Develop and maintain programs related to the order processing unit, including processes and content such as orders, invoices, reconciliation statements, suppliers, and reverse debits. (https://www.kkday.com/) • Used Tech Stack java, Spring Boot, Redis, PostgreSQL, Docker, RabbitMQ • Achievements 1. Optimized certain APIs to significantly reduce response time by over 70%. 2. Planned and structured new projects using innovative solutions not previously considered. 3. Quickly grasped system architecture and business logic, and conducted knowledge- sharing sessions to disseminate insights to all team members.

Develop and maintain the backend of the cryptocurrency data analysis platform Candlestick (https://www.candlestick.io/), as well as related programs and systems. • Used Tech Stack java, Spring Boot, Redis, PostgreSQL, Docker, Elastic Search, GCS, PubSub • Achievements 1. The backend API was independently developed by one person from scratch, including system architecture and database planning, and developed features such as the user system, integration of multiple payment gateways, GCS (Google Cloud Storage), PubSub (Publish-Subscribe messaging model), Twitter, Telegram, and Web Notification. 2. Enable the system to switch flexibly among multiple blockchains and effectively reduce the development cost of new blockchains in large quantities. 3. Develop and maintain ETL (Extract, Transform, Load) to perform data cleaning and processing. 4. Effectively communicate and assist in quickly resolving data-related issues.

Managed a team of five people to facilitate effective communication between departments. Developed the BoxTradeX cryptocurrency exchange website (https://www.boxtradex.io) and app (https://boxtradex.page.link/63fF). • Used Tech Stack java, Spring Boot, MyBatis, Redis, MySQL, Docker, RabbitMQ, Flutter, Vue, Go • Achievements 1. Single-handedly responsible for product and management backend, frontend, and app development, including trading systems, payment gateway integration, grid robots, and dollar-cost averaging features. 2. Independently developed a market-making bot, which integrates the order books of major exchanges to provide the most accurate market-making quotes for various trading pairs. 3. Developed a capital level system that adjusts the capital level of the market-making strategy based on the profit and loss and performs arbitrage trading based on the price difference. The system was tested under the same conditions as the production environment for two months and generated a profit equivalent to $100,000 USD.

Design, requirement gathering, and development of various project systems, including programming, algorithm design, stress testing, data processing, data prediction, and running mathematical models. • Used Tech Stack Python, C#, .ASP.NET, .NET MVC, .NET core, WebForm, Go, SQL, React • Achievements 1. Discussion of project requirements, design, and front-end and back-end development of various projects, including water conservancy systems, stock trading automation systems, and Sub-brokerage systems. 2. In a technology energy project, data cleaning and organizing are carried out to predict electricity consumption and temperature and humidity using ARIMA.

Delivering lectures, explaining concepts, solving problems, answering questions, grading papers, and proctoring exams in front of the class. • Subject Calculus, Advanced Calculus, Analysis, Linear Algebra, Statistics, Discrete Mathematics, Complex Analysis.

Develop and maintain e-commerce platform, travel booking system, management backend, as well as backend data processing and batch files. • Used Tech Stack java, Spring Boot, Spring Batch, Redis, MsSQL, Angular • Achievements 1. Building a travel booking website from scratch and integrating it with ENA, then successfully operating it and generating profits. Additionally, integrating and customizing a map search for hotels. 2. Using lambda to effectively streamline a large amount of code.

Developing the front-end and back-end of the new terminal system project for Taipei Fubon Bank. • Used Tech Stack java, Spring, Angular, SQL Server