Amazon is hiring nine full-time employees to operate the sorting center in Building 3 and will have 25 full-time employees working at the delivery station in Building 4. The company plans to hire 350 part-time associates for both locations, according to the announcement from Hazelwood.

An Amazon spokeswoman said the company plans to have the facilities open later this year and that hiring has already begun.

Both the sorting facility — Amazon calls them “sortation centers” — and the delivery station are smaller than the two big “fulfillment centers” Amazon announced last year in Edwardsville, which were expected to employ about 1,000 people full time.

The sorting and delivery stations are the way stations between the fulfillment centers and Amazon customers.

Speculation mounted in January that Amazon would soon be moving into a Missouri location after it began collecting state and local sales tax here, which it isn’t legally required to do unless it has a physical presence in a state.