Project: Build High-Quality GPT-4-Turbo AI Chat with RAG Integration for Website -DisputesResolutions.com Description: We need an experienced AI developer to design, build, and integrate a full-featured GPT-4-Turbo chat system directly into our website https://disputesresolutions.com. The chat will replace the “Book a free consultation” box in the hero section and must deliver a premium, human-like experience — equivalent in quality to ChatGPT — but with custom knowledge, tone, and logic specific to our DisputesResolutions business. System Requirements: • Integration with OpenAI GPT-4-Turbo API • RAG (Retrieval-Augmented Generation) knowledge system trained on our website content and documents we supply • Natural, intelligent conversation flow that maintains full context • Conversion-oriented logic to guide visitors toward booking consultations or submitting enquiries • Built-in compliance guardrails (information-only — no legal advice) • Analytics event logging (chat start, lead created, booking completed) • Seamless embedding in the hero-right contact box (same size and position) • Optimized for both desktop and mobile layouts We will provide: • A full developer specification pack (system prompt, RAG structure, API schema, analytics wiring, privacy and compliance rules, UI/UX guide). • All source content for training and testing. You will deliver: • Full implementation, integration, and testing to our specification. • Working deployment on the live site with proof of functionality. • Clean, documented code and a short handover note. Skills Required: • Expert experience with OpenAI GPT-4-Turbo via API • Proven RAG implementation (vector database such as Pinecone / pgvector / FAISS) • Strong front-end and back-end ability (JavaScript / TypeScript, React / Next.js, Node.js) • API design (function calling, authentication, security) • Chat UI / widget development (embed or iframe) • Prompt engineering and compliance logic • Google Tag / GA4 event wiring • Excellent English communication and attention to detail Important: Applicants must show previous GPT-4 or RAG-based chat systems they have built (screenshots or live links preferred). Only highly experienced developers will be considered. This is not a basic chatbot job — we require enterprise-grade quality and reliability. Preference: Developers who already have a working GPT-4 / RAG chat framework that can be adapted to our specification are strongly preferred. We are not seeking a from-scratch build — efficiency, experience, and proven codebases are key.