AI / Full-Stack Developer Needed to Turn Legal Client Interviewer GPT Into Polished Web Product

We are looking for an experienced AI/full-stack developer to help turn an existing ChatGPT-based legal client interviewer into a polished, easy-to-use product with a secure backend. We currently have a working custom GPT prototype that conducts bilingual intake interviews for potential immigration/legal claims. The tool asks clients about their experience, gathers key facts, and is intended to help attorneys review and prioritize cases more efficiently. The next step is to build this into a more professional system that is simple for clients to use, especially Spanish-speaking users with varying literacy levels, and useful for attorneys/staff on the backend. What We Need Built We are open to the best technical approach, but the product should include: Client-facing interview interface Spanish-first, with English option Simple, warm, low-friction user experience Mobile-friendly Clear intro/disclaimers Step-by-step conversational interview Ability to save progress if possible AI interview logic Uses the existing GPT/interview flow as the starting point Asks follow-up questions based on user responses Avoids giving legal advice Produces a structured summary for attorney review Flags important facts, missing information, and possible priority cases Backend / admin system Stores interview transcripts and structured summaries Allows staff/attorneys to review cases Status tracking for each person Search/filter capability Export to Airtable, Google Sheets, SharePoint, or another practical backend Secure handling of sensitive personal information Document upload capability Let users upload relevant documents Associate uploaded files with the correct client/interview Ideally organize files in a backend folder or database record Polished deployment Public-facing landing page Easy link to send by SMS/email Reliable hosting Basic analytics Clear documentation so our team can operate it Important Requirements The system will be used by potential clients, many of whom may be Spanish-speaking and not technically sophisticated. The user experience must be extremely simple, respectful, and accessible. Because the system will collect sensitive legal and personal information, we need someone who understands privacy, security, and responsible AI design. The tool must not provide legal advice or promise any outcome. It is only for information gathering and attorney review. Possible Tech Stack We are open to recommendations. Possible approaches could include: Custom web app using React / Next.js OpenAI API or similar LLM backend Supabase, Firebase, Airtable, Google Sheets, or SharePoint backend Voiceflow or another conversational AI builder if appropriate Secure file storage Admin dashboard We care more about a practical, reliable product than a complicated architecture. Ideal Candidate You should have experience with: Building AI chat/interview products OpenAI API or similar LLM tools Full-stack web development Backend/database setup Simple, mobile-friendly UX Handling sensitive user data Spanish-language or bilingual products is a plus Legal tech, immigration, intake, health care, or nonprofit experience is a plus Deliverables Please include in your proposal how you would approach: Reviewing the existing custom GPT prototype Recommending the best product architecture Building the client interview interface Connecting it to a backend/admin system Handling transcripts, structured summaries, and document uploads Ensuring privacy/security Estimated timeline and cost This could start as a fixed-price MVP project, with potential for ongoing work after the first version is deployed.