Senior Front-end Engineer (7+ years) based in Tokyo 🇯🇵, building practical products at the intersection of AI, language learning, and developer tools.
I specialize in scaling front-end systems, modernizing legacy platforms, and shipping tools people actually use daily.
- 📚 Language learning tools with practical daily use (not demo-ware)
- 🧩 Chrome extensions for instant context, vocabulary, and reading support
- 🤖 AI-assisted workflows for transcripts, grammar explanation, and review systems
- ⚡ Small products that prioritize speed, clarity, and real outcomes
I’m deeply interested in applied AI — especially using LLMs to improve real workflows, not just demos.
Current focus areas:
- 🔍 RAG-based learning/support experiences
- 📝 Prompt design and evaluation loops
- 🧙♂️ Lightweight AI agents for language learning and productivity
- 🧪 Turning small AI experiments into daily-use products
- 🔁 ModernABLoopPlayer A-B loop player with recording, waveform control, and AI transcripts.
- 🧠 Lingo-context AI-powered context, grammar, and pronunciation support.
- ✒️ moji-fu Capture and apply web font styles in one click.
- 🎬 subtitle-pipeline Extract, merge, and prepare bilingual subtitles for language learning.
- 🧩 katachi Project Karachi/Katachi — shape-focused utility project.
- ⚔️ kanji-kaisen Gamified Kanji learning with SRS and stroke recognition.
- 🖌️ kanji-recognizer Kanji recognition practice tool.
- 🎴 anki-jlpt-n2-grammar-example-sentences JLPT N2 grammar Anki deck with examples and audio support.
- 🎴 anki-jlpt-n1-grammar-example-sentences JLPT N1 grammar Anki deck with examples and audio support.
- 🇨🇳 Mandarin (Native)
- 🇺🇸 English (Professional working proficiency, CEFR B2)
- 🇯🇵 Japanese (JLPT N2, pursuing N1)
- 🎌 Learning Japanese
- 🏗️ Building tiny tools that compound over time
- 🔬 Going deeper on applied AI engineering