Pseudo Philo Biblical Antiquities 8:8
7 And Jacob dwelt in the land of Chanaan, and Sichem the son of Emor the Correan forced his daughter Dina and humbled her. And Simeon and Levi the sons of Jacob went in and slew all their city with the edge of the sword, and took Dina their sister, and went out thence. 8 And thereafter Job took her to wife and begat of her 14 sons and 6 daughters, even 7 sons and 3 daughters before he was smitten with affliction, and thereafter when he was made whole 7 sons and 3 daughters. And these are their names: Eliphac, Erinoe, Diasat, Philias, Diffar, Zellud, Thelon: and his daughters Meru, Litaz, Zeli. And such as had been the names of the former, so were they also of the latter.
Genesis Rabbah 57
AggadahRabbi Abba bar Kahana said he lived during the days of Jacob, and Rabbi Abba bar Kahana stated that Dina was the wife of Job, as it is written about Job's wife (Job 2:10): 'like one of the senseless women speaks', and it is written about Dina (Genesis 34:7): 'for he had committed an outrage in Israel'. Rabbi Levi said he lived during the days of the tribes. Rabbi Levi, in the name of Rabbi Yosei bar Khalaphta, said he was born during their descent to Egypt and died upon their ascent; you will find that the main years of Job's life were only two hundred and ten years, the same duration the Israelites were in Egypt.
Notes and References
"... The later life of Dinah is passed over in silence. We catch not the slightest glimpse of her in Jacob's household during the long story of Joseph, and while her name is mentioned once more, in passing, in a list of Jacob's descendants (Genesis 46:15), she apparently did not join her father and brothers in going down to Egypt. What became of her? A number of early sources suggest that Dinah became the wife of Job, the central figure of the biblical book bearing his name. For although that book mentions the fact that Job had a wife, it does not say what her name was. This was just the sort of blank that early interpreters were anxious to fill, especially when they could do so by 'borrowing' a name or a character from somewhere else. Now while the book of Job does not say when Job lived, Genesis 36:33 mentions a certain 'Jobab' among the descendants of Jacob's brother, Esau. If 'Jobab' was another form of the name Job, then Job might have been around - and looking for a wife - at precisely the time when Dinah was returned from Shechem to her father's house ..."
Kugel, James L. The Bible as it Was (pp. 243-244) Harvard University Press, 1998