Build a learning-management + ATS + payment + blog

I am seeking a proficient web developer or a dedicated team to create a comprehensive website that integrates a learning management system (LMS), applicant tracking system (ATS), payment processing, and a blog. The site must facilitate user registration, course management, and secure payment transactions while ensuring robust data protection. Key features include user role management, an admin dashboard, and a responsive design for both mobile and desktop platforms. Preferred technologies include either a well-supported CMS with plugins or a custom web application for enhanced scalability. Please provide relevant portfolio examples, estimated development timelines, and proposed deliverables.