The most common and most likely answer to this crossword clue is the 8 letter word BACKROOM
B
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Buddy explains!
The straight part
We know that "working behind the scenes" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case working behind the scenes = backroom.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BACKROOM mean?
BACKROOM noun- A room near the rear of a premises, especially one that is only accessible to a privileged few and can be used as an inconspicuous meeting place.
- Of, relating to, or happening in a backroom
- Characterized by secrecy or anonymity