Projects.

2025/04 - Present

Mobile · Fintech

Moniit - Multi-Asset Management App

Multi-Asset Management App

An intelligent asset management application integrating stocks, cryptocurrencies, precious metals, and forex with real-time quotes, automated asset tracking, and portfolio analysis

Backend Development, API Integration

ProgramFreq Team, Yii Chen

15K+: instruments
<10s: quote engine
4: asset classes

Python / FastAPI / PostgreSQL / Redis / WebSocket / iOS / Android

Demo App Store

View Project

Supports real-time quotes for 15,000+ trading instruments
Highly scalable architecture using Factory + Strategy design patterns
Quote engine theoretical processing time < 10 seconds
Integrates four major asset classes: stocks, cryptocurrencies, precious metals, and forex

1 / 5

2025/09

Mobile · iOS

EatSwiper - Discover Restaurants by Swiping

Discover Restaurants by Swiping

A Tinder-style swiping app that helps you decide where to eat. Powered by Google Places for nearby recommendations, with a favorites list and a final-pick roulette.

Responsible for all development work; teammate handled the App Store submission

2 people

Live: on App Store
iOS: shipped 2025
Offline: favorites

Flutter / Dart / iOS / Google Places API / SQLite / Provider

App Store

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Tinder-style swipe UI for quickly filtering restaurants left or right
Integrated with Google Places API for real-time location-based recommendations
Local SQLite favorites list — view your shortlist even offline
Successfully shipped to the iOS App Store (2025/11)

1 / 3

EatSwiper - Discover Restaurants by Swiping — 1

EatSwiper - Discover Restaurants by Swiping — 2

EatSwiper - Discover Restaurants by Swiping — 3

2026/05

Agent Skill · CLI

Promptlingo - English Learning Skill for Claude Code

English Learning Skill for Claude Code

Inspired by Krashen's Comprehensible Input theory, Promptlingo turns your daily Claude Code conversations into CEFR-leveled English learning material, anchoring language practice in real engineering work.

Solo developer (design, implementation, docs)

1 person

A1–C2: CEFR levels
Daily: reports
0: extra runtime

Python / Claude Code / Agent Skill / CLI / LLM

GitHub

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Reads ~/.claude/projects/*.jsonl transcripts and filters out code, paths, and tool I/O noise
Generates a daily report at the configured CEFR level (A1–C2): sentence rewrites, error correction, vocabulary, grammar focus
Maintains a personal vocabulary store (vocab.json) and error-pattern store (patterns.json) to target weak spots over time
Ships as a Claude Code Agent Skill (/promptlingo command) with no extra runtime

Promptlingo - English Learning Skill for Claude Code — 1

2024/01 - 2025/11

Platform · Power grid

Solar PV Operations & Monitoring System

Operations & monitoring platform

A large-scale solar power plant intelligent monitoring platform with multi-tier architecture supporting both large and small sites, providing real-time anomaly detection, intelligent dispatching, and data analysis

Full-stack development, database architecture design

2 people

268MW: capacity
>95%: detection acc.
−30%: ops cost

Python / Flask / MongoDB / Docker

Demo

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Successfully managing a total of 268 MW solar PV capacity across Taiwan
Anomaly detection accuracy > 95%, false positive rate < 5%
Average fault response time reduced from 4 hours to 1 hour
Operations cost reduced by approximately 30%
System availability > 99.5%

1 / 3

Solar PV Operations & Monitoring System — 1

Solar PV Operations & Monitoring System — 2

Solar PV Operations & Monitoring System — 3

2024/06 - 2025/11

Platform · Power grid

EV Charging Station Management System

Charging operations platform

A comprehensive charging station service platform providing end-to-end solutions from electrical design, power application, charger integration to operations management

Full responsibility for frontend and backend design, development, DevOps, and database architecture

1 person

30+: stations
100+: chargers
Multi: brand support

Vue.js / Python / Flask / MongoDB / GCP / IoT

Demo

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Manages 30+ charging stations with 100+ chargers in stable operation
Supports rapid integration of multiple charger brands

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EV Charging Station Management System — 1

EV Charging Station Management System — 2

EV Charging Station Management System — 3

EV Charging Station Management System — 4

EV Charging Station Management System — 5

EV Charging Station Management System — 6

2022/1 - 2025/11

Platform · Power grid

Power Transfer Management Platform

Wheeling management & simulation

A power transfer management platform providing power transfer management, simulation, and planning features

Independent completion of all development including frontend, backend, core business logic algorithms, database architecture, DevOps, and testing

1 person

50×: sim speed-up
4h→1h: fault response
Cloud Run: cost cut

Python / Flask / MongoDB / Docker

Demo

View Project

Optimized Taipower calculation formulas using Pandas vectorization, achieving 50x performance improvement in power transfer simulation while maintaining accuracy.
Implemented Cloud Run and Cloud Tasks to reduce cloud VM rental costs.
Developed a web scraper for Taipower's high-voltage customer service system to provide real-time electricity usage data, modularized for reuse in other projects.