Guangnan He
OLAP System Engineer at 字节跳动
Shanghai, Shanghai, China
Summary
🤩
Rockstar🎓
Top SchoolGuangnan He is an OLAP system engineer with 11 years of experience building high-performance analytical systems at top Chinese tech firms, currently driving OLAP platform work at ByteDance. He previously developed OLAP solutions in Java and C++ at Alibaba, combining production-grade engineering with a strong research foundation from a master's in pattern recognition and machine learning at Nanjing University. Comfortable at the intersection of systems and data, he focuses on scalable query execution, storage efficiency, and performance tuning for large-scale analytics. Known for meticulous attention to detail—aptly summarized on his GitHub as "Detail is the devil"—he contributes code and experiments in a public repo hub that reflects practical, engineering-first thinking. Based in Shanghai, he brings both academic rigor and hands-on experience optimizing real-world OLAP workloads.
11 years of coding experience
Master's degree, Pattern Recognition; Machine Learning; Image Retrieval, Master's degree, Pattern Recognition; Machine Learning; Image Retrieval at Nanjing University
English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (113)
hadoop10
olap10
etl10
embedded10
serverless10
cpp10
cloud-native10
big-data10
sql10
ai10
elt10
rust10
high-performance10
database10
search-engine10
Programming languages (7)
Github contributions (5)
compasses/incubator-doris
Jun 2022 - Jan 2023
Apache Doris(Incubating) is an MPP-based interactive SQL data warehousing for reporting and analysis.
Contributions:1 review, 7 PRs, 59 pushes in 7 months
dbmsdata-warehousingapache-dorisdorisbig-data
Compasses/LearningMaterials
Jan 2015 - Oct 2015
Contributions:30 commits, 26 pushes, 1 branch in 9 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.