I need a software developer to build a Xero payment plugin

Hi, I am looking to get a quote for some development work. The job would involve creating a payment plugin for Xero similar to [login to view URL] for my company. [login to view URL] We have a product called Fire Open Payments [login to view URL] that allows businesses to accept payments by bank transfer. The API specifications are located here and I can create a test account for you in our Sandbox. [login to view URL] This is a high level of what is needed. 1. Need to be able to setup Fire API keys within the UI 2. Need to be able to accept a webhook response with the status of the payment 3. Need to be able to update the transaction status to AUTHORISED and PAID via webhook as payments are authorised and received. 4. Max number of payments should be set to 1 for each payment request order 5. Should redirect to Xero and request the status of the payment from Fire via Fire's API 6. Ability to test in live and test (sandbox) mode and store different API credentials for both If this is something you could develop would you be able to give me an estimate of how much it would cost? Any questions let me know. Thanks, Colm