Domestic servant getting new start is friendly (6)
I believe the answer is:
genial
'is friendly' is the definition.
(similar in meaning)
I cannot understand how the rest of the clue works.
(Other definitions for genial that I've seen before include "Cordial" , "Agreeable in Ealing" , "Cheerful and well-disposed" , "'Affable, warm and friendly (6)'" , "Jolly" .)