Gustavo I.

Senior Full-Stack & AI Engineer (12 years) helping startups and SMBs ship scalable web apps and AI features that actually work in production — not lab demos. My sweet spot is well-scoped, high-leverage work: build the system, harden it, then layer in AI where it earns its keep. My stack: TypeScript, Python, React, React Native, and Electron — deployed via Docker and Terraform on GCP and Cloudflare. Production systems I've shipped currently serve ~800K monthly requests across 10+ live properties. What clients hire me for: - Full-stack delivery — Next.js/React + FastAPI/Flask/Node (TypeScript), clean architecture, scalable APIs. - AI integrations — LLM features (Claude/GPT/Gemini), RAG over your data, agents and agent harnesses, automation pipelines, computer-use, computer vision, AR. - "Make it reliable" — auth, billing, CI/CD, Docker, Terraform, Cloudflare/GCP/AWS — deploys cleanly, stays maintainable. Proof of impact: - Built a RAG logistics platform extracting PDF data at 97% accuracy, cutting manual entry 85%. - Introduced AI-driven TDD workflows that lifted delivery velocity 58% with zero regressions. - Production footprint of work I've shipped: ~800K requests, ~20K unique visitors, ~40K threats blocked monthly — across 10+ live properties. ⚡ Special Offer: Right now I'm offering a limited competitive rate to early Upwork clients. Agency-level engineering at freelancer pricing — before my standard rates lock in.