Hyeonseok Shin is a Frontend Software Engineer with 13 years of experience building user-focused web experiences and rapid prototypes for products at companies such as MakinaRocks, NAVER LABS, Kakao/Daum, and Opera. He blends strong frontend and UX engineering background with practical product sensibilities, having moved from web publishing and design into large-scale frontend development and interaction work. Hyeonseok is an active open-source contributor on high-profile Mozilla projects (Firefox Monitor, Send, Common Voice, Screenshots), specializing in Korean localization to make privacy and voice-tech tools accessible to Korean speakers. Based in Gyeonggi, South Korea, he brings continuity across startups and established firms, bridging design thinking and production-grade frontend implementation. An interesting thread through his career is a chemistry degree from Seoul National University, suggesting a methodical, experimental approach to solving UI and internationalization challenges.
13 years of coding experience
13 years of employment as a software developer
Bachelor’s Degree, Chemistry, Bachelor’s Degree, Chemistry at Seoul National University
Common Voice is part of Mozilla's initiative to help teach machines how real people speak.
Role in this project:
Localization / Internationalization Specialist
Contributions:66 commits in 4 years 5 months
Contributions summary:Hyeonseok primarily contributed to the Korean (ko) localization of the Common Voice project. Their work involved updating and modifying the `messages.ftl` file, which appears to contain the translation strings for the user interface. The commits demonstrate a focus on translating various UI elements, including labels, descriptions, and other textual components, to ensure the project's accessibility for Korean-speaking users. The user's contributions are essential for making Common Voice available to a wider audience.
Firefox Screenshots: the best way to take screenshots on the web.
Role in this project:
Localization / Internationalization Specialist
Contributions:17 commits in 1 year 10 months
Contributions summary:Hyeonseok's contributions primarily involve updating the Korean (ko) localization of the Firefox Screenshots project. They modified the `locales/ko/server.ftl` file, translating and updating various strings related to the user interface, including text for the home page, shot page, and settings. The user's work ensured the correct and up-to-date Korean language support within the Firefox Screenshots application. The contributions reflect an active role in the internationalization of the project.
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Hyeonseok Shin - Frontend SW Engineer at MakinaRocks