automated betting software developer

I am not sure if this is the right place to place this. The job requires creating or recoding API that interfaces with a betting web site. The package will allow the user to pull live information from the website, report that information and allow the user to input certain criteria and based the result automatically place bets. The site has a well developed API interface which is accessible to members. I would like to hear from anyone who has a proven track record of developing package like this, in particular any programmers that have worked with the web site BETFAIR.