Customize WHMCS Cronjob to Send Custom Reminders

We need a coder with experience on WHMCS. We have a custom project management module for WHMCS. You will need to develop a PHP script, which will run as a cron job at a cpanel server. This script will need to send 2 Email templates to our clients, in two different moments, according to a particular “status” of a particular “project” (a value of a field in the project management table). So basically to code the script, you will just need to replicate and customize the lines that WHMCS uses to send Invoice Payment reminders (lines 968 to 1012 of the file [login to view URL]). The logic is almost the same, but instead of searching for Unpaid Invoices, you will be searching for Projects with certain status. The Email templates will be saved on WHMCS Email template section of the admin area, and not in any other place. That way we will be able to use the different language version, to match the client language, set in each client profile. We don’t need any module to be shown on WHMCS admin area. We just need the php scripts, to run as Cpanel cronjobs. You will need to create 3 versions of the script, according to details described in the attached document. Please read carefully the attached document before bidding.