Build & Extend Our AI Platform V1 (Next.js, NodeJs/NestJS, RAG & LLM Agents)

We are looking for an experienced full-stack developer to help build and extend the first version of our AI-powered platform. The project specifications, initial architecture, and React UI components are already prepared. We need someone who can work with the existing codebase, complete backend development, connect frontend components, and implement the core AI functionalities. The platform is built around Next.js, NestJS, Node.js, and TypeScript. A major part of the development involves implementing Retrieval-Augmented Generation (RAG) pipelines, LLM integrations, AI agents, multi-agent orchestration, vector databases, embeddings, and context-aware AI workflows. You will work with OpenAI and Claude APIs, function calling, prompt engineering, structured outputs, and automated agent execution. The role also involves designing scalable backend services, developing REST APIs, integrating third-party services, optimizing database queries, and managing PostgreSQL, Redis, and Prisma. On the infrastructure side, we use AWS services including EC2, S3, Lambda, IAM, and CloudWatch, along with Docker, GitHub Actions, and CI/CD pipelines for automated testing and deployment. We are looking for someone with hands-on experience building production-ready AI applications who can understand existing specifications, make sound architectural decisions, troubleshoot complex issues, and deliver clean, maintainable, and scalable code. Experience with SaaS platforms, LLM-based products, and deploying AI systems in production environments is highly preferred.