We have a number of payment processors integrated into our current system, but we would like to add another, called HiPay.
We have the API for it, and can provide a copy of the current PHP files that we use on our other processors to assist with your work.
Please note - this is URGENT and we need to have it finished for this Monday. Only bid if you can do this timeframe. It should not be difficult or take a long time, but we do need it completing for this Monday (the 17th) at the latest.