Work with corporation perhaps engaging a Parisienne at the right moment (11)
I believe the answer is:
opportunely
'at the right moment' is the definition.
I can't judge whether this defines the answer.
'work with corporation perhaps engaging a parisienne' is the wordplay.
'work' becomes 'op' (abbreviation for opus).
'with' says to put letters next to each other.
'corporation perhaps' becomes 'portly' (I can't justify this - if you can you should believe this answer much more).
'engaging' means one lot of letters goes inside another (inserted letters are engaged or involved in others).
'a parisienne' becomes 'une' ('a' in French).
'portly' enclosing 'une' is 'portunely'.
'op'+'portunely'='OPPORTUNELY'
Can you help me to learn more?
(Another definition for opportunely that I've seen is " in a timely manner".)