He was apparently at the GE Computer Division
in the early days, and designed one of GE's process
control computers, and was previously working for
RCA on the Bizmac program.  See Homer R. Oldfield,
"King of the Seven Dwarfs: General Electric's
Ambiguous
Challenge to the Computer Industry", IEEE Computer
Society Press, 1996.
--- Al Kossow <aek at bitsavers.org> wrote:
  Interesting bit of trivia I discovered today.
 I was digitizing an oral history recorded in Mar
 1988 with
 Arnie Spielberg today, and it turns out he was the
 architect
 of the 1800/1130 at IBM San Jose before becoming VP
 of Engineering
 at SDS in 1965.
 A transcript will be up on the CHM web site
 eventually, and will
 post a URL when it's available.