About me

Software engineer working on product and autonomous workflows.

I’m João (pronounced /ʒoão/, or “Joh-aon” a software engineer who enjoys product work and autonomous workflows.

I like getting hands-on with different programming languages and paradigms, especially Python, JavaScript, Go, Rust, and Elixir. I’ve worked on architecture tools, legacy systems, and data pipelines.

I also enjoy tutoring: I was a cryptography and database tutor in college, and later volunteered teaching programming for kids and seniors.

• Main focus: Backend systems and APIs
• Language stack: Python, JavaScript, Go, Rust, Elixir
• Community: Tutoring and volunteer programming classes

Projects

Main projects

All projects

multi-rust

My distributed Rust book, from threads to distributed nodes, published as an online guide.

Role: Wrote and organized the learning path, examples, and practical explanations.

Tech: Rust, Distributed Systems, Documentation

posthog-django

A Django integration package for simpler PostHog instrumentation and onboarding.

Role: Designed and maintained package APIs with focus on clear setup and developer experience.

Tech: Python, Django, PostHog

Tray-Transcriber

A voice transcription project with attention to processing reliability and user flow.

Role: Worked across ingestion, orchestration, and product implementation details.

Tech: Electron, Typescript, Whisper, AI APIs, OCR

pixel-studio

Retro Pixel Studio pairs a React + Vite front end with a Rust/WASM remapper to let artists drag/drop sprites, load palettes, flip between distance metrics, and see before/after comparisons.

Role: Owned the browser experience and wasm integration, including palette parsing, live chips and rankings, split-view compare, and auto worker mode for large inputs.

Tech: React, Vite, Rust, WebAssembly, PNG/JPEG decoding, Worker APIs