Hi,
We sometime do some custom development for payment plugins (or else). You can use the "contact us" form for such request. If you want us to give you a quote, you can use the form. If you have a test account for the platform it will be very useful (to not say required) for tests and validation.
There is also a dedicated part in the forum for commercial jobs or external developers can't answer to requests.
Regards,
Edit:
www.hikashop.com/forum/payment-methods/8...t-plugin.html#124845
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.