cortar madeira, carregar água
Software engineer from Paraná, Brazil. I build products — not projects. I prefer the discipline of maintaining and evolving systems over selling consultancy hours. I work with Rust, Python, TypeScript, React, Go, and C, and lately I've been deep into AI agents, computational physics, and GPU programming.
But engineering is just one layer. What actually drives me is the raw curiosity — the kind that doesn't respect disciplinary boundaries. On any given Sunday I might be simulating quantum tunneling in OpenGL, memorizing Sanskrit verses with a memory palace, or building a cyberpunk TUI agent just to see if a while loop is all you need.
I study Advaita Vedanta seriously. I've read Nisargadatta, Ramana Maharshi, Vivekananda, the Mandukya Karika. I practice japa, observe the mind in operation, and connect phenomenological insights with neuroscience.
The question that defines me is: why does anything exist at all, and how does it organize itself to the point of looking back and asking that question?
I don't use social media. I make things because I like making things.
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fiscal-rs — High-performance Rust library for Brazilian fiscal documents (NF-e/NFC-e). Complete port of sped-nfe (2.4k+ stars PHP library). 739+ tests, typestate-driven builder, XML-DSig signing, SEFAZ mTLS, FFI-ready. Contributed 370 tests back to sped-nfe, raising coverage from 40% to 86.5%.
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FinOpenPOS — Open-source Point of Sale system with full Brazilian fiscal compliance (NF-e/NFC-e). Multi-tenant, zero-config dev setup with PGlite (in-process Postgres), real-time dashboard, i18n. The TypeScript fiscal engine that preceded fiscal-rs.
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physics-lab — Interactive modern physics simulations: Schrödinger equation, quantum tunneling, double slit interference, EPR entanglement, Bell test (CHSH, S = 2.87), Schwarzschild gravitational lensing with exact geodesic ray tracing. GPU-accelerated, real-time OpenGL/GLSL. Python
agent-42 — Minimal autonomous coding agent. The entire agent is ~70 lines of logic — a while loop, tool use, and a Textual TUI. No frameworks, no magic. The intelligence is in the model, not in the code. Python
MemBot — AI-powered journaling app that organizes and analyzes daily thoughts automatically. TypeScript
PortuScript — A programming language that transpiles Portuguese to JavaScript. Making code accessible for Portuguese speakers. JavaScript
perceptrons — Interactive educational system for learning neural networks through hands-on experimentation. Draw patterns, train models, discover limitations. Python React
Languages Rust · Python · TypeScript · Go · C · C++ · JavaScript · GLSL
Frontend React · Next.js · Tailwind · Textual (TUI)
Backend Node · Supabase · REST · CQRS
AI/ML LLM APIs · Agents · Tool Use · Perceptrons
Fiscal NF-e · NFC-e · SEFAZ · XML-DSig · ICMS · PIS/COFINS
Physics OpenGL · ModernGL · CuPy · Split-Step FFT · RK4
Systems Docker · Arch Linux · Hyprland · ESP32 · Arduino
Advaita Vedanta · Sanskrit · Memory palaces · Quantum mechanics · General relativity · Evangelion · Hard sci-fi · Brazilian music (tropicália, samba de roda, blocos afro) · Geopolitics · Electronics · Contos de fada
aquilo que testemunhou a aceitação da morte não morreu — e nunca morrerá