Project Manager at UNDP- for A project that is directly related to implementing Energy efficiency for existing and new buildings for Amman city, and he was a former manager for Sustainability & Renewable Energy Center at Greater Amman Municipality (GAM) who is also the Municipal representative locally, & internationally in and around all renewable energy & sustainability fields. Eng. Rababaa was one of the pioneers to address energy efficiency , water and green houses emissions challenges faced by the city of Amman; since 2008 he has been developing & implementing GAM’s strategy for Sustainability, and led the city to be the first city in south west Asia to join C40 group.