Loyalty Program Experts Needed

I am an advertising company that has business clients that pay my company to promote them to local residents. I am interested in utilizing an API issued from a cash transfer payment company called DWOLLA so when residents make payments to my advertisers I get as the Facilitator a data file of the transactions --which will help me to justify my advertising cost. I would like to get quotes from people who have some experience in doing coding in the loyalty industry. Do you have sample of jobs you have done? Quote me on an hourly basis what your rate is. This may be a 2 week project to 3 weeks. But just give me your hourly rate. Al