Yoshito Umaoka
Solutions Architect at Straker Translations
Chelmsford, Massachusetts, United States
Summary
🤩
Rockstar🎓
Top SchoolYoshito Umaoka is a solutions architect with 19 years of experience specializing in globalization, internationalization, and backend systems. He led Unicode/CLDR and ICU contributions at IBM, improving timezone, locale, and calendar support—work that underpins widely used internationalization libraries. At IBM he also built Translation Service APIs as a Globalization Architect, and now applies that expertise to scalable localization solutions at Straker Translations. His engineering career spans early internet-era internationalization work on Domino and LDAP integrations through modern API and thread-safety improvements, showing deep hands-on systems skill. He combines protocol- and standards-level contributions with practical product delivery, and has a track record of bridging legacy mappings (e.g., IANA/Windows time zones) to current platforms. Based in Chelmsford, MA, he brings rare institutional knowledge of global text, timezone, and locale engineering that’s critical for truly global software.
19 years of coding experience
20 years of employment as a software developer
Keio University
Stackoverflow
41reputation
145reached
2answers
0questions
Github Skills (11)
javas10
localization10
java10
cprogramming-language9
c-language9
xml9
multithreading8
api-design8
globalization6
translation6
ibm-cloud6
Programming languages (8)
Github contributions (5)
unicode-org/icu
Aug 2006 - Nov 2022
The home of the ICU project source code.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:17 releases, 186 reviews, 2762 commits in 16 years 6 months
Contributions summary:Yoshito contributed to the ICU library, focusing on core functionality and internal APIs. The commits show work on time zone data, including implementing new APIs for IANA time zone IDs and Windows time zone mapping. The user implemented support for handling localized GMT offsets, improved the handling of date parsing and made changes to improve the thread safety of the codebase and implemented a new Java 7 compatible Deque implementation.
cppc-plus-plusicu4cunicode-consortiumicu4j
unicode-org/cldr
Apr 2008 - Dec 2022
The home of the Unicode Common Locale Data Repository
Role in this project:Back-end Developer & Localization Specialist
Back-end Developer & Localization SpecialistContributions:22 reviews, 584 commits, 68 PRs in 14 years 10 months
Contributions summary:Yoshito primarily contributed to the Unicode Common Locale Data Repository (CLDR) project by updating and enhancing timezone data and locale-specific information. Their work included updating timezone data to reflect current information, modifying code to support data changes related to the reorganization of zone mapping data, and creating mappings between old and new types related to timezone and locale extensions. Furthermore, the user documented changes by updating the LDML specification. The user also worked on supporting new calendar types.
data-repositorylocalecldricuunicode
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