Minimum for an FO is:
1000 TT
First class med
ATPL no restrictions
Airbus or boeing type preferred but I know of many guy that got on without it.
Age 57 or older need b744 type.
The recommendation from a pilot really isnt necessary and I received a bad boy from the DO when I did recommend as was told they don't want outside influence. I still have the email. So who knows. Good luck.