Freelancer for field marketing executive

I'm looking for an experienced field marketing executive to help oversee our mobile accessories sales. The perfect candidate should have a strong track record of success in executing promotional events and have a great understanding of customer databases and feedback. The freelancer should be able to juggle multiple tasks at one time and on their own initiative and show evidence of successful promotion strategies. Our goal is to increase our mobile accessories sales in quantity per month with a set target. Ideally, we would like the project to be completed as soon as possible, so we can assess the effectiveness of our sales and marketing strategies.