Full-Stack AI Developer & Ai Automations Expert Needed — Build AI Marketing SaaS MVP.

I am looking for an experienced Full-Stack AI Developer to help build the MVP of a new AI-powered SaaS platform. The ideal developer should be comfortable working across the full product, including the frontend, backend, database, APIs, AI/LLM integrations, and deployment. The goal is to build a real working SaaS MVP, not just a basic AI chatbot or simple API wrapper. I want to start with a focused version of the product, test it with real users, collect feedback, and continue improving it over time. Preferred Technology Stack The preferred stack is: React.js / Next.js Node.js Python / FastAPI PostgreSQL or another suitable database AI/LLM APIs Vector databases and RAG where needed REST APIs Authentication and user management Cloud deployment I am open to recommendations if you believe a different approach would better fit the MVP. What You'll Help Build Depending on the final product requirements, the work may include: Building the frontend using React.js or Next.js Developing backend APIs with Node.js and/or Python Database design and user management Authentication and role-based access AI/LLM integrations AI chatbots or AI agents RAG and document-based AI systems where required Third-party API integrations Automation workflows Admin dashboard SaaS subscription and payment integration Cloud deployment and production setup AI Development The platform will use existing AI models and APIs rather than training a model from scratch. Experience with the following is valuable: OpenAI APIs Claude / Anthropic Google Gemini LangChain or similar frameworks AI agents RAG systems Vector databases Prompt workflows Function calling and tool integrations AI automation The architecture should allow different AI providers or models to be added or changed later without rebuilding the whole platform. What I'm Looking For I'm looking for someone who can understand a product idea and help turn it into a working MVP. You should have experience with: Full-stack SaaS development React.js and Next.js Node.js backend development Python and FastAPI AI/LLM API integrations Database design Authentication and user accounts Third-party API integrations Multi-user SaaS platforms Cloud deployment Secure API and credential handling Experience with AI agents, RAG systems, automation, and AI-powered SaaS products is a big plus. Important I am not looking to build every possible feature in the first version. The goal is to define a focused MVP, build the most important features first, test it with real users, and then continue development based on feedback. This can become a long-term collaboration for the right developer. When Applying Please include: Examples of SaaS products you have personally built. Examples of AI/LLM applications or integrations you have worked on. Your experience with React.js, Next.js, Node.js, Python, and FastAPI. Your recommended technology stack for this MVP. How you would approach structuring the MVP. Your estimated timeline. Your estimated cost or hourly rate. Your availability to start. Please share only relevant work that you have personally contributed to. I’m looking for someone who can take ownership of the development work and potentially continue as a long-term development partner as the product grows.