Liuyin Cheng
Data Engineer
California, United States
Summary
👤
Senior🎓
Top SchoolLiuyin Cheng is a data engineer with over a decade in software and more than eight years focused on data platforms, currently building pipelines at Character.AI in California. She has deep hands-on experience designing streaming and batch architectures using Spark, Flink, Presto/Hive, CDC, and Airflow, and is fluent in SQL/NoSQL modeling and Python/Java OOP. Her background spans fast-moving consumer tech at Airbnb, Snap, and Lyft, where she translated ambiguous product needs into reliable, scalable data infrastructure. Early roles in data science and research sharpened her ability to accelerate ETL at scale—once speeding preprocessing 20x on a 300GB dataset via Hadoop streaming—and she brings that performance-first mindset to production systems. With dual master’s degrees in Computer Science and Industrial Engineering, she blends system-level architecture with process optimization and a pragmatic appreciation for operational trade-offs.
11 years of coding experience
10 years of employment as a software developer
ESIEE AmiensMaster's Degree Computer Science and Engineering, Master's Degree Computer Science and Engineering at Santa Clara UniversityMaster's degree Industrial Engineering, Master's degree Industrial Engineering at The Ohio State UniversityBachelor's degree Automotive Engineering Technology/Technician, Bachelor's degree Automotive Engineering Technology/Technician at Beijing Institute of Technology
Chinese, EnglishProgramming languages (1)
Github contributions (5)
LiuyinC/Algorithm_Thinking_projects_applications
Sep 2014 - Oct 2014
Contributions:8 commits in 1 month
LiuyinC/tinygen
Jul 2024 - Feb 2025
Tiny Gen
Contributions:12 PRs, 7 pushes, 8 branches in 6 months
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