Complex sentence: In 1999, Johnson moved back to Utah to work for the publicly traded software company TenFold Corporation, lasting there until 2002 when he was hired by Overstock.com to be general counsel.
Split into simpler sentences: In 1999, Johnson moved back to Utah to work for a publicly traded software company TenFold Corporation. Johnson worked at TenFold until 2002 when he was hired by Overstock.com to be general counsel.