The most common and most likely answer to this crossword clue is the 10 letter word STONEMASON
I've seen this crossword clue in Financial Times
S
T
O
N
E
M
A
S
O
N
More clues leading to the result STONEMASON
- Craftsman’s pit working to bring in graduates
- Man soon set off — his business may be flagging
- One working in rock moans notes in wrong order
- Man soon set to train as builder
- Mum entertained by Jagger et al performing — one getting into rock?
- Craftsman means to groom his boy
- Manual worker translated Mao sonnets
- Rock artist?
- Craftsperson one mum and lad spotted at side of street
- Builder so set on man getting sacked
Buddy explains!

The straight part
We know that "builder" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case builder = stonemason.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 STONEMASON mean?
STONEMASON noun- One who works in stone