Samuel E.

I build complete AI-enabled web products: Vue or Angular interfaces, Python/FastAPI backends, RAG pipelines, databases, and cloud deployment. If your product crosses frontend, backend, and AI, I can own the connections between them instead of passing work between three developers. Top Rated on Upwork | 100% Job Success | $30K+ earned | 3,596 hours delivered A few examples of my work: • Built and deployed a RAG-based learning platform with document ingestion, embeddings, retrieval, configurable prompts, automated tests, and AWS deployment. • Built AI character systems for live audiences using LLMs, LangChain, FAISS, document reranking, provider switching, and text-to-speech. • Developed Vue/Vuetify and Angular frontends for learning, operations, and AI products, including an offline-first application for unreliable network conditions. • Built Python and C#/.NET APIs, automation workflows, database integrations, trading systems, and blockchain-based transaction flows. • Reduced an API workflow from about 30 seconds to under 300 milliseconds and worked on a platform load-tested for 10,000 concurrent users. I’m usually brought in for one of four situations: • You need an AI feature added to an existing web product. • You need a RAG or agent system that is tested, evaluated, and ready for production. • Your Python backend is slow, unreliable, or difficult to maintain. • You want one engineer to take a feature from the UI through the API, database, testing, and deployment. I work primarily with Python, FastAPI, Django, C#/.NET, Vue.js, Vuetify, Angular, TypeScript, PostgreSQL, Redis, Docker, AWS, GCP, LangChain, FAISS, and Qdrant. I communicate clearly, ask questions before making expensive assumptions, and keep changes easy for another engineer to understand. Send me the problem, your current stack, and what “done” should look like. I’ll tell you where I can help and where I can’t.