Kazuki Yamada
ソフトウェアエンジニア at （株）コロプラ
Japan
Summary
🤩
Rockstar🎓
Top SchoolKazuki Yamada is a seasoned software engineer based in Japan with 10 years of hands-on experience and a decade-long tenure at Colopl, where he develops production-grade systems. He works across the full stack and has practical expertise in building developer tooling, notably creating Repomix (formerly Repopack), a CLI utility that packages repositories into AI-friendly single files for consumption by LLMs. Comfortable with Node.js and TypeScript, he implemented core packaging, compression, configuration, and security checks for that project, showing attention to both usability and safety. A Kyushu Institute of Technology alumnus, he combines steady corporate engineering experience with active open-source contributions that bridge everyday developer workflows and emerging AI use cases.
10 years of coding experience
九州工業大学
Github Skills (10)
file-processing10
typescript10
nodejs10
javascript10
typescripts10
typescript-types10
cli10
code-analysis9
configuration-management9
compression9
Programming languages (9)
Github contributions (5)
yamadashy/repomix
Jul 2024 - Apr 2025
📦 Repomix (formerly Repopack) is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Language Models (LLMs) or other AI tools like Claude, ChatGPT, DeepSeek, Perplexity, Gemini, Gemma, Llama, Grok, and more.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:58 releases, 23 reviews, 483 PRs in 8 months
Contributions summary:Kazuki implemented the initial setup and core functionalities of Repopack, a tool to pack a repository into a single file for AI use cases. They were responsible for setting up the command-line interface (CLI), incorporating the necessary dependencies for file handling and compression, and implementing the core logic to pack files. They integrated various technologies like Node.js, TypeScript, and various CLI libraries to create a functional tool that can be used to create AI-friendly files. The user also made code changes related to configuration, output generation, and security checks, suggesting a broad range of responsibilities.
aianthropicartificial-intelligencechatbotchatgpt
yamadashy/yamadashy
Jul 2020 - Jan 2025
Contributions:68 pushes, 1 branch in 4 years 6 months
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