Crossword Genius

Research scientist leaving home after end of job (6)

Ross

I believe the answer is:

boffin

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'research scientist' is the definition.
(I've seen this before)

'leaving home after end of job' is the wordplay.
'leaving' becomes 'off' (I've seen this in other clues).
'home' becomes 'in' ('he's home' can mean 'he's in').
'after' is a charade indicator (letters next to each other).
'end of job' becomes 'b' (I can't explain this - if you can you should believe this answer much more).
'off'+'in'='offin'
'offin' after 'b' is 'BOFFIN'.

Can you help me to learn more?

(Other definitions for boffin that I've seen before include "Technical expert" , "Scientist (sl.)" , "Research scientist" , "Technical researcher" , "Military scientist" .)

I've seen this clue in The Telegraph.
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