Crazed legal expert dismissing judge as handy operator (10)
I believe the answer is:
manicurist
'handy operator' is the definition.
(someone who does hand treatments)
'crazed legal expert dismissing judge' is the wordplay.
'crazed' becomes 'manic' (I've seen this in another clue).
'legal expert' becomes 'jurist' (synonyms).
'dismissing' suggests deleting specific letters.
'judge' becomes 'j' (abbreviation for judge).
'jurist' with 'j' removed is 'urist'.
'manic'+'urist'='MANICURIST'
'as' is the link.
(Another definition for manicurist that I've seen is " pro with file?".)