Full-Stack WordPress Developer for AI Platform

up work "I am a mathematics teacher looking to develop an educational platform that generates professional, AI-driven exams. These exams should be available at different difficulty levels (easy, intermediate, and advanced) based on a chosen math topic and offered in multiple languages. Students can take exams online, where the AI will automatically grade them and provide instant feedback. Additionally, the exams can be exported as PDFs (including answer keys) for paper-based use. The website should also function as an archive to store all generated tests. The AI will provide topic-specific explanations tailored to different levels, supported by illustrations and videos (including my own recorded lessons). There must be a dedicated section for uploading and managing these videos. Furthermore, the site will feature a module for conducting live online tutoring sessions. The platform requires a secure login and payment gateway. New users will receive the first 30 minutes for free, followed by a subscription model. The system must track subscription statuses and send automated notifications to customers before their subscription expires or a payment is due