marketer

n. one who markets, trader

Marketing is a social process which satisfies consumers' wants. The term includes advertising, distribution and selling of a product or service. It is also concerned with anticipating the customers' future needs and wants, often through market research.
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Noun
1. someone who promotes or exchanges goods or services for money
(synonym) seller, vender, vendor, trafficker
(hypernym) merchant, merchandiser
(hyponym) ticket agent, booking clerk
(derivation) market

v. market, sell; buy at a market; sell in a market; trade or deal at a market; develop a strategy for the sales of a certain product

(n.)
One who attends a market to buy or sell; one who carries goods to market.