Rance Cleaveland is Chairman and a co-founder of Reactive Systems, Inc.
RSI's technology derives from basic research Dr. Cleaveland performed
in the areas of modeling and verification of concurrent systems. He is
currently a Professor of Computer Science at the University of
Maryland and is Executive Director of the Fraunhofer Center for
Experimental Software Engineering. He previously served on the
Compter Science faculty at SUNY at Stony Brook (1998-2005), and North
Carolina State University (1989-1998).
Cleaveland holds a B.S. in Mathematics and Computer Science from
Duke University, and an M.S. and a Ph.D. in Computer Science from
Cornell University. He currently is on the editorial boards of three
different research journals and has been a member of the program
committees of over 35 different research conferences. He has headed
over $6 million of federally-funded research projects over the past 15
Scott Smolka is a Director and co-founder of Reactive Systems,
Inc. Smolka has been on the faculty at SUNY at Stony Brook since 1982.
His work focuses on analysis techniques for reactive systems, and he
also has extensive experience in building verification tools, including
Winston and the Concurrency Factory.
Smolka holds an A.B. and A.M. in Mathematics from Boston University
and a Ph.D. in Computer Science from Brown University. His research
has been supported by grants totaling over $7 million from the NSF,
the Army, the Air Force, and IBM.
Chief Executive Officer
Steve Sims is CEO and a co-founder of Reactive Systems, Inc. He is a
co-author of the initial version of the company's flagship Reactis product
and continues to lead its development. Sims enjoys working closely with
RSI's customers to ensure that the company's offerings exceed their
Prior to the inception of RSI, Sims worked as a researcher at the
Naval Research Laboratory in Washington, DC. His work focused
on the development of efficient system modeling and verification
Sims holds a B.S. in Mathematical Sciences from the University of
North Carolina and an M.S. and a Ph.D. in Computer Science from North
Carolina State University.
Chief Technology Officer
David Hansel is Chief Technology Officer of Reactive Systems.
Hansel has been the lead Reactis developer since he joined Reactive Systems in
2000. He also works closely with customers to help maximize their benefit from
Reactis. He holds a B.S. degree in Computer Science from the University of
Kaiserslautern and a M.S. degree in Computer Science from the Technical University
Director of Asian Operations
Michio Morimoto is Reactive Systems' Director of Asian
Operations. Mr. Morimoto directs sales and marketing efforts for
all of Asia, except India, and manages post-sales technical support
Morimoto previously served as Reactive Systems' Director of
Japanese Operations and led the successful 2007 launch of the
company's Japan branch office. In that role, Morimoto managed
the transition from a distributor to a direct-sales office while
growing Japan sales for Reactive Systems' Reactis testing and
Morimoto is an 20-year veteran of the embedded software
industry with a focus on deploying model-based-design solutions
in the automotive industry. Prior to moving towards a focus
on technical sales and marketing, Morimoto worked as a programmer
for three years.
Harry Sims is Treasurer of Reactive Systems, Inc. Sims, a 28-year
veteran of IBM, served as a Software Project leader and Manufacturing
Industry representative. In the latter capacity he made presentations
to many key IBM customers, including the board of General Motors.
Prior to employment at IBM, Sims served as a Finance Officer in the
U.S. Army attaining a rank of Captain.