Synonyms background (a person’s past experiences, knowledge, education etc.):
But we need to know more about your background.
record (information about character or achievements):
We are not employing anyone with a criminal record.
past (the history of a person): No one knows about my past.
history (a record of past events connected with someone):
There isn’t any history of heart disease in my family so far.
upbringing : My upbringing certainly prepared me.
track record (a record of previous achievements, or failures):
This job needs at least someone with a good track record.