Hyung-gyu Ryoo
Software Developer at CUBRID
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolHyung-gyu Ryoo is a software developer based in Seoul with 11 years of experience focused on DBMS, 3D GIS, geospatial intelligence and big data systems. He currently develops the CUBRID DBMS, adding features, fixing query-processor and PL/CSQL issues, and producing technical documentation that keeps the engine reliable in production. An active open-source contributor, he contributes backend fixes and feature work to the well-known GeoTools library, including deprecations and a new createCurve method with tests. His academic background in spatio-temporal databases and GIS (Master/PhD-level) informs a rare blend of research-led thinking and pragmatic engineering. Colleagues rely on him for deep domain expertise in spatial data handling and maintainable database code rather than flash; he often surfaces small but impactful improvements that reduce technical debt.
11 years of coding experience
Master/Ph.D., Spatio-Temporal Databases, GIS, Master/Ph.D., Spatio-Temporal Databases, GIS at Pusan National University
English, Korean
Stackoverflow
46reputation
907reached
2answers
0questions
Github Skills (11)
javas10
geotools10
gis10
geospatial10
java10
openstreetmap6
go6
sql6
android6
cubrid6
database6
Programming languages (14)
Github contributions (5)
geotools/geotools
Jun 2015 - Nov 2016
Official GeoTools repository
Role in this project:
Back-end Developer
Back-end DeveloperContributions:7 commits, 11 PRs, 10 comments in 1 year 4 months
Contributions summary:Hyung-gyu primarily focused on code maintenance, bug fixes, and improvement of the existing codebase within the GeoTools library. Their contributions include fixing comment typos, removing unused variables and dead code. They also deprecated methods and introduced a new createCurve method while adding the tests for the same. The changes touch upon several modules of the library.
sqlserverpostgiswmsgeotoolsmongodb
hgryoo/SFCGAL4J
Dec 2017 - Aug 2018
Java wrapper for Simple Feature CGAL(SFCGAL) on Maven environment
Contributions:44 commits, 26 pushes, 2 branches in 8 months
javamavenjava-wrappercgal
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