Before emigrating to the US, he worked at what was then the Computer-Aided Design Centre (CADCentre) in Cambridge, UK,[2] along with his brother Dick Newell (who went on to co-found two of the most important UK graphics software companies – Cambridge Interactive Systems (CIS) in 1977 and Smallworld in 1987).
[8] Newell departed Xerox PARC to join CADLINC Inc.,[9] a factory automation startup, as VP of Advanced Development.
There he led the development of a variety of CAD/CAM software applications, such as CimCAD (a 3-D drafting program) [10] and Intelligent Documentation [11] (an early electronic document editor integrating text, graphics, and information from relational databases).
He departed CADLINC to found the computer-aided design software company Ashlar in 1988.
[7] In 2007, Newell was elected a member of the National Academy of Engineering for contributions to computer-graphics modeling, rendering, and printing.