hireling
Definitions
A person employed to do menial work, often implying a lack of loyalty or integrity.
Someone who works solely for financial gain, typically with a derogatory connotation.
Examples
The corrupt politician used a common hireling to carry out his dirty work.
He refused to be treated like a mere hireling who would do anything for a paycheck.
The mercenary was nothing more than a hireling, loyal only to the highest bidder.