Skip to main content
Donghua XuDX
Open to opportunities

Donghua Xu

@donghuaxu

I build large-scale retrieval, indexing, and AI-agent systems for high-impact platforms.

United States
Message

At Google, I oversee Display Ads retrieval and indexing infrastructure supporting tens of billions of dollars in annual revenue. I’ve led unified matching, ad-matching migration, and indexing-pipeline initiatives that improved onboarding speed, reliability, traceability, scalability, and ad freshness.

I previously built search retrieval, indexing, normalization, and ranking systems at Ask.com, and delivered vendor-negotiation features and contract-renewal tools at Amazon. As Tickreel’s co-founder, I built real-time social data systems, ranking signals, sentiment-analysis infrastructure, and big-data solutions across the U.S. and China.

I also build AI-agent orchestration tools, including AIspar.app, a research platform for multi-model debate, evidence cross-verification, and model-to-model cross-examination.

Experience

Work history, roles, and key accomplishments

Google logoGO
Current

Tech Lead, Display Ads Retrieval and Indexing

Jan 2013 - Present (13 years 7 months)

Overseeing fundamental ad infrastructure responsible for tens of billions of dollars in annual revenue. Led projects including Display Ads Retrieval, Unified Matching Framework, Ad Matching Migration, and Indexing Pipeline Overhaul.

TI

Co-Founder

Tickreel.com

Jan 2009 - Dec 2013 (4 years 11 months)

Co-founded a social web filter and big data solutions company. Built back-end activity processors for real-time data aggregation and analysis, and engineered Chinese sentiment-analysis infrastructure.

Amazon.com logoAM

Senior Software Engineer

Jan 2011 - Dec 2012 (1 year 11 months)

Developed key features for the Vendor Negotiation Portal, including data-override and view bookmarking. Created automatic contract renewal tools for small vendors.

Ask.com logoAS

Principal Software Engineer

Ask.com

Jan 2005 - Dec 2011 (6 years 11 months)

Developed i18n normalization/tokenization libraries for international search, designed fuzzy matching for query normalization, and led development of a flexible Vertical Online Framework.

Education

Degrees, certifications, and relevant coursework

Georgia Institute of Technology logoGT

Georgia Institute of Technology

Doctor of Philosophy, Computer Science

Ph.D. in Computer Science with a thesis on scalability and compose-ability techniques for network simulation.

National University of Singapore logoNS

National University of Singapore

Master of Science, Computer Science

M.S. in Computer Science with a thesis on matching and aligning English-Chinese bilingual texts.

Xiamen University logoXU

Xiamen University

Bachelor of Engineering, Computer Science

B.Eng. in Computer Science.

Get matched with your dream remote job

Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!

Sign up
Himalayas profile for an example user named Frankie Sullivan