DAVID CUELLAR

I’m a full-stack engineer and AI builder who loves turning complex ideas into useful, scalable products. With an MSc in Data Science & AI, I design systems that combine intelligent automation with robust engineering—whether it’s an algorithmic trading engine (BlockBotics.xyz) that explains its own market signals, or an AI-powered collaboration platform (Influencer's Platform) connecting brands with creators.

My expertise spans Next.js/Expo frontends, NestJS/Prisma/PostgreSQL backends, and Python AI workflows with RAG, vector databases, LangChain/LangGraph, and observability. I thrive in the 0→1 stage, where creativity, engineering, and iteration collide to deliver impact quickly.

Beyond AI, I bring blockchain experience: building NFT marketplaces, DeFi apps, and smart contracts with Rust and Solidity across Ethereum, Solana, and Polygon. This mix of AI and Web3 helps me design systems where trust, transparency, and intelligence come together.

I also care deeply about communication and community—mentoring developers, creating docs and courses, and organizing hackathons that turn technical concepts into actionable outcomes.

My expertise includes:

• AI Engineering → LLM apps, RAG pipelines, agentic workflows, prompt design, evaluation frameworks
• Full-Stack Development → Next.js, Expo, NestJS, Prisma, PostgreSQL/SQL, Docker, CI/CD
• Blockchain & Web3 → Smart contracts (Rust, Solidity), NFT marketplaces, DeFi, Ethereum, Solana, Polygon
• Data & Trading Systems → Market-data pipelines, FastAPI services, vector DBs, analytics for strategies
• Developer Relations → Courses, docs, hackathons, and advocacy bridging deep tech and community growth