Taro Matsuzawa
ディベロッパー at Geolonia
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolTaro Matsuzawa is a seasoned software developer and infrastructure engineer with around 15 years of experience building web and GIS services, particularly using Ruby on Rails, Python and Postgres/PostGIS. He blends backend and front-end skills—having contributed to projects from React Native static servers and redux-persist to Tokyo’s COVID-19 public site—and has hands-on experience in mobile, mapping tiles (raster and Mapbox vector), and spatial extensions like ckanext-spatial. A long-time open-source advocate and former Mozilla contributor, he has authored books and articles on Firefox and a React Native book, reflecting a habit of turning technical work into public learning resources. His career spans product development, QA/test automation, and mentoring (including training Vietnamese engineers), showing comfort across code, databases, and operational support. Notably, he pairs practical delivery for B2B and EC systems with deep interest in functional programming (Scala/Haskell), which informs his thoughtful approach to maintainable, testable systems.
15 years of coding experience
10 years of employment as a software developer
Bachelor, Information Science, Bachelor, Information Science at Tokyo Denki University千葉敬愛高等学校
English
Github Skills (34)
unit-testing10
javascript10
postgresql10
react-native10
mobile-development10
pytest10
python10
testing10
css10
sass10
storage10
typescript10
redux10
spatial-data10
vue10
Programming languages (24)
Github contributions (5)
ckan/ckanext-spatial
Jan 2021 - May 2021
Geospatial extension for CKAN
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:2 reviews, 108 commits, 1 PR in 4 months
Contributions summary:Taro's contributions primarily focus on modifying and testing database interactions within the CKANext-spatial extension. They addressed issues related to PostGIS extension management, including creating and dropping the extension in a test environment and managing tables related to PostGIS. The changes involve refactoring and adapting tests to properly clean up and set up the database for spatial data, also fixing errors in the database testing setup.
ckangeospatialgis
rt2zz/redux-persist
Aug 2021 - Aug 2021
persist and rehydrate a redux store
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:40 commits, 1 PR, 4 comments in 2 days
Contributions summary:Taro primarily focused on refactoring and updating the `redux-persist` library. They upgraded package dependencies and removed old configurations, demonstrating a focus on maintaining a modern codebase. The user also implemented TypeScript, rewriting and renaming related files. Moreover, they adapted test code, and fixed build errors, highlighting their ability to ensure code quality and maintainability.
persistorreactredux-middlewareredux-storerehydrate
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