6+ years of experience in pre-commissioning, Commissioning and start-up at site including Oil & Gas Refinery and Petrochemical plant. Premium advantages will be given to who has any Process Operation Experiences in C3/C4 Refrigerant Process. Read, write and speak English . Experience in Overseas Project is preferred. Project execution as a Pre- Commissioning Supervisor assigned at least one project. Prepare Pre-commissioning package such as flushing, Reinstatement and leak test etc. Perform Pre-commissioning work such as flushing, Reinstatement /leak test and mechanical test running Check the pipe/Instrument and all construction condition to prepare punch items. Coordinate with the COMPANY inspector to perform pre-commissioning activities Make up chemicals and oils for commissioning Prepare and support chemical cleaning / Catalyst loading to the reactor.