As a highly proficient and experienced PHP developer with a keen eye for design, I believe I'm a perfect match for your reseller website design project. Over the years, I have built numerous e-commerce and reseller platforms that employed automated systems similar to what you require. My extensive hands-on experience with WHM/WHMCS allows me to navigate effortlessly through its intricacies, ensuring smooth product handling, pricing setup, billing, and all other functionalities you've stipulated.
Furthermore, my grasp on HTML, CSS, JavaScript & PHP is extremely solid. Not only can I create visually compelling front-end designs for your website but also execute seamless back-end integrations. Automating tasks like client onboarding, domain registration, email piping, cron jobs set up among others will be as effortless as possible.
Finally, my expertise in cloud technologies is particularly relevant to this project. Through optimised daily backup settings and cPanel server account creation with WHM API integration among others, I can guarantee maximum security and reliability while ensuring SSL certificates are promptly installed whenever necessary. Rest assured every feature you want in your platform will come to life professionally and efficiently under my supervision. Let's start revolutionising reseller hosting!