He is considered by Venezuelan soccer experts such as Richard Paez, Jorge Duran, Rodolfo Paladini among others) as the most prepared and potential coach of his country.
Among his advisors, tutors, teachers and coaches during his career are Juan Osorio (Colombia), Alberto Villalobos (VEN), his father Celso De Oliveira (BRA), Luis Molina (Perú), Arnold Ramirez (Costa Rica), John Ramirez (Colombia), Rafael Amaya (Colombia), Alfonso Mondelo (actual Soccer Director of MLS), Bruce Arena (USA), Bob Bradley (USA), Manolo Contreras (VEN), José "Pepito" Hernández (Spain), Jupp Heynckes (GER), Paco Rielo (Spain), Mike Jeffries (USA), Alvaro "Pitillo" Valencia (Colombia), Mariano Moreno (RFEF), Ignacio Prieto (Chile), Kiril Dojčinovski (Macedonia), Roberto Falcòn (Spain), Aaron Winter (NED), Ruud Dokter (NED), Wim Koevermans (NED).
He was part of the 1988 U-19 MITRE Indoor Soccer National Championship team Hotta Bavarian SC in Baltimore.
After graduation, de Oliveira pursued his professional career in Venezuela, Brasil, USA, Spain, and El Salvador.
Also, Daniel has represented South America in five (5) AEFCA Symposiums (Split 2012, Antalya 2013, Zagreb 2014, Como and 2016 Belgrado 2017) for top coaches in Europe.
He scouted and coached National Team of Venezuela players such as Fernando Aristeguieta (America de Cali), Josef Martinez (Atlanta United MLS), Alexander González (Huesca, Spain), Juanpi Añor (Malaga FC), Josmar Zambrano (Zulia FC), Rómulo Otero (Atletico Mineiro of Brazil), Carlos Rivero (Dep.
His great relationship in the world of soccer has allowed him to continually visit several elite football programs around the world and learn from entities such as Real Madrid, Sporting Gijon, Dinamo Zagreb, Fluminense FC, Rio Grande Valley FC, the Spanish Federation, LA Galaxy among others.
Most recently, as a coach He took Yaracuyanos FC, a very young average team, to the 1st place of the Central Group of Torneo Clausura "Permanencia" and his team was unbeaten for 10 consecutive games having a record of 7 wins and 3 T. In March 2016 Daniel was called to be part of the most successful Club in Venezuela, Caracas FC.