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David ChuangDC
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David Chuang

@davidchuang

I build production AI systems for advertising, restaurant analytics, search, and recommendations at massive scale.

United States
Message

I've led production AI systems at Cognitiv, Brightloom, and Zulily, spanning real-time advertising, restaurant analytics, search, personalization, and recommendations. At Cognitiv, I deployed an AI-powered DSP processing 12B+ daily bid requests with 99.99% availability and a 20 ms online decision-latency target.

I built Cognitiv's agentic orchestration layer with LangGraph and MCP, along with ContextGPT multimodal pipelines and AudienceGPT embeddings that improved purchase-intent prediction accuracy by 22%. My CTR and conversion models improved click prediction by 19% and conversion prediction by 24%, while bid optimization increased return on ad spend by 31%.

At Brightloom, I led an AI/data team building an LLM-powered restaurant analytics assistant that lets users query transactions, diner behavior, campaign performance, and segmentation data in natural language. I also built multimodal semantic-search pipelines across more than 4 million menu images and promotional creatives, and reduced cloud infrastructure spend by 30%+.

Previously at Zulily, I delivered recommendation and ranking services for 15M+ daily users and 10M+ daily search requests. I hold a Ph.D. in Electrical Engineering and Computer Science from the University of Washington and bring deep experience in LLMs, agentic AI, computer vision, distributed machine learning, and production MLOps.

Experience

Work history, roles, and key accomplishments

CO
Current

Lead AI/ML Engineer

Cognitiv

Sep 2024 - Present (1 year 11 months)

Led the production deployment of Cognitiv's AI-powered DSP on AWS, processing over 12B bid requests per day with 99.99% availability. Built agentic AI orchestration and multimodal contextual intelligence pipelines, improving purchase intent prediction accuracy by 22% and increasing return on ad spend by 31%.

Education

Degrees, certifications, and relevant coursework

University of Washington logoUW

University of Washington

Doctor of Philosophy, Electrical Engineering and Computer Science

2010 - 2015

Ph.D. in Electrical Engineering and Computer Science from the University of Washington, completed in 2015.

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