Ji Zhao
Principal Software Engineer at FreeWheel
Beijing, United States
Summary
🤩
Rockstar🎓
Top SchoolJi Zhao is a Principal Software Engineer based in Beijing with over 20 years of programming experience and eight years in senior engineering roles across major tech firms including FreeWheel, Amazon, and Tencent. He specializes in C/C++ and full-stack development, with recent leadership driving architecture and delivery at FreeWheel. Ji contributes to high-profile open-source projects like Apache Druid, where he improved the web console, fixed complex JSON/big-number issues and added schema/input format support—demonstrating attention to both frontend UX and backend data integrity. His background includes a CTO role and a Master’s in Computer Application from Jilin University, reflecting a blend of hands-on coding, technical leadership, and product-focused engineering.
8 years of coding experience
11 years of employment as a software developer
Master of Engineering Computer Application, Master of Engineering Computer Application at Jilin University
English
Github Skills (10)
javascript10
apache-druid10
react10
protobuffer9
protobuf9
avro9
typescripts8
typescript8
typescript-types8
schema8
Programming languages (1)
Github contributions (4)
apache/druid
Jan 2021 - Aug 2021
Apache Druid: a high performance real-time analytics database.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:51 reviews, 15 commits, 38 PRs in 7 months
Contributions summary:Ji primarily focused on enhancing the web console of the Apache Druid project. Their contributions involved fixing bugs related to JSON display within the web console and incorporating JSONBig library for handling large numbers. The user also made changes to support protobuf schema registry and add Avro stream input format. Further modifications included bug fixes and integration test enhancements across multiple components of the web console.
real-timebig-datadruiddatabasehadoop
bananaaggle/druid
Dec 2020 - Dec 2021
Apache Druid: a high performance real-time analytics database.
Contributions:191 pushes, 34 branches in 1 year
real-time-analyticsanalyticssqlapachebig-data
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