At TradingScreen Hong Kong I am in charge of global development for client and broker connectivity. I am managing development and maintenance of connectivity applications across Asia, Europe, and the U.S.A. The connectivity development group is creating solutions that are easy to configure and maintain to accommodate the demands of both buy-side clients and brokers. This is achieved by using an intuitive domain specific language (DSL) to define the transformation rules between internal and external message formats. ANTLR is utilized to generate Java code from DSL for efficient message transformation.