Among a small number there’s an engineer, one leading a high life (4)

I believe the answer is:

ibex

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But I can't explain it at all! Could you help me understand?

(Other definitions for ibex that I've seen before include "one used to high living" , "Come out of an egg" , "Pyrenean mountain goat" , "Mountain animal" , "Large-horned mountain goat" .)

I've seen this clue in The Hindu.

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