Hi project owner.
I'm a senior full stack developer. I have over 7 years experience in web development and over 5 years in server administration including WHM/CPANEL.
I have never made the script that you want but I know how to make it. I'm familiar with WHM, Squid server, shell scripting and either PHP or Python. Please note, I bid because I know what need to do, not just keep bid on whatever it is.
I propose to use PHP combine with Shell scripting to handle those task. I will also provide support after development. But not free with module upgrade and additional feature.
Please consider my bid and I hope you want to talk more detail about this project over chat.
Regards,
Teguh