Goro Fuji
Software Engineer at Fastly
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolGoro Fuji is a seasoned software engineer based in Tokyo with 18 years of experience building backend systems, developer tooling, and mobile apps across companies like Fastly, COOKPAD, and DeNA. He blends systems-level work—contributing to high-profile open-source projects such as iovisor/bcc and h2o/quicly—with product-focused engineering, having introduced TypeScript, GraphQL and SSR to the team collaboration product Kibela. Comfortable across languages and stacks, his contributions range from improving BPF/USDT usability and QUIC tracing to refining Ruby libraries like graphql-ruby and msgpack-ruby. He also brings practical DevOps and CI/CD expertise, having automated builds and test scenarios with GitHub Actions and sanitizer tooling. Outside work he’s a parent of two, which he cites as a steady source of real-world debugging practice and time-management discipline.
18 years of coding experience
8 years of employment as a software developer
Bachelor of Psychology, Educational Psychology, Bachelor of Psychology, Educational Psychology at 筑波大学 / University of Tsukuba
Japanese, English
Stackoverflow
879reputation
70kreached
20answers
5questions
Github Skills (79)
msgpack10
unpack10
mobile-development10
python10
testing10
rspec10
perl10
bpf10
base64-encoding10
ruby10
javas10
build-automation10
javascript10
component-development10
unix-timestamp10
Programming languages (24)
Github contributions (5)
pygments/pygments.rb
Nov 2016 - Jan 2020
💎 Ruby wrapper for Pygments syntax highlighter
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:2 releases, 39 commits, 42 PRs in 3 years 2 months
Contributions summary:Goro primarily focused on upgrading the Pygments library version within the Ruby wrapper project. Their commits show modifications to the documentation and internal file structure related to lexer development. They also introduced thread safety and optimized custom Python binary execution. The user's work also involved merging in upstream changes.
ruby-wrappersyntax-highlighterrubyhighlighterpygments
rouge-ruby/rouge
May 2017 - Mar 2020
A pure Ruby code highlighter that is compatible with Pygments
Role in this project:Back-end Developer
Back-end DeveloperContributions:102 commits, 77 PRs, 80 pushes in 2 years 10 months
Contributions summary:Goro primarily contributed to enhancing the code highlighting functionality of the Rouge library. Their work involved adding syntax highlighting support for new programming languages, specifically Digdag, and improving the existing syntax highlighting for languages like Ruby and Varnish. They also addressed code quality by enabling RuboCop rules and fixing Ruby warnings, ensuring the project's maintainability and adherence to coding standards. Furthermore, the user updated the build process with new subcommands.
pure-rubyrubyhighlightercode-highlighterpygments
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