In my Study Bible with study notes written by Henry Morris, he says that Job probably lived around the time of Abraham because there are no references to the Mosaic laws or even the children of Israel.
He also says that except for the first eleven chapters of Genesis, Job is probably the oldest book in the Bible. He says that it contains more references to the creation and the flood than any other book in the Bible besides Genesis.
He also says that except for the first eleven chapters of Genesis, Job is probably the oldest book in the Bible. He says that it contains more references to the creation and the flood than any other book in the Bible besides Genesis.