Tim Rowledge has a BSc from the Imperial College in London, an ACGI from the City and Guilds Institute and a Masters in Design from the Royal College of Art. He began his career as a student engineer at Rolls Royce Aero-Engines Ltd after which he was awarded a Research Fellowship at the IBM UK Scientific Centre. During his career he has worked as Project Lead, Architect and Manager of complex Smalltalk projects. Tim has world-class expertise in several Smalltalk implementations including several years managing the development of VisualWorks and is the founder and long time member of the Squeak Foundation. Companies and research facilities where he has worked include: ParcPlace Systems Inc where he managed the Visual Works engineering team; Interval Research Inc where he worked on implementation of a Real Time virtual machine for Smalltalk; Exobox Inc. where he led the team responsible for all the Squeak Smalltalk virtual machine and low-level system code; and, HP Labs where he worked with Alan Kay to build a Smalltalk/ARM/iPad precursor.