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Projects

Selected case studies across frontend architecture, mobile engineering and backend reliability.

Each case is framed by the engineering constraint, the system boundary, and the outcome it moved.

Case
01
Open Source / AI Engineering / 2026

ArchDrill

1 Case study

Open-source “LeetCode for system design”: problems with hard numeric constraints, a React Flow design canvas, a deterministic load simulator, and BYOK AI grading against hidden rubrics — all running in the browser with no backend.

Problem

Interview-quality feedback usually requires a server, accounts, and stored credentials — friction that kills a practice tool.

Outcome

A serious practice loop — design, simulate, break, get graded — with zero infrastructure and zero telemetry.

Case
02
Frontend Architecture / Performance / 2024

Tela Brasil

1 Case study

Public streaming platform focused on scalable delivery, playback reliability, and frontend performance under peak traffic.

Problem

SSR overloaded the limited frontend infrastructure at around 10,000 concurrent users.

Outcome

Scaled from around 10,000 to over 3 million concurrent users in load testing.

Case
03
Open Source / Developer Tools / 2026

kanren

1 Case study

Plain-text, git-backed kanban where every card is a markdown file. A single Go binary serves a local drag-and-drop board and a CLI that edit the same files, so tasks live as plain text next to your code — git as history and sync, no server, no database, no account.

Problem

Most kanban tools lock tasks inside a server, database, or account, so you cannot version them with your code or edit them offline. A CLI and a web board built separately would inevitably drift and disagree about the same board.

Outcome

A git-native task tracker you own as plain text: edit from the terminal or a live web board interchangeably, sync with git, and keep tasks in the same repo as the work — with zero infrastructure.

Case
04
SEO / Automation / Affiliate / 2023

Offertando

1 Case study

Built a deal aggregation platform with SEO-focused pages and WhatsApp automation for promotion distribution.

Problem

Promotion discovery needed search visibility and fast distribution across owned channels.

Outcome

A compact growth loop connecting SEO inventory with WhatsApp distribution.

Case
05
Mobile / Native SDK Integration / 2024

Safepilot

1 Case study

Led mobile development for a driving behavior app using React Native, Expo and native SDK integration.

Problem

The app needed native telemetry without making product screens depend on platform-specific details.

Outcome

Production-ready mobile application with native integrations and precise telemetry.