Need to hire bidder for Web & Mobile development compay

We are looking to hire freelancer bidder having good portfolio at freelancing sites (upwork, freelancer, etc) those who can do bidding for us. We work in web technologies (PHP, CakePhp, Joomla, Wordpress, .net & java) and mobile technologies (Android, iOS, hybrid mobile technologies using phonegap/cordova, ionic framework). We work on web-front-end technologies like jQuery, jQuery Mobile, Bootstrap. We like to give 15-20% on final project cost as a fees depending upon project cost and duration. Write us and show your portfolio, send us your minimum monthly target. Write us your business strategy also if you can generate leads at other sources then also discuss this with us. We will provide company details during discussion. Thanks