Jesús Quintero was born in the Caseta de la Luz of San Juan del Puerto in August 1940, being the youngest of three children of the local electrician and his wife.

He began his professional journey in Huelva, where he aimed to pursue his acting vocation while receiving training.

Still in his twenties, during a performance at the Lope de Vega in Seville, a well-known radio personality praised his voice and recommended that he enter the field.

Attracted by the idea, he started collaborating at Radio Popular in Huelva and at the Southern Broadcasting Center of Radio Nacional in Seville, where he discovered his passion for journalism, communication, and radio.

He then began with the "Diarios Hablados" (Spoken Diaries), also on Radio Nacional, and moved to Madrid.

His resistance to confine his creativity to the Spoken Diaries earned him several sanctions on his record, but he eventually succeeded in promoting highly successful RNE programs such as "Música de los cinco continentes" (Music from the Five Continents), "Circulo internacional" (International Circle), or "Estudio 15/18," which was the first major magazine on Spanish radio, initiating the format of blocks still used in contemporary radio. This was followed by "Ciudades" (Cities) and "El hombre de la roulotte" (The Man with the Caravan), where he traveled through cities and towns meeting people of all kinds and conditions.

Later, he wanted to return to Andalusia with programs like "Tres a las Tres" and "Andalucía viva," broadcasting from Seville, where he settled.

On the horizon, a hill could already be seen silhouetted against the starry sky of the early morning, where his nickname and one of the greatest successes of his career would be born: "El loco de la colina" (The Madman of the Hill), in 1980. Radio Nacional had commissioned him a program for the night that was supposed to be called "Para mayores sin reparos" (For Adults Without Reservations), a name he reluctantly agreed to until one dawn on air, while talking about the well-known Beatles song, he said, "I feel like a madman on a hill." Listeners reacted immediately, and from then on, no one could prevent the program from being called that.

In 1982, the program moved to SER's lineup, where it stayed until 1986, with rebroadcasts in channels in Argentina and Uruguay. "El loco de la colina" represented for many the biggest content revolution on Spanish Radio, an intimate style that set a precedent, introducing silence as part of the radio language in the interview genre.

After this milestone, he made the leap to television with his first program in the medium, "El Perro Verde" (The Green Dog), which won the Ondas Award and gained much attention in Spain and Argentina, where he filmed one of its seasons. Also from Seville, he created Radio América, a radio station whose main commitment was technical and content quality, an ambitious project that he eventually postponed for a new television project, which he named "Qué sabe nadie" (What Does Anyone Know), Ondas Internacional, and the King of Spain Award for Journalism.

Following this program, in 1991, came "Trece noches" (Thirteen Nights), a naked space with no more decoration than the light masterfully manipulated by Teo Escamilla and two men face to face: Jesús Quintero leading the conversation and the great Antonio Gala, discussing thirteen topics of now and forever: art, money, love, religion, television.

A year later, he premiered "La boca del lobo" (The Mouth of the Wolf) on Antena 3, an immersion into the human condition. After a short break, he returned to radio with "El lobo estepario" (The Lone Wolf), his last program in the medium.

In 1996, he returned to television with another revolutionary program: "Cuerda de Presos" (String of Prisoners), in which he spent three months visiting more than 30 prisons and interviewed over 100 inmates to firsthand understand their crimes and punishment. It was chosen as the best program of the year in Uruguay and received an award for journalistic originality from the International Journalists Club.

This was followed by "Vagamundo" (Wanderer), an author's program with personality and its own style, attentive to living currents of thought, culture, and art, open to the street and to people with stories to tell, in search of new communication paths. Then came "Ratones Coloraos" (Colored Mice) on Canal Sur, with great audience success, "El Loco de la Colina" (The Madman of the Hill) on Televisión Española, "La Noche de Quintero" (Quintero's Night), "El Gatopardo" (The Leopard), "La Noche del Loco" (The Madman's Night), and "El Sol, la sal y el son" (The Sun, the Salt, and the Sound), a program dedicated to flamenco that he produced and filmed at the Teatro Quintero, the theater, studio, and school he founded in 2008 in the center of Seville.