Cloud computing is generally accepted as the workable solution for computation intensive problems such as big data analysis. Among the major building blocks for the underlying infrastructure, MPI (Message Passing Interface) is one of the most effective solutions. This study aims to propose a Java-based service architecture using Open MPI for cloud computing operations. Web-based interfaces are provided for further inquiries of the operation results. Additional interfaces are supported for computational needs as well for users who are not familiar with the language details. Simple protocol is available for Java developers to transfer their job for further processing.