tel: (250) 729-5416
email: tim@rowledge.org
British Subject, legal permanent resident of Canada.
A Microsoft Word format version of this document is available HERE
Experience in developing and implementing Smalltalk systems on all classes of machine from custom boards through PDAs to workstation and servers.
Making embedded Smalltalk systems for PDA class machines.
Many years experience using C & assembler to implement and debug Smalltalk VMs and other complex systems.
ARM assembler, C, world-class expertise in several Smalltalk implementations including managing the development of VisualWorks.
Designed and built software, user interfaces, motorcycles, model aircraft, publicity materials, furniture.
Virtual Machine builder tools for the Squeak project www.squeak.org
Knowledge Tree representation & animation tools for DiscoveryMachine Inc www.discoverymachine.com
Online test creation, management and taking webserver for GreMost Publications to accompany the 'AccountingAce 911' college textbook.
Viewpoints Research Institute, Glendale CA
Architect-in-chief and VM/system czar. Responsible for all the Squeak Smalltalk virtual machine and low-level system code, plus acting as architectural overseer and arbitrator for engineering decisions.
exobox was building a user environment for Internet Appliance machines (such as the i-Opener, NIC, etc.) with a strong accent on the communications arena. The system was built entirely in Squeak Smalltalk and hosted primarily on linux (though of course Squeak is portable to all OSs without conversion or porting), with Mozilla, Jabber, POP3 etc. support.
Member of the Homeworks/Trio project team. (Search for 'MediaWire Home Network' or 'AvioDigital' on the net for public information.)
Worked on implementation of a Real Time virtual machine for Smalltalk, running on a custom designed webpad-type machine with a fast StrongARM cpu, lots of memory and flash storage, high quality colour touch screen, fast multiple network connections etc. A workshop paper discussing the work was presented at OOPSLA'99.
Built a demo/prototype of a patented instant video-on-demand delivery system via broadband.
Worked on an ultra-wide band wireless data link project. Worked on a project using wavelets to symmetrically compress and decompress video with a very cheap hardware design. Definition and design of a next-but-two-generation TV set top box.
Lead Software Engineer responsible for a team producing the systems level of a complex VisualWorks based stock derivative trading framework and application delivery system.
Developed the basic objects and frameworks to support an extensive application layer, with complex database requirements and sophisticated signal handling, object versioning, concurrency, reliability and scalability needs. Used ODI's ObjectStore/Smalltalk and GemStone/VW for database capabilities. This application is in use a several major banking houses and handles hundreds of millions of dollars of trades per day.
Advisory architect and reviewer, handle project establishment, management and review. Worked with Adele Goldberg on the development of LearningWorks for the Open University.
Manage 10+ person engineering staff group that produced the entire Smalltalk language and development system for ParcPlace's 12 platforms.
Acted as budget manager for entire R&D dept, responsible for approximately $4m/yr budget.
Lead the project group handling the Object Engine and Smalltalk low level system code related to all the PC and Mac platforms - anything 'not-unix'.
General engineer on the Windows Object Engine and general Smalltalk matters.
Implemented a Smalltalk-80 Object Engine (based on the BrouHaHa VM by Eliot Miranda) for the Acorn RiscPC micro-computer, the only non-ParcPlace Systems version on then on sale.
Taught Smalltalk, both Smalltalk-80 and Smalltalk/V; approximately 400 students taught over 4 years.
Various consultancy projects for Smalltalk Express Ltd for clients including Tektronix, UK Ministry of Defence, ICL, Vickers Shipbuilding Plc, Shell Oils Plc etc., including work on text recognition, map analysis, image processing, word processor system, spreadsheet.
Implemented Smalltalk-80 Object Engine for the Active Book Company's PDA machine, adding many capabilities to the basic system such as a rommable image and Object Engine, multi-segment memory management, extended floating point, advanced graphics etc.
Assorted industrial design commissions, ranging from company logos and brochures to motorcycles, exhibition stands and office equipment.
Extended ideas from Royal College of Art course (see education section) involving user interfaces for solid modelling CAD systems.
First involvements with Smalltalk, using it as a prototyping language for new ideas in user interface designs. Experiments and work referenced in 'Evolutionary Art and Computers' by William Latham & Stephen Todd, Academic Press 1992
Work covered many areas including graphic design, user interface design, programming (C, Smalltalk, PL/1, BASIC).
Final year project at Imperial College was developing a computerized system to assist the Rolls-Royce Experimental Stress Analysis dept. in gathering and analysing data from photo-elastic stress tests. Required development of interface control software as well as designing and self-building the appropriate sensors.
Premier Fine and Practical Arts college in the world. See also IBM above.
Premier Engineering college in UK. See also Rolls-Royce above.
I've always built things. As a child I built my own toys as soon as I was tall enough to reach the work surface of my grandfather's workbench. These days I build much more complex, involved, and expensive models and toys (radio controlled scale aircraft for example). I have an extensive, much used workshop with which I built approximately 40% of all the furniture in my house and did most of the welding on my motorcycle projects. I have built servers, workstations and webpads from chip and board to user software.