Masayuki Nagamachi
Software Engineer at Freelance
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolMasayuki Nagamachi is a seasoned software engineer in Tokyo with over 20 years of experience building browser engines and embedded web technologies for mobile and automotive platforms. He has deep expertise in cryptography, internet protocols, web standards, and GUI toolkits, and has architected core modules (network, security, layout) for NetFront browser engines while leading teams of 15+ high-skill engineers. His work spans low-level C/C++ systems and modern stacks (JavaScript, Node.js, Ruby, Rust), and he has driven measurable improvements in memory usage and binary size for Chromium/CEF-based engines. As a freelancer he continues to contribute to open-source projects like HonKit, improving code highlighting and UX for published Markdown books. With a physics background from Nagoya and Okayama Universities, he brings methodical problem-solving and an uncommon blend of research-minded rigor and hands-on engineering.
11 years of coding experience
14 years of employment as a software developer
Bachelor's Degree, Physics, Bachelor's Degree, Physics at Okayama UniversityMaster's Degree, Physics, Master's Degree, Physics at Nagoya University
Japanese, English
Github Skills (11)
plugin-development10
textbook10
javascript10
storybook10
markdown-it9
markdown9
css9
docbook9
lessc8
ebooklib8
asciidoc4
Programming languages (10)
Github contributions (5)
honkit/honkit
Nov 2020 - Nov 2020
:book: HonKit is building beautiful books using Markdown - Fork of GitBook
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:8 reviews, 21 commits, 1 PR in 2 days
Contributions summary:Masayuki primarily focused on enhancing and maintaining the `honkit-plugin-highlight` plugin, part of the HonKit project. Their contributions involved refactoring code, fixing errors, and improving coding styles to ensure the plugin's functionality. This included replacing dependencies, correcting block statement errors, and adding scripts to build and manage CSS styles, demonstrating a focus on improving the quality and usability of the code highlighting feature. The changes impact how code is rendered within HonKit books.
ebooknoteshonkitjavascriptplugin
mirakc/performance-measurements
Jul 2021 - May 2023
Performance measurements of tuner servers
Contributions:6 PRs, 32 pushes, 1 branch in 1 year 10 months
measurementsbenchmarkperformancetunermirakurun
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