Lucas Jo
Head Of Technology at Good Atlas
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolLucas Jo is a Head of Technology with eight years of experience building production-grade voice AI and speech systems, currently leading LLM-powered VoIP agent and real-time WebRTC dialogue products at Atlas Labs. He combines deep signal-processing roots (M.S. in voice signal processing) with hands-on ML engineering—fine-tuning Whisper/Wav2Vec models to raise call-domain STT accuracy for Korean and Japanese and deploying low-latency inference on Triton/TensorRT. Lucas designs scalable VoIP and STT architectures (AWS EKS, gRPC, Pipecat, LangGraph, Twilio) that handle interruptions, long pauses, and sensitivity control at large traffic volumes. His background in audio hardware and DSP at RADSONE and EXTEGER gives him a practical edge in solving speech quality and latency trade-offs that typical ML practitioners overlook. He has a track record of translating research techniques into reliable products and open-source contributions (e.g., Kaldi Zeroth Korean recipe) that improved real-world ASR performance.
8 years of coding experience
7 years of employment as a software developer
Master of Science (M.S.), Voice signal processing, Master of Science (M.S.), Voice signal processing at 서울대학교 (Seoul National University)Bachelor of Applied Science - BASc, Electrical and Electronics Engineering, Bachelor of Applied Science - BASc, Electrical and Electronics Engineering at Seoul National University
English, Korean
Github Skills (52)
speech-to-text10
webcam10
sctp10
speaker-verification10
signaling10
zeroth10
voip10
srtp10
location10
audio10
kaldi10
live-video10
api10
speech10
asr10
Programming languages (8)
Github contributions (5)
goodatlas/zeroth
Feb 2018 - Jul 2019
Kaldi-based Korean ASR (한국어 음성인식) open-source project
Contributions:70 commits, 1 PR, 55 pushes in 1 year 6 months
nlpkaldiasrctcspeaker-verification
jty016/kaldi
Mar 2018 - Sep 2020
This is now the official location of the Kaldi project.
Contributions:14 pushes, 4 branches in 2 years 6 months
kaldilocation
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