Rikito Taniguchi
Scala Compiler Engineer at VirtusLab
Osaka, Japan
Summary
🤩
Rockstar🎓
Top SchoolRikito Taniguchi is a Scala compiler and tooling engineer with 11 years of software experience and five years focused on web development and engineering best practices. Based in Osaka, he contributes to flagship Scala projects—Scala 3 (Dotty), scalameta, Metals, scalafmt and scalafix—working on compiler internals, semanticdb export, parser refactors and IDE integrations that power language-aware tools. He excels at untangling large, legacy codebases into maintainable services (experience re-architecting a monolithic Perl system into SOA) and writes robust tests and docs alongside code. Pragmatic and empathetic in cross-functional settings, he blends deep compiler knowledge with practical developer-experience improvements like CLI completions, LSP fallbacks and formatter edge-case fixes. A persistent OSS contributor, he’s added semantic models to the Scala 3 compiler and helped surface semantic information used by linters and IDEs—work that quietly underpins many developer workflows.
11 years of coding experience
4 years of employment as a software developer
Master's degree, Computer Science, Master's degree, Computer Science at Institute of Science Tokyo (Science Tokyo)Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Kyoto University
Github Skills (31)
parserator10
parser10
compiler-development10
command-line-interface10
sbt10
formatter10
language-server-protocol10
scala10
metaprogramming10
language-server10
semantic-analysis10
formatters10
command-line10
semanticdb10
cli10
Programming languages (19)
Github contributions (5)
scalameta/metals
Jun 2019 - Sep 2022
Scala language server with rich IDE features 🚀
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:2 releases, 623 reviews, 222 commits in 3 years 4 months
Contributions summary:Rikito primarily worked on the Metals language server, focusing on core functionality and improving its test suite. They implemented a fallback mechanism within the definition provider, enhancing the "go to definition" feature. Furthermore, they introduced tests that validated improvements in the implementation and auto-completion of extension methods. The user also contributed to fixing bugs, refactoring code, and updating dependencies, showcasing a commitment to the project's reliability.
atom-pluginscalametavscodeide-featuresscala
scalacenter/scalafix
Feb 2018 - Oct 2021
Refactoring and linting tool for Scala
Role in this project:Back-end Developer & Automation Engineer
Back-end Developer & Automation EngineerContributions:6 reviews, 13 commits, 12 PRs in 3 years 9 months
Contributions summary:Rikito contributed to the scalafix project by implementing features and making improvements related to the command-line interface and build system. They added completion support for rule descriptions in both ZSH and SBT, enhancing the user experience. The user also addressed issues related to the display of help messages and improved the error messages. Furthermore, they modified the build configuration to include necessary dependencies and configurations for the project.
linterlintingmetaprogrammingrefactoringscala
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