Eric has worked at CampusExplorer? (http://www.campusexplorer.com), ThisNext? (http://www.thisnext.com), RentDotCom? (http://www.rent.com/), StampsDotCom? (http://www.stamps.com/), Citysearch (http://www.citysearch.com/), StructuralDynamicsResearchCorporation? (http://www.sdrc.com/), DoNotRent? (http://www.donotrent.com/) and XetronCorporation? (http://www.xetron.com/) (reverse chronological order).
See Anvilon http://www.anvilon.com/ for a personal site by Eric.
See NotLong http://notlong.com/ for one of Eric's weekend projects which friends have found useful.