Ruijie Zhai
Software Engineer at Databricks
Pittsburgh, Pennsylvania, United States
Summary
🤩
Rockstar🎓
Top SchoolRuijie Zhai is a software engineer with four years of experience building data systems and query infrastructure, currently contributing to Databricks' Lakeflow SDP. A Carnegie Mellon CS and Applied Math graduate with cross-campus study at Tsinghua, he has practical experience in query optimization from Oracle and hands-on data mining and pipeline automation from a Microsoft Web3 internship. He taught CMU's 15-445 databases course, blending deep systems knowledge with mentoring and pedagogy. Comfortable across databases, backend pipelines, and large-scale data workflows, Ruijie brings a mix of academic rigor and production-focused execution—often surfacing non-obvious performance wins through careful optimizer and pipeline tweaks.
4 years of coding experience
2 years of employment as a software developer
High School Diploma, High School Diploma at Nanjing Foreign Language SchoolGo-Local Program, Go-Local Program at Tsinghua UniversityBachelor of Science - BS, Computer Science, Applied Math, Computational Finance, Bachelor of Science - BS, Computer Science, Applied Math, Computational Finance at Carnegie Mellon University
Chinese, English, French
Github Skills (5)
database-management10
relational10
database10
dbms9
sql9
Programming languages (4)
Github contributions (5)
ChaosZhai/ChaosZhai
Jul 2023 - Feb 2024
Contributions:10 pushes, 1 branch in 7 months
ChaosZhai/lock-free-eht
Dec 2023 - Jun 2024
Contributions:2 pushes in 6 months
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