Sergey Rubanov

Barcelona, Catalonia, Spain

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Summary

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Rockstar

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Top School

Sergey Rubanov is a seasoned software engineer and independent researcher based in Barcelona with 13 years of experience building runtimes, developer tools, and developer-facing products. As a TC39 Invited Expert and WebAssembly Community Group contributor, he works on standards, spec text and conformance tests (test262) while also shipping practical runtime and tooling improvements. His open-source footprint spans high-profile projects like Babel, Webpack, React and Socket Runtime where he modernized codebases, improved performance, and added real-world examples. He combines low-level systems work in C++ and Go with front-end and build-tool expertise, having implemented runtime internals, Node-compatible APIs and cross-platform examples. Sergey has commercial experience leading engineering efforts across trading terminals, telemetry (OpenTelemetry), and multi-tenant SaaS, and he often focuses on developer experience and observability as levers for product quality. A detail-oriented engineer, he repeatedly translates standards work into actionable tests and interoperable implementations—bridging specification, tooling, and production code.

13 years of coding experience

14 years of employment as a software developer

Master, Software development, Master, Software development at Orel State Technical University (OrelSTU)

English, Russian, Spanish

Stackoverflow

Stats

560reputation

10kreached

1answer

0questions

Badges

babeljs

top-5%

gulp

top-5%

Github Skills (43)

javascript10

transcode10

multiplatform10

abstract-syntax-tree10

testing10

s610

cross-platform10

bundle10

plugin10

webpack10

compiler-design10

lodash10

webpacker10

transpiler10

babel-core10

Programming languages (22)

JavaC++CSSBikeshedRustCCMakeMakefile

Github contributions (5)

compat-table/compat-table

Jan 2015 - Dec 2021

ECMAScript compatibility tables

Role in this project:

Full-stack Developer

Contributions:182 reviews, 592 commits, 740 PRs in 7 years

Contributions summary:Sergey contributed to the ECMAScript compatibility tables repository by adding support for Time-Dependent Zones (TDZ) for const and let declarations within es6/index.html and data-es6.js. They enhanced the compatibility information for the _6to5 transpiler. The user also added support for Symbol typeof support. These changes involved modifying HTML and JavaScript files to include or update compatibility status for specific features.

jsjavascriptcompatibilityecmascript

socketsupply/socket

Mar 2022 - Jan 2023

A cross-platform runtime for Web developers to build desktop & mobile apps for any OS using any frontend library.

Role in this project:

Full-stack Developer

Contributions:5 releases, 449 reviews, 336 commits in 10 months

Contributions summary:Sergey primarily focused on enhancing the codebase for a cross-platform runtime for web developers. Their contributions include refactoring code, particularly within the iOS portion of the project, renaming packages and updating configurations. They also added a React-based example application to showcase the project's capabilities, demonstrating knowledge of front-end and back-end integration, alongside build process enhancements. The user also improved the build and configuration by removing the usage of old packages.

runtimefront-endmaintainablegroundtauri

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