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Yu Liu
Senior Big Data Engineer specializing in AML/KYC compliance and cloud data platforms
New York, NYBig Data Engineer-contract17 years experienceSeniorFinancial ServicesBankingFinTech
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About
Data engineer with experience delivering an end-to-end pipeline handling ~3.5TB in a star-schema setup (fact + dimensions) and producing business-facing tables in Hive/Spark. Identified and resolved UAT-reported duplicate issues caused by joins through root-cause analysis, and also built automation to run Spark SQL metrics on weekly/monthly/quarterly cadences and distribute results to users.
Experience
Big Data Engineer-contractCiti
Big Data Engineer-ContractWells Fargo
KYC Data Developer-ContractBank of China-USA
Big Data Engineer-FTE Dept: GFTCiti
Data Developer-FTERedPulse
IT Business Analyst-Full timeIKEA
Data Analyst-InternAmerican Pile driving Equipment Inc.
IT Specialist-ContractExxonMobil
System Analyst-Full timeKanebo Cosmetics
Education
University of Missouri-Columbiamaster, Marketing Analytics (2014)
Shanghai Ocean Universitybachelor, Information Management & Information Systems (2006)
Key Strengths
- Owned end-to-end data pipeline (ingestion to business-facing tables) at ~3.5TB scale
- Data quality validation practices (counts, duplicates, null checks, group-by reconciliation)
- Debugged production/UAT data duplication via join analysis and intermediate-table verification
- Automated recurring BI metric generation with Spark SQL and delivered results as CSV on multiple cadences
- Built internal Selenium-based scraping to track job status and notify downstream users
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