Fullstack Engineer at an AI voice company
- Building AI agent and voice products end to end, from the model layer to the user interface.
Tokyo, Japan · AI Agents · Voice · Web
Hello There.
I'm Calvin (Kal), a fullstack engineer in Tokyo. I build AI agents, speech systems, and fast web apps.
Experience
Speech Team Lead at an ad-tech company
- Led the team building low-latency conversational agents for enterprise partners.
- Took speech-to-text pipelines and transcription systems from prototype to production scale.
Software Engineer at a social hiring platform
- Built high-performance enterprise SaaS interfaces with Next.js and Rails.
- Architected a loyalty point system and ran data migrations with zero downtime.
Software Engineer at a telecom company
- Led a small team to deliver an internal career platform that won a company-wide award.
- Tuned query performance across a distributed database.
Software Engineer at a fintech startup
- Built Go and Python microservices that parsed and analyzed bank statements.
- Rebuilt the testing infrastructure, cutting run time and memory usage.
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
Realtime raid finder for Granblue Fantasy, written in Go. Delivers high volumes of raid signals in under a second.
View on GitHubhenkaku
Small JS library that converts strings between full-width and half-width characters.
View on GitHubguru-pu
Discord bot that assigns server roles automatically.
View on GitHubakaina
Computer vision model that counts Magikarp in a YouTube live stream.
View on GitHubSkills
Languages
CantoneseMandarinEnglishJapanese
Technical
TypeScriptJavaScriptPythonGoRubyReactNext.jsPyTorchLLM/GenAI