Dimas Guimarães

At Doximity, I build production AI-powered applications with React, Next.js, Python, FastAPI, PostgreSQL, Redis, and AWS. I create LLM and RAG workflows using OpenAI, Anthropic, LangChain, LangGraph, embeddings, vector databases, structured outputs, and tool calling.

I built document and knowledge-processing pipelines for PDFs, spreadsheets, structured data, and large internal datasets, reducing manual processing by approximately 97%. I also design REST and WebSocket APIs supporting 200K+ to millions of monthly requests.

Previously at Highspot and Render, I owned SaaS, e-commerce, mobile, backend, cloud, and data-intensive product work. I delivered marketplace, payments, subscriptions, search, React Native, real-time, and third-party integration capabilities across customer-facing products.

I started at Stefanini LATAM building frontend applications, backend APIs, databases, integrations, and deployment workflows. Across nine years, I've grown from feature delivery to owning architecture, technical planning, and production systems end to end.