Namgyu Kim
Staff Software Engineer at Samsung Electronics
Suwon-si, Gyeonggi, South Korea
Summary
🤩
Rockstar🎓
Top SchoolNamgyu Kim is a Staff Software Engineer with a decade of experience building on-device search engines at Samsung’s Mobile eXperience Division, now leading core search architecture and performance work. He is an active Apache Lucene/Solr committer and PMC member who has contributed meaningful optimizations and Korean language support to the flagship Apache Lucene project. Namgyu combines deep backend engineering—focused on search data structures, tokenization, and performance refactors—with practical product delivery for mobile platforms. Based in Suwon, South Korea, he brings both enterprise experience at Samsung and open-source stewardship to bridge research-grade search technology with consumer device constraints. An early instructor for algorithm competitions, he also has a background mentoring and cultivating technical talent within university and industry programs.
11 years of coding experience
11 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Soongsil University
Korean, English
Github Skills (10)
lucene10
javas10
search-engine10
information-retrieval10
backend10
java10
algorithms8
data-structures8
algorithm8
data-structure8
Programming languages (2)
Github contributions (5)
apache/lucene
Apr 2021 - Jul 2026
Apache Lucene open-source search software
Role in this project:
Back-end Developer
Back-end DeveloperContributions:20 reviews, 5 PRs, 4 pushes in 5 years 4 months
Contributions summary:Namgyu primarily contributed to the Apache Lucene project by optimizing and refactoring code. Their work included optimizations within the `FieldTermStack` class, improving argument validation in `StoredField`, and enhancing the `toString()` method in `SegmentInfo`. The user also made optimizations within the `UserDictionary` and improved the codebase by changing parameters for `stringField` in `StoredFieldVisitor`. Furthermore, the user was also involved in improving the KoreanTokenizer and adding the KoreanNumberFilter.
lucenesearchnosqljavabackend
danmuzi/lucene-solr
Feb 2019 - Jan 2021
Mirror of Apache Lucene + Solr
Contributions:59 pushes, 24 branches in 1 year 11 months
solrapachelucenejavaapache-lucene
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