At least 1+ years of working experience extensively Calypso customizations preferable in Back Office area. Knowledge on Calypso Component customization: Engines, Event Server, Data Server, Transfers, Messages, BOCre, PL Positions, BO Positions, Reporting Framework, etc. Customization knowledge on Message Handlers, Transfer, Custom service creation, Creation of Custom Engine, Customization of Swift Messages, Customization of Scheduled Tasks and other back Office customization Proficient in Java, with a good knowledge of its ecosystems and proficiency in object-oriented programming Knowledge on Collections API, Control structures, access modifier, exception handling