Technical Books · PDF · English First · Korean and Japanese Editions Available
Two practical books from systems I actually built: Tauri 2 / Rust desktop apps and a production-style financial ML/RL trading system in Python.
No Time — So I Built Six Apps Anyway
A hands-on record of building 4 Tauri 2 desktop apps and 2 Rust TUI apps in evening sessions using an AI agent loop. The book focuses on the request, implementation, verification, and iteration patterns that made the work practical.

What's Inside
HMM Regime Detection · SAC / QR-DQN · Statistical Arbitrage
A production-style financial ML/RL systems book covering a running architecture: HMM regime classification, Kalman spread modeling, SAC and QR-DQN agents, CVaR-aware risk control, FastAPI serving, MLflow tracking, and Rust TUI monitoring.

What's Inside
Choose the English, Korean, or Japanese edition and complete checkout through Gumroad.
The PDF download link is delivered immediately after purchase.
When the book is updated, you can access the latest version from the same product page.
Author
Senior software engineer focused on production ML systems, financial time-series engineering, and AI-assisted software development. I build the systems behind these books myself: Tauri 2 / Rust desktop apps, Python trading infrastructure, HMM regime detection, RL experiments, FastAPI model serving, and public technical writing around what actually works.