Complex sentence: He was initially responsible for development and delivery of electronic products centered around the content of the newspaper, and was at the helm when the NYTimes.com website made its debut in 1996.
Split into simpler sentences: He was initially responsible for the development and delivery of electronic products centered around the content of the newspaper. Notably, Nisenholtz was at the helm when the NYTimes.com website made its debut on the Internet in 1996.