Check the webbsite amazon.jobs but that shift isn't one of the set shifts. Afaik they don't do special shifts. Their website has what shifts are available and at which warehouse. The Thornton warehouse has no pt when I was there.
Unfortunately, most of what Amazon brand labels as "Fulfilment Centers" do not staff part time workers. The labor need is high, and they just dont have positions available that can be accomplished by part time work. However, Amazon Sortation centers mainly staff part-time employees. This is at least the case for DEN5, the Sortation center located in northern Aurora (not the same as DEN2 located by DIA). There may be some job openings there.
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