Hello !
" student employee " isn't the same as "student and employee".
If you want to say that you're both things, student and employee, you must say: " Soy estudiante y trabajo " or " Estudio y trabajo " ( I study and work )
" Trabajadora " cannot be used in your sentence, because it has different meaning in that context ( it's an adjective )
The translation for "employee" is " empleada", but "empleada" doesn't sound good in your sentence.
I hope that my explanation has been clear.
Best wishes
Sofía