Custom LLM Automation Workflow Build

We want to build a centralized AI knowledge and automation system for our company, integrating ChatGPT, Claude, existing connectors, team data, and specialized AI tools. Key Requirements: - One shared, continuously updated company AI memory. - Secure, role-based access for all employees. - Integration with company files, emails, cloud storage, and approved work devices. - Automated multi-agent workflows for PPT creation, image/video generation, research, analysis, and business operations. - Custom AI skills, instructions, and workflows reflecting our company's working style. - One unified interface for the entire team. - Complete employee-wise account setup, hands-on training, troubleshooting, documentation, and final handover. We need someone who can design, implement, integrate, and train our team, not just provide consultation. Please share your relevant experience, proposed technology stack, estimated timeline, and project cost.