Dear tbm55,
We are glad to inform you that we have developed similar thing before I have go through your project "I want to develop a payment processor similar to paypal stripe 2checkout etc."
Relevant Skills and Experience
I have 10+ years of experience in Payment Gateway Integration, PayPal API, Payroll, Paytrace, Software Architecture
I can do this within your budget too $750 - $1500 USD
please check more from here https://www.freelancer.com/u/mmadi.html?page=portfolio
I am ready to work with you,kindly waiting for your response.
Thanks & Regards,
Mmadi