Self-employed, travelling cleaner seeks iron (9)
I believe the answer is:
freelance
'self-employed' is the definition.
(synonyms)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for freelance that I've seen before include "Of journalist, one who works for several employers, self-employed" , "Independent" , "He works alone" , "Self-employed person offering services where needed" , "Medieval mercenary" .)