David 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 Jul 18, 2026.

🔹 Profile Summary Senior Fullstack Developer with over 8 years of experience building web platforms, AI-driven tools, and real-time applications. Strong background in both frontend and backend development, with a recent focus on integrating Large Language Models (LLMs), building custom AI chatbots, and deploying GenAI applications. Regularly work with teams to ship features using Next.js, React, Node.js, and Python. Familiar with the full lifecycle—from sketching ideas on a whiteboard to pushing code into production and improving it post-launch. 🔹 Skillset AI/ML: OpenAI API, LangChain, LlamaIndex, Pinecone, RAG pipelines, vector databases Frontend: Next.js, React, TailwindCSS, TypeScript, Redux, Zustand Backend: Node.js, Express.js, NestJS, Python (FastAPI), MongoDB, PostgreSQL, Redis DevOps: Docker, GitHub Actions, Vercel, AWS (EC2, S3, Lambda), GCP Other: WebSockets, REST APIs, GraphQL, OAuth, Firebase, Stripe Integration Tools: Git, Postman, VS Code, Jira, Notion