Hongyu Guo
Associate Professor
Washington DC-Baltimore Area United States
Summary
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Rockstar🎓
Top SchoolHongyu Guo is an experimental physicist and Associate Professor with over 18 years in condensed matter research and deep expertise in synchrotron X-ray and neutron scattering techniques. He has a strong track record from Johns Hopkins and NIST to the Chinese Academy of Sciences studying structure and dynamics of soft and complex materials, bridging hands-on beamline experiments with rheology and theory. Beyond academia, he contributes to open-source backend development—enhancing SQL support and string functions in the widely used Apache Calcite project—demonstrating fluency in both scientific instrumentation and production-grade software. Based in the Washington DC–Baltimore area, he combines long-form experimental programs with pragmatic software contributions that improve data processing and query capabilities for broader research and engineering workflows.
3 years of coding experience
5 years of employment as a software developer
Johns Hopkins UniversityMaster of Science (M.S.), Physics, Master of Science (M.S.), Physics at Peking University
Chinese, English
Github Skills (14)
apache-calcite10
javas10
sql10
calc10
java10
databases9
big-data9
database9
junit8
jtest8
data-structure5
algorithms5
algorithm5
data-structures5
Programming languages (2)
Github contributions (5)
apache/calcite
Jul 2022 - Jan 2025
Apache Calcite
Role in this project:
Back-end Developer
Back-end DeveloperContributions:93 reviews, 51 PRs, 24 pushes in 2 years 6 months
Contributions summary:Hongyu primarily contributed to the back-end logic and SQL query validation aspects of the Apache Calcite project. Their work included implementing support for new SQL features like `CREATE TABLE ... LIKE` and the `MERGE` statement, as well as addressing issues related to specific SQL dialects like MySQL and Spark SQL. The user also added new functions, such as `CODE_POINTS_TO_BYTES`, `CODE_POINTS_TO_STRING`, and `TO_CODE_POINTS`, which enhanced the project's string handling capabilities. These changes demonstrate a focus on expanding Calcite's SQL support and functionality.
geospatialapache-calcitesqlapachebig-data
macroguo-ghy/calcite
Jun 2023 - Mar 2024
Apache Calcite
Contributions:11 PRs, 196 pushes, 28 branches in 8 months
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