TTEC Holdings — which has two operations centers in Tempe and one in Phoenix — is looking to hire 145 customer service and sales representatives including for B2B and online marketing. Colorado-based TTEC (Nasdaq: TTEC) is a digital customer service and technology firm. It has landed operations hubs at the Hayden Ferry development in downtown Tempe, near Hardy Drive and Elliot Road in Tempe and off Interstate 17 and Bell Road in Phoenix.