There has been a steady increase in the use of mobile computing, especially with appliances such as sensors. The main challenge in this scenario is to increase network sen- sor lifetime. Cluster computing integration with wireless sensor networks can represent an interesting answer for high-performance computing to monitor several environ- ments. Computational resources available from cluster con- figurations are cost effective components to improve several classes of applications in many organizations. Scientific, industrial and commercial applications are more relying on cluster performance. OSCAR is a useful open software ap- proach to manage cluster of workstations. In this article, we present a middleware design and implementation that integrates an OSCAR cluster configuration with a wireless sensor network environment.