Serissa Research, Inc.

About the Principals


About the Principals


Designing Systems for Internet Commerce
Larry Stewart

Lawrence Stewart

Lawrence C. Stewart is Chief Technology Officer of Serissa Research, Inc.

He received an S.B. in Electrical Engineering from MIT in 1976, followed by M.S. and Ph.D. degrees from Stanford University in 1977 and 1981, respectively, both in Electrical Engineering. His Ph.D. thesis work was on data compression of speech waveforms using trellis coding.

Stewart joined the Xerox Palo Alto Research Center in 1977, where he designed the interface between the Xerox Alto and the Arpanet, worked on packet radio, and developed floating point microcode for the Alto. After graduation from Stanford he joined the Computer Science Lab at PARC, where he designed the hardware and software for the Etherphone, an ethernet based telephone system.

In 1984 he joined the DEC Systems Research Center in Palo Alto, where he designed the Microvax CPU modules for the Firefly multiprocessor workstation. He also built the Firefly voice hardware, audio server, and a substantial number of client programs which use audio on the Firefly.

In late 1989 he moved to the Boston area and joined the Digital Cambridge Research Lab. In 1990 and 1991, Stewart's major project was the Alpha AXP effort. He was the primary designer of the I/O subsystem for the first Alpha multiprocessor and also worked on the first Alpha AXP based PC, for which he developed software and ported the X Window system.

In 1992 and 1993, Stewart was one of the principal designers and implementors of the AudioFile project. AudioFile is a network transparent, device independent system for handle audio on computers.

In 1994, Stewart joined Open Market, Inc. as Chief Technology Officer. Open Market is a Massachusetts based software company working in the area of Internet commerce, where he had primary responsibility for delivering products and services for an end-to-end solution for enabling commerce on open networks.

In 1997, Stewart became Chief Scientist of Open Market, with responsibilities for new technologies and product architecture for Open Market's products for Internet and Information Commerce. In addition, he was named an Open Market Fellow in 2000.

In 2001, Stewart co-founded Serissa Research. Consulting engagements have included eCommerce, Security, Cryptanalysis, and IP.

In 2004, Stewart was one of the founding team of SiCortex. SiCortex was a supercomputer startup which developed a family of compact supercomputers with up to 5832 processors and 8 Terabytes of RAM in a single cabinet. An extremely high performance Kautz graph interconnect provided sub-microsecond latency and enormous bandwidth. Systems were sold to academic, industrial, and government customers. As Chief Software Architect, Stewart was responsible for overall software architecture and implemented much of the control and communciations software.

In 2011, Stewart joined Quanta Research Cambridge on a part-time basis, where he works on operating systems, network coding, and field programmable gate arrays.

Contact:, +1 508 358 4168

Win Treese

Win Treese

Win Treese is President of Serissa Research, Inc.

He has previously worked as Associate Director of the Hariri Institute for Computing at Boston University.

From 2004 to 2009, he led software development and then advanced technology development for SiCortex, a supercomputer startup, which was known for its highly-integrated design, low power consumption, high-speed interconnect, and robust Linux operating environment.

In 1994, Treese was part of the founding team at Open Market, Inc., one of the earliest companies building systems for Internet commerce. Over time he served as Director of Security and Vice President of Technology, and was named an Open Market Fellow for his technical contributions to the design of many of Open Market's products. Much of his work there focused on the security architecture for e-commerce products.

Before joining Open Market, he was a member of the research staff at the Cambridge Research Laboratory of Digital Equipment Corporation, where he worked on several projects, including the design and implementation of Digital's Internet firewall and AudioFile, a distributed system for network audio. Prior to his work at Digital, he was Chief Systems Engineer at MIT's Project Athena, which developed many key technologies in modern computer systems, including the Kerberos network security system. He received an B.S. in Mathematics from the Massachusetts Institute of Technology in 1986, and an M.S. in Computer Science from Harvard University in 1992.

In addition, he chaired the Transport Layer Security (TLS) Working Group of the Internet Engineering Task Force (IETF) from its inception until the first version of the standard was published in 2002. For many years, he wrote the regular "Putting It Together" column in NetWorker magazine, published by the ACM. He also chaired the 8th USENIX Security Symposium.

Contact:, +1 508 314 4359