SIOUX CITY, Iowa (AP) — Stream Global Services is looking for fill 350 positions at its service center in Sergeant Bluff near Sioux City. The company, headquartered in Bloomington, Minn., operates about 50 call centers around the world and has over 31,000 employees. The company says the new positions in Sergeant Bluff will provide sales and customer support for a variety of clients. Steam Global will host an open house at the service center on Thursday.