public servant• Something of the concernedpublic servant had crept into his manner.• Despite his eventualbetrayal of me-for which I have forgiven him-Hu was a superb implementer and an outstanding public servant.• She did not take her own advice, either as a ground-breaking lawmaker or later as an educator and volunteerpublic servant.
From Longman Business Dictionary
public servantˌpublic ˈservant noun [countableC]
formal an elected government official, or someone whose job is working for the government
a 41-year-old career public servant (=someone who spends their whole working life in a government job, usually at a high level)