Yuhong Sun - Co-Founder at Onyx

Yuhong Sun

Co-Founder at Onyx

San Francisco, California, United States

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Summary

🤩

Rockstar

🎓

Top School

Yuhong Sun is a product-minded engineer and entrepreneur with 8 years of experience building backend systems and applied ML for search and conversational AI. As Co-Founder of Onyx in San Francisco, he leads development of an open-source GenAI chat platform that securely connects to enterprise knowledge sources like Google Drive, Slack, Confluence, Notion, and GitHub. Previously at Alation he designed NL-to-SQL transformers and hybrid vector+keyword search, and at Cisco he shipped backend APIs and NLP automation for support workflows. His open-source work includes implementing streaming model outputs for team-focused Gen-AI chat, improving real-time UX for model responses. Comfortable across production backends and ML model integrations, he combines hands-on Python engineering with product instincts for searchable, team-aware AI.

8 years of coding experience

4 years of employment as a software developer

University of California, San Diego

English, French, Chinese

Github Skills (11)

backend10

python10

back-end-development10

http-request10

data-integration9

integrations9

apidoc9

openai-api9

integrate9

api9

json8

Programming languages (4)

MDXJavaCPython

Github contributions (5)

onyx-dot-app/onyx

Apr 2023 - Apr 2025

Gen-AI Chat for Teams - Think ChatGPT if it had access to your team's unique knowledge.

Role in this project:

Back-end Developer

Contributions:932 reviews, 1609 PRs, 1880 pushes in 1 year 11 months

Contributions summary:Yuhong's commits focused on implementing the streaming model output feature within the backend system. This included modifications to simulate the frontend, defining new methods for streaming within the question answering model, and integrating the streaming functionality into the search backend. The user primarily worked with Python scripts and related backend components to introduce this feature. The contributions indicate a focus on improving the interaction with the model responses for enhanced user experience.

ai-chatchatgptenterprise-searchgen-aiinformation-retrieval

onyx-dot-app/documentation

Jul 2023 - Mar 2025

Contributions:24 reviews, 131 PRs, 100 pushes in 1 year 8 months

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