Seokho Song
Staff Software Engineer at Igalia
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolSeokho Song is a Staff Software Engineer based in Seoul with over 10 years of experience specializing in browser internals, JavaScript engines (Blink/V8), web standards, and frontend engineering with React. As a committer to both Chromium and V8, he has shipped CSS standard features to Chrome, implemented Float16Array performance improvements in V8, and authored numerous Blink patches that measurably improved rendering and math performance. He pairs deep low-level optimization skills with product-focused frontend work—e.g., a 500% field-rendering speedup and a 400% development productivity gain at Modusign—validated via benchmarks and analytics. An active contributor to web-platform-tests, he helps ensure cross-browser interoperability for tricky CSS behaviors, and he balances rigorous engineering with a quieter creative side as a violinist.
10 years of coding experience
5 years of employment as a software developer
Computer Science, Computer Science at Korea National Open UniversityComputer Science, Computer Science at Paichai University
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (13)
html10
css10
javascript10
web-standards10
test-automation10
testing10
dom9
browser9
webtest8
web-testing8
blink8
webkit7
firefox6
Programming languages (11)
Github contributions (5)
web-platform-tests/wpt
Sep 2020 - Nov 2022
Test suites for Web platform specs — including WHATWG, W3C, and others
Role in this project:
Front-end Developer & Test Automation Engineer
Front-end Developer & Test Automation EngineerContributions:1 review, 26 commits, 2 comments in 2 years 2 months
Contributions summary:Seokho primarily contributed to the web platform tests for the WPT repository. Their work focused on creating and updating test cases for various CSS features, including transforms, calc functions, and color values. The contributions included implementing tests for handling infinity and NaN values in calculations, as well as ensuring correct behavior with sticky positioning and the CSS Typed OM. The user also refactored test utilities and addressed issues related to serialization and computed values within the testing framework.
microsoft-edgetest-runnerspecssafarifirefox
Faangorithm/Common
Sep 2019 - Nov 2019
Log of meetings
Contributions:21 commits, 54 PRs, 37 pushes in 1 month
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