Zesong Sun
Software Engineer II at Microsoft
Beijing, China
Summary
🤩
Rockstar🎓
Top SchoolZesong Sun is a Software Engineer II based in Beijing with a decade of experience building robust backend systems, now working at Microsoft after progressing from intern to full-time engineer. He holds a master's in Computer Software Engineering from Tsinghua and a bachelor's from Nanjing University, combining strong academic training with production experience. Zesong’s open-source work on Apache IoTDB emphasizes reliability—adding structured error codes, fixing HDFS storage issues, and refactoring RPC and MTree components to improve stability and data consistency. He has a demonstrated knack for tackling subtle backend bugs and improving system resilience in distributed storage and RPC layers. At Microsoft he continues to apply that focus on robustness and maintainability to large-scale services. Colleagues value him for methodical problem solving and a quiet engineering rigor that prevents small issues from becoming system-wide incidents.
10 years of coding experience
3 years of employment as a software developer
Bachelor's degree, Computer Software Engineering, Bachelor's degree, Computer Software Engineering at Nanjing UniversityMaster's degree, Computer Software Engineering, Master's degree, Computer Software Engineering at Tsinghua University
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (10)
javas10
error-handling10
hdfs10
back-end-development10
java10
thrift9
metadata-management9
databases8
big-data8
database8
Programming languages (4)
Github contributions (5)
apache/iotdb
Jul 2019 - Mar 2022
Apache IoTDB
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 release, 176 reviews, 230 commits in 2 years 9 months
Contributions summary:Zesong primarily focused on enhancing the error handling and code structure of the Apache IoTDB project. Their contributions included adding error codes for different response errors, fixing issues related to HDFS storage, and refactoring code related to RPC functionalities. They also refactored MTree, and fixed bugs related to merging and data type consistency. Their work indicates a focus on improving the robustness and stability of the project's backend.
tdenginenosqlapachebig-datadatabase
IDontKnowDontCallMe/336APP
Nov 2016 - Dec 2016
Contributions:40 commits, 46 pushes in 13 days
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