Fullstack Engineer at an AI voice company
- Building AI agent and voice products.
Tokyo, Japan AI Agents · Voice · Web
Hello There.
I'm Calvin (Kal) — a fullstack engineer in Tokyo, Japan. I work on AI agents, speech systems, and high-performance web apps.
Experience
Speech Team Lead at an ad-tech company
- Led development of low-latency conversational agents for enterprise partners.
- Built speech-to-text ML pipelines and transcription systems at scale.
Software Engineer at a social hiring platform
- Built high-performance enterprise SaaS interfaces with Next.js and Rails.
- Architected loyalty point system and executed zero-downtime data migrations.
Software Engineer at a telecom company
- Led a team to deliver an award-winning internal career platform.
- Optimized distributed database query performance.
Software Engineer at a fintech startup
- Built Go/Python microservices to analyze bank statements.
- Improved testing infrastructure, cutting time and memory usage significantly.
Education
M.S. in Computer Science (Machine Learning)
Georgia Institute of Technology · 2023 — 2026B.Eng. in Computer Science
The University of Hong Kong · 2017 — 2021Projects
GBFinder Omega
Real-time raid finder for Granblue Fantasy. Written in Go, designed for high volume sub-second message delivery.
View on GitHub →henkaku
JS library to convert strings between full-width and half-width characters.
View on GitHub →guru-pu
Discord bot to auto-assign roles.
View on GitHub →akaina
ML model to count Magikarp in a YouTube live stream.
View on GitHub →Skills
Languages
CantoneseMandarinEnglishJapanese
Technical
TypeScriptJavaScriptPythonGoRubyReactNext.jsPyTorchLLM/GenAI