", being appointed by the festival director, Giancarlo del Monaco, as the principal guest conductor. Subsequently, he participated in an important project by the Brazilian Opera Society with Rossini's "Il Barbiere di Siviglia" touring Brazil and made his debut in the United States of America with Mozart's "Così fan tutte" at the Opera House in Palm Beach.

Another significant debut took place at the Petruzzelli Theatre in Bari during the Symphony Season. Recently, he conducted two of the most prestigious orchestras: the Munich Radio Orchestra and the Montreal Symphony Orchestra. He conducted Mascagni's "Iris" for the Fondazione Arena di Verona (previously conducted in Verona only by Mascagni himself) to great success with both the audience and critics. He debuted at the Dubrovnik Festival and the National Centre for Performing Arts in Beijing.

He also conducted the opening of the Taormina Festival with "Rigoletto" (with worldwide broadcast) and "Aida" at the opening of the Syracuse Festival with the Teatro Bellini Orchestra of Catania.

Recent important commitments include "Tosca" with Opera Hong Kong, "Rigoletto" in Catania, "Turandot" at the Performing Arts Center in Seoul, Korea, a concert with Diana Damrau and the Budapest Philharmonic, and tours throughout Europe and Japan.