Dr. Menasce is the Senior Associate Dean at The Volgenau School of Information Technology and Engineering and a Professor of Computer Science at George Mason University. He was the founding co-Director of the E-center for E-Business, and the founding co-director of the MS in E-commerce program at George Mason University until August 2005. He received a Ph.D. degree in Computer Science from UCLA (1978), an MS in Computer Science, and a BSEE both from the Pontifical Catholic University in Rio de Janeiro (PUC-RIO), Brazil (1975 and 1974, respectively). He has held visiting faculty positions at UMIACS, University of Maryland, College Park ('91-'92) and at the University of Rome, Italy ('83). He was a full-time faculty member of the Department of Computer Science at PUC-RIO, Brazil for 14 years, where he was also chair of CS ('81-'83). Menascé was elected an ACM Fellow in 1997 "in recognition of outstanding technical and professional achievements in the field of information technology." He was elected a member of IFIP's Working Group 7.3 in 1998 based on his "contributions and accomplishments in the field of performance evaluation." The Computer Measurement Group (CMG) selected him as the recipient of the 2001 A. A. Michelson Award for "outstanding contributions to computer metrics." In 2005, the IEEE elevated Menasce to the grade of Senior Member.

He published over 185 technical papers and was the chief author of five books, including "Performance by Design: computer capacity planning by example," "Capacity Planning for Web Services: metrics, models, and methods," "Scaling for E-business: technologies, models, performance, and capacity planning," and "Capacity Planning and Performance Modeling: from mainframes to client-server systems", published by Prentice Hall in 2004, 2002, 2000, and 1994, respectively. Menasce was the author of Scaling the Web, a 3-5 page column that appeared in all issues of IEEE's Internet Computing for over three years starting in May 2002. He served as a member of the Board of Directors of the Washington Area CTO Roundtable from 2005 to 2008.

His research has been funded by DARPA, NASA, NSF, Virginia's Center for Innovative Technology, OPNET Technologies, TRW, Hughes Applied Information Systems, National Geospatial-Intelligence Agency (NGA), Brazilian Telecommunications Company, Brazilian Research Council (CNPq), Brazilian Ministry of Science and Technology, and IBM Brazil. Menascé was the recipient of various prizes, teaching awards, and best paper awards including Outstanding Paper Award in the 1995 IEEE International Conference on the Engineering of Complex Computer Systems and Best Paper Award in the 1997 Computer Measurement Group (CMG) Conference. He served as the President of the Brazilian Computer Society ('87 to '89) and as the first elected Vice-Chair of ACM's Special Interest Group in E-commerce ('03 to '05). He was the General Chair of ACM's 2007 Federated Computing Research Conference (FCRC), the Program Committee co-chair for IFIP's Performance 2005 Conference, the General Chair of the 2003 ACM Conference on E-commerce, the General Chair of ACM's Sigmetrics 1999, the program chair of the research track for CMG's 2000 conference, the program co-chair of the WOSP'2000 conference, the tutorial chair of ACM's Sigmetrics 1998 conference, and tutorial chair of the 2002 CMG conference. Menasce was an associate editor of the Electronic Commerce Research and Applications journal from Elsevier Science from 2001 to 2006 and an Associate Editor of ACM's Transactions on the Web (TWEB). He is a member of the Editorial Board of IEEE Internet Computing.

Dr. Menasce has consulted for SABRE (travelocity.com), IBM, United Online (netzero.com), Lockheed Martin, the US Mint, Peakstone Corporation, the Defense Information Systems Agency (DISA), the Ballistic Missile Defense Organization, the US Army, NASA, iXL, Capital One, TIS Labs at Network Associates, Hughes Applied Information Systems, the Center for Excellence in Space Data Information Systems, the National Institutes of Health, InterAmerican Development Bank, the United Arab Emirates University and Jones International University. He served as an expert witness in various alleged patent infringement cases and in an alleged misappropriation of trade secrets and confidential information case. He testified several times in federal and state court as an expert witness in these litigations. Menasce was one of the two founders and CEO, from 1982 until 1991, of a software company that specialized in the development of large software projects and in database management systems.

His areas of interest include autonomic computing, e-commerce, performance modeling and analysis, and software performance engineering.