Ranking on GooglePlay in top 10 positions – Expert for mobile app marketing worldwide – Downlaods by Today

We are in search of a individual / company who is an expert with mobile application advertisement. We are going to launch an application for android and would need someone who can help us reach out world wide with marketing for this application... (Budget: $250-$750 USD, Jobs: Advertising, Bulk Marketing, Google Plus, Internet Marketing, Mobile Phone)