Justin Chu
Building tools for AI and language. Senior engineer at Microsoft working on ONNX. Previously Google [X]. CMU alum.
Projects
web-praat
Browser-based acoustic analysis for phonetics. Spectrogram, formants, pitch tracking, TextGrid editing, Whisper transcription — zero install.
Flightdeck
Multi-agent orchestration platform. Lead/Director/Worker hierarchy with MCP tools, ACP client, and real-time coordination.
ONNX IR
A modern Python IR for ONNX. Designed from scratch for ergonomics, performance, and correctness.
ONNX Script
Authoring ONNX models in Python with a natural syntax. Powering torch.onnx export in PyTorch.
Formants
Real-time vowel visualization app. See your F1/F2 as you speak.
Open Source
pytorch/pytorch
onnx/onnx
onnx/ir-py
microsoft/onnxscript
onnx-safetensors
model-explorer-onnx
github-attention-set
lintrunner-adapters
Talks
torch.onnx APIs and Architecture — Jan 2026
PyTorch Conference 2025
ONNX Meetup 2025
ONNX Meetup 2024