DSc. in Computer Science from State University of Campinas (UNICAMP) and master's in Electrical Engineering from Federal University of Rio de Janeiro (UFRJ). Areas of interest include Computer Systems Architecture, Middleware, Grid computing, Cloud computing, Services, Portals, Simulations, Security Issues. Invited Editor for Special Issues on Middleware for Grid Computing with Jounal on Concurrency and Computation: Practice & Experience (1532-0626), Invited Editor (Special Issue) and Board of Editors for Jounal of Network and Systems Management (1064-7570), and reviewer for IEEE Distributed Systems Online (1541-4922), Computer Networks (1389-1286), Computer Communications (0140-3664), Information and Software Technology (0950-5849). Coordinator of different Projects on Grid Computing supported by Brazilian funding agencies. Societies: SBC | ACM | IEEE-CS | SBPC.