French phrase
Depuis combien de temps travaillez-vous ~ ?
Meaning
How long have you been working in ___?
When to use it
Asks how long someone has worked in a field or role. It is neutral and suits casual or professional settings.
Example dialogue
Depuis combien de temps travaillez-vous dans ce domaine ?
How long have you been working in this field?
Je travaille dans ce domaine depuis dix ans.
I've been working in this field for ten years.