Produce profound effect with "I am a reporter" (7)
I believe the answer is:
impress
'produce profound effect' is the definition.
(impress can mean to have a profound effect)
'with i am a reporter' is the wordplay.
'with' says to put letters next to each other.
'i am' becomes 'I'm' (contraction).
'a reporter' becomes 'press' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'im' put next to 'press' is 'IMPRESS'.
(Other definitions for impress that I've seen before include "Make a mark on, emphasise" , "Create an effect in the mind of" , "print" , "Inspire admiration in (someone)" , "Make mark on or earn admiration" .)