● Back-End Development: - Managed robust back-end services, ensuring feature support. - Authored development docs and implemented unit tests for code quality. - Led design of new features aligned with project objectives. - Set clear feature acceptance criteria and designed thorough test cases. ● Locomotive Asset Management (Taiwan Railway, TC4.0): - Developed APIs for train data, onboard systems, and real-time dispatch. - Engineered jobs for daily train schedules and real-time status. - Used technologies: Python, Redis (Pub/Sub), Postgres, TimescaleDB. ● SafeRide Product: - Developed APIs for real-time/historical data. - Led refactoring of SafeRide video functionality, managing VoD operations: · Designed a progress bar for chunked transfer. · Managed digital watchdog operations and VoD tools. · Enhanced error handling and utilized FFmpeg for missing video segments. - Optimized Report Service: Achieved a 91.5% reduction in data processing time for monthly reports, efficiently handling 500K records. - Researched NVR systems and RTSP protocol for IP camera compatibility. - Used technologies: Python, Golang, Redis, Postgres, TimescaleDB, Kafka. ● Development of SafeART (Terminal 3) Product: - Design the service architecture of the central control center and database - Utilized technologies such as Python(GraphQL), Postgres, TimescaleDB. ● Team Collaboration: - Introduced Computer Networks concepts to the team. - Conducted code reviews and designed End-to-End (E2E) tests. - Authored concise code documentation for maintainability. ● Work with Scrum.

Responsible for the construction of the Data Service and the development and maintenance of the cloud system, "Nebula". ● Nebula: - A network management system that integrates diverse devices including Wi-Fi access points, Ethernet switches, and security gateways. It consolidates these into a single cloud platform, offering a comprehensive solution for managing user network infrastructure. - Developed using Python 3.6 and the Flask application framework. - Designed and developed MongoDB schema and RESTful APIs. - Managed Nebula AP and Gateway Flex-related functionalities and configuration push settings. ● Data Service: - A data processing system designed to manage the data from Nebula devices. Due to the vast data volume associated with Nebula, Cassandra was employed as the back-end database system. - Technologies utilized include Rust and Cassandra.

● Autotest - Responsible for assisting P-QA in AP system testing - Main test items: When the user connects to the Internet via Wi-Fi access points, confirm whether the system can correctly identify the currently opened application. - Develop an automated test to simulate the behavior of users browsing the web and using the APP - Web: Python with Selenium - Mobile: Python with Appium