Born in Geneva, Gabriel Esteban grew up in a family of
musicians. He studied with François Guye at the Geneva Conservatory and with Clemens Hagen as well as Giovanni Gnocchi at the Mozarteum University of Salzburg. He was also an Artist in Residence at the Queen Elisabeth Music Chapel in the chamber music class of the Artemis Quartet. In parallel, he received precious advice from illustrious cellists such as Christophe Coin, Enrico Dindo, David Geringas, Thomas Grossenbacher, Frans Helmerson, Gary Hoffman, Maria Kliegel, Philippe Muller and Wen-Sinn Yang.

A prizewinner of international competitions in Switzerland, France, Austria and Hungary, he was invited to perform at the Kronberg Academy, the Seiji Ozawa International Academy, the Seiji Ozawa Festival in Japan, the International Piano Festival of La Roque d'Anthéron and collaborated with musicians including Tedi Papavrami, István Vardái, Suyoen Kim or Gilles Apap. An avid chamber musician, he premiered works at the Monnaie de Munt in Brussels, the Teatro Real in Madrid as well as the Grand Théâtre de Genève. He went on tour as a soloist with the Swiss Youth Symphony Orchestra in some of the biggest concert halls of the country such as Zurich's Tonhalle and Bern's Kultur Casino.

Gabriel Esteban performed as principal cellist with various ensembles, including the Orchestre de Chambre de Genève, the orchestras of the Verbier Festival and played under the baton of conductors such as Iván Fischer, Valery Gergiev, Manfred Honeck, Zubin Mehta, Seiji Ozawa, Esa-Pekka Salonen and Michael Tilson Thomas.

He was appointed assistant principal cellist of the Orchestre de la Suisse Romande in 2023.