WordPress Developer Needed to Extend GiveWP (Custom Tip Add-On)

We are a nonprofit organization using the GiveWP donation plugin on WordPress. We need a small custom add-on that adds an optional “Tip” field to the donation form and includes the tip amount in the final total charged to the donor.

This is a simple and focused task, ideal for someone experienced with WordPress plugin development and PHP.

What We Need:
Add an optional “Tip One Palestine” custom amount field to GiveWP forms
The tip amount must be added to the donation total and processed in the same transaction

Save both values inside GiveWP donation meta:
Main donation amount
Tip amount

Tip must appear in:
The front-end donation form
Donation details in WP admin
Receipt/confirmation page
Must be created as a standalone plugin/add-on
Do not modify GiveWP core files — must be update-safe

Technical Requirements:
Strong WordPress plugin development skills
Experience with GiveWP hooks, filters, form fields, and donation meta
Clean, maintainable code that works with updates
Stripe/PayPal compatibility (using GiveWP’s existing processing)

Deliverables:

A working GiveWP extension plugin (zip file)
Installation + usage instructions
Brief notes on the code
Fully functioning on our live site

Please only bid if you fully understand GiveWP structure and can complete within the budget.