How do I find a value in a table based on other criteria

I'm trying to find a suitable formula that looks at two cells (J3 and V3) in Sheet 1 (a person's employment grade (e.g. 18) and their performance percentage e.g. 92.5%), finds those values in a table on Sheet 2 and then places the corresponding value from that table in Sheet 1 at cell Z3.

Any help would be greatly appreciated.