Complex sentence: William Happ was insufficiently competent for the work, whereas technologist Dean Knapic forged his university degree and certificate of military service, and later brought Shockley's technologies to competitors.
Split into simpler sentences: William Happ was proven insufficiently competent for the work, as a technologist Dean Knapic having forged his university degree and certificate of military service. He later brought Shockley's technologies to competitors.