Full-Stack Developer (Node.js + AI/RAG)

I’m currently looking for an experienced Full-Stack Developer to help me continue and complete an existing project for one of my clients. I’m a developer myself, and the project is already in progress with the main structure/codebase ready. However, because of my current workload and other commitments, I’m not able to give this project the time it needs. So, I’m looking for someone experienced who can take over the remaining development work and help bring it to completion. What I need help with: Node.js RAG Implementation LangChain LLM Integration CRM Integration Payment Gateway API & Backend Development The ideal person I’m not looking for someone who has only watched tutorials or experimented with AI. I’m looking for someone who has real hands-on experience with RAG, LangChain, LLM APIs, and backend integrations, and can understand an existing codebase and continue development without needing everything explained from scratch. Since I’m a developer myself, I can provide the existing codebase, project context, requirements, and technical direction when needed. I mainly need someone who can take ownership of the implementation and move the project forward. Before applying Please share: Your GitHub / portfolio Relevant RAG + LangChain projects Your experience with LLM integrations Any CRM integrations you've worked on Payment gateway experience Your availability Your hourly or project-based rate If you have actually built production-level RAG/LLM applications, I’d love to hear from you.