British tech designer in France making some cash (5)

I believe the answer is:

fiver

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'some cash' is the definition.
(informal term for five pounds)

'british tech designer in france' is the wordplay.
'british tech designer' becomes 'ive' (I can't justify this - if you can you should give a lot more credence to this answer).
'in' is an insertion indicator.
'france' becomes 'fr'.
'ive' placed inside 'fr' is 'FIVER'.

'making' acts as a link.

Can you help me to learn more?

(Other definitions for fiver that I've seen before include "paper ready" , "money" , "Bank note" , "Where to see portrait of Elizabeth Fry" , "Hazel's brother in Watership Down" .)

I've seen this clue in The Independent.

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