Hitachi Rail — Intermediate Software Analyst JUN 2024 - CURRENT ⋅ Permanent Full-time

(Internal transfer from Thales)

Thales — Intermediate Software Analyst FEB 2024 - JUN 2024 ⋅ Permanent Full-time

Core developer for the latest web frontend for ATS software, incorporating new features and graphics to enhance train operator experience utilizing web technologies and frameworks like Typescript, StencilJS Web components
Fast implementation of projects, from frontend inception to adoption in clients production environment in less than three quarters in a highly regulated environment
Mentored and supported junior engineers and interns, providing guidance on best practices, code reviews, and technical problem-solving.
Focused on improving their C++/C# train signaling software on projects like Skytrain, Muni (SFMTA), KL Kelena Jaya Line etc. implementing new features and fixing bugs
Implemented dotnet tool to bridge ClearQuest and Jira, improving workflow efficiency and encouraging the migration to modern tooling for whole organization
Worked on experimental Linux C++ driven data aggregation platform for next-generation train automation, implementing new modules and fixing bugs

Developed high speed fiber optic switches testing and quality control software using C++ (.NET, MFC)
Helped manage deployment of quality control software which runs on a set of computers connected to a switch at the production line
Implemented unit testing on quality control software on top of integration tests.
Implemented new CI pipelines with Docker (Bitbucket Pipelines) on flagship codebase used to test, verify and deploy builds
C++/PHP codebase migration of 20 year old legacy code from PowerPC to ARM running embedded linux

Deployed and administered Kotlin Spring server through Docker for KPE Elderly Home
Designed RPi based help button system electronics with IO expander for KPE Elderly Home
The system collects and processes button inputs from the elderly and sends it to the server for prioritization and notification of caretakers

Developed Kotlin based data collection server using Spring, InfluxDB, Grafana, Docker
C++ firmware on STM32 and RPi collects data from sensors such as battery voltage and current
Designed high voltage backup power supply monitoring system hardware using STM32, RPi
The data is then sent to the data collection server through common API then processed and displayed on the dashboard where it is processed via AI for predictive maintenance

Developed mixed Java/Kotlin based API server using Spring, Docker
Developed android bluetooth controller app for IOT robot
Designed virtual assistant IOT robot electronics with STM32 core
The robot is designed to follow the user around on a set of tracks while interacting with the user, interaction is mainly API driven. The user can also use the controller app to manually control the movement of the robot as desired.

Smart home device systems testing, includes software (C and C++) and hardware debugging (Oscilloscopes and other test equipment)

Skills

Programming Languages: Kotlin, Java, C, C++, C#, Python, SQL, Bash, Typescript
Frameworks: Spring, Sikuli, JavaFX, Android, Dotnet, StencilJS, Pixi.JS
Tooling: Git, Docker, Docker Compose, GitHub Actions, Appveyor, Bitbucket Pipelines, Grafana, AWS, Linux, Node
CAD: FreeCad, KiCad
Spoken Languages: English, Cantonese, Mandarin

Projects

WAI2K is a sample program in Kotlin that utilizes CVAuto as an automation engine and supplements it with AI models such as SuperGlue/SuperPoint/YoloV3 to locate elements and drive game decisions.
CI/CD is done through Github Actions and deployed/distributed through S3 storage to users
Currently migrating from JavaFX based UI to Vue.JS
Live worldwide usage statistics @ https://yuu.waicool20.com/stats/wai2k

CVAuto is a Java/Kotlin based cross platform automation library providing automation options for desktop and android with more engines coming, it provides an easy API to utilize template matching to locate and manipulate on screen elements

Self contained browser that integrates Sikuli-esque api for automation, powered by C++ Qt toolkit and offers a Java/Kotlin friendly API via Java Native Interface
Enables visual based automation for web applications which allows testing for rendered components

EDUCATION

Bachelors of Electronic Engineering SEP 2016 - NOV 2021