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JR Graterol has a diverse work experience in the telecommunications industry. JR started their career in 1995 as a Radio Frequency Engineering Manager at Bellsouth International, where they worked until 2001. Following that, they joined Carter Group Canada as an Electronic Design Engineer for a year. In 2002, JR Graterol joined TELUS as a Senior Radio Frequency Engineer and worked there until 2007. Their most recent role was at Cogeco Connexion, where they served as the Director of Video & IPTV Engineering, starting in 2007.

JR Graterol has a Master's degree in Telecommunications Engineering from the University of Toronto, which they obtained from 2004 to 2006. JR also holds a Bachelor of Science degree in Electrical, Electronics and Communications Engineering from Universidad Metropolitana (VE), which they obtained from 1988 to 1994. In addition, they are a registered Professional Engineer (P.Eng) with Professional Engineers Ontario and has the certification of "Ing." from Colegio de Ingenieros de Venezuela.