He has worked on Internet technologies since 1980, and was one of the principal engineers behind the ISO Development Environment (ISODE) open-source implementation of the OSI protocol stack.
He founded Isode Limited in 1992, focusing on high end messaging and directory products, initially employing the ISODE codebase.
In 1999, he managed the merger of ISODE to form MessagingDirect, and subsequently spent two years in California.
In 2001, MessagingDirect was acquired by ACI Worldwide, and Steve re-launched Isode in 2002, again focusing on X.400 and directory products.
Steve is the author of at least 32 IETF RFCs,[1] has published one book, "Implementing X.400 and X.500: the PP and QUIPU Systems" (ISBN 9780890065648), and has contributed to several others.