Gil went through accounting studies in Nice (I.U.T) and Beaux Arts in Versailles before his hotel studies in Nice Hotel and Tourism School (B.T.S) and Hotel Management in Maxim's Institute of Paris. After a few years in Accor group in Thailand as Assistant F&B, Gil moved to Indonesia to open an exclusive club named Fabrice's World Music Bar and in May 1994 launched MTV Asia channel with Jon Bon Jovi as guest star.
"Brasserie" restaurant was created in 1998 and was awarded in 2002 as Best French Restaurant awards in Jakarta Kini, followed by popular "Praline" ice cream parlor and the famous "The Nine Muses Club" where local singers like Tompi or Dira Sugandi made their debut. From 2004 till 2014, Gil D'Harcour created and run 30 different concepts for high profile businessmen and young entrepreneurs, he has conducted specific consultancy missions for established clubs such as "Cafe Batavia", "I.S.C.I" sport club, The Goods Department and is now creating new concepts for a new hotel chain in Indonesia.
Gil has opened concepts in Jakarta, Surabaya, Medan, Jogjakarta, Batam, Cepu and also Singapore. In 2009, Gil DHarcour joined the association of FCSI, Foodservice Consultants Society International, the only association in the world giving accreditation for foodservice consultant worldwide. This is as an accredited consultant that Gil became columnist in the local magazine "Foodservice Today" for last five years.
In 2015, Gil created "Baguette & Co", a school catering company specialized in designing the best catering solutions for all the schools and universities in Indonesia which would like to embark in providing healthier meals options for the young generation. "Baguette & Co" will run German school foodservice facility in BSD area.