Increasing our website reach with social media -- 2

Need an expert, native english, USA/Canada, speaking social media experienced person to handle our social media promotion to grow all of our social media sites and blog/website marketing to grow our sales, with real followers and visits. We are interested in long term growth, not a scheme to gather tons of followers over night.\r\n\r\nWe are primarily interested in increasing our website reach and to increase our unique visitors from the USA, without increasing our bounce rate which is at 3.5%.\r\nPlease do not respond unless you can validate expertise, in social media marketing.