Complex sentence: Schmertz began his own consulting business, Schmertz Co., after leaving his Mobil position in 1988, along with going on to work for Bob Dole's 1988 presidential campaign.
Split into simpler sentences: Schmertz began his own consulting business, Schmertz Co., after leaving his Mobil position in 1988. He also worked for Bob Dole's 1988 presidential campaign.