Rutendo M.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Apr 27, 2026.

⭐ Top Rated Plus ⚡ Senior Full Stack Developer 8+ years | 200+ SaaS apps | AI Developer & AI Engineer | AI Chatbot & AI Agent Expert | AI SaaS & AI Automation I have built 100+ AI Integration endpoints using OpenAI API and Claude API. I have implemented 70+ AI Automation workflows using n8n for AI Chatbot routing, AI Agent orchestration, and Voice AI automation. I’m a Senior Full Stack Developer and AI Developer with 8+ years in Full-Stack Development and 4+ years focused on Artificial Intelligence. As an AI Developer, AI Engineer, and AI Expert, I design, build, and scale AI Chatbot, AI Agent, Voice AI Agent, and AI Automation systems using OpenAI, Claude, RAG, n8n, Python, FastAPI, Node.js, React, Next.js, Supabase, and PostgreSQL. I have delivered 50+ AI-Powered Web Application and AI SaaS projects, including AI Chatbot platforms, AI Agent systems, Voice AI Agent solutions, and AI Automation pipelines. As a Full Stack Developer and Senior Full Stack Engineer, I combine backend engineer architecture with AI Integration and AI Agent Development to build production-ready AI SaaS platforms. I specialize in AI Chatbot Development, AI Agent Development, Voice AI Integration, and RAG-based AI-Powered systems. I work with OpenAI API, OpenAI models, Claude API, Claude models, LangChain, FastAPI, REST API, and n8n to build AI Automation and AI Integration pipelines. ⚡ What I Build (AI-Powered Systems) As an AI Developer and Full Stack Developer, I build AI Chatbot systems that handle 10,000+ conversations per day using OpenAI, Claude, RAG, and n8n automation. These AI Chatbot and AI Agent systems reduce support costs by 40–70% through AI Automation and AI Integration. I design AI Agent platforms that orchestrate multiple AI Agent instances using RAG, OpenAI API, Claude API, LangChain, and n8n. Each AI Agent can manage workflow automation, document processing, Voice AI calls via Twilio API, and backend integration via RESTful API and API Integration. I implement RAG pipelines with vector databases, PostgreSQL, Supabase, and custom backend engineer logic to deliver AI-Powered search accuracy improvements of 30–60%. My RAG architecture combines OpenAI embeddings, Claude reasoning, Python, FastAPI, and AI Integration best practices. I build Voice AI Agent and Voice AI Chatbot systems that process 5,000+ Voice interactions per month using OpenAI, Claude, and Twilio API. These Voice AI Agent systems are AI-Powered, automated via n8n AI Automation workflows, and integrated with CRM, SaaS platforms, and Web Application backends. As a Senior Full Stack Developer and AI Engineer, I build AI SaaS MVP platforms in 4–8 weeks using Next.js, React, Node.js, Python, FastAPI, Supabase, PostgreSQL, Docker, and AWS or Google Cloud Platform. Every AI SaaS system includes AI Integration, AI Automation, AI Agent logic, and AI Chatbot modules. ⚡ What Makes Me Different as an AI Developer & AI Engineer Most developers build a chatbot. I build AI Chatbot ecosystems. Most engineers integrate one API. I design AI Integration architecture across OpenAI, Claude, n8n, RAG, and backend systems. As an AI Developer, AI Engineer, and AI Expert, I focus on: 🔹 AI Chatbot + AI Agent + Voice AI Agent combined architecture 🔹 AI Automation pipelines via n8n (10+ complex n8n workflows per project) 🔹 RAG systems with production-grade backend engineer structure 🔹 AI SaaS platforms with scalable Full-Stack Development 🔹 AI Integration across OpenAI API, Claude API, REST API, and Web Application layers I use OpenAI and Claude in hybrid AI Agent systems to maximize reasoning accuracy and reduce token costs by 20–35%. I design AI-Powered backend systems in Python and FastAPI and AI-Powered frontend interfaces in React and Next.js. As a Full Stack Developer and Senior Full Stack Engineer, I ensure that AI Development is not just a prototype but a scalable AI SaaS product with proper Database Architecture, API Development, Automation, and DevOps. ⚡ My Core Stack for AI Chatbot, AI Agent & AI Automation OpenAI OpenAI API Claude Claude API LangChain RAG n8n Python FastAPI Node.js React Next.js Supabase PostgreSQL REST API API Integration Docker AWS Google Cloud Platform. 🤝 If You’re Ready To 🔹 Build an AI Chatbot that converts 2x better 🔹 Launch an AI Agent platform powered by OpenAI and Claude 🔹 Deploy a Voice AI Agent with full AI Automation 🔹 Create an AI SaaS MVP with scalable Full-Stack Development 🔹 Implement RAG-based AI-Powered knowledge systems 🔹 Automate workflows with n8n AI Automation and AI Integration Then let’s build a production-grade AI-Powered system. As a Senior Full Stack Developer, AI Developer, AI Engineer, and AI Expert, I deliver AI Chatbot, AI Agent, Voice AI Agent, AI SaaS, AI Automation, RAG, OpenAI, Claude, and n8n solutions that move from MVP to scalable AI platform. I am currently available for new AI Development, AI Agent Development, AI Chatbot Development, AI Integration, AI Automation.