Hsjang Dev
South Korea
Summary
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RockstarSojin Park is Head of Frontend Engineering at Viva Republica (Toss) with eight years of experience building large-scale web frontends using TypeScript, React, and modern toolchains. He led and scaled frontend teams from single digits to over 60 engineers, architecting a microfrontend ecosystem of 50+ services and 20 libraries that cut deployment time by 70%. Deeply grounded in computer science and mathematics—topology, statistics, and real analysis—he applies functional programming principles to produce robust, testable interfaces and infrastructure. A pragmatic leader and coach, he focuses on developer productivity, effective project execution, and building observability into systems (e.g., pinpointable account/card registration and scraping pipelines). He contributes to notable open-source TypeScript work such as toss/slash, improving docs and common libraries, and prefers a minimalist approach to tooling and design.
7 years of coding experience
Github Skills (12)
typescript10
javascript10
typescripts10
react10
typescript-types10
documentation10
web-content9
webpages9
storage8
rails-i18n7
i18n-js7
ember-i18n7
Programming languages (4)
Github contributions (5)
toss/slash
Oct 2022 - Nov 2022
A collection of TypeScript/JavaScript packages to build high-quality web services.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:190 reviews, 11 commits, 52 PRs in 1 month
Contributions summary:Hsjang primarily contributed to documentation and component updates within the `toss/slash` repository, which focuses on building web services. They migrated JSDoc to i18n for common libraries, added documentation for several utility functions, and made improvements to the documentation for the storage components. They also fixed a reference issue within the React hooks.
reactjavascriptweb-serviceshigh-qualityjavascript-typescript
HoseungJang/request-typer
Dec 2021 - Jan 2022
Make typed request schema and build OpenAPI Specification
Contributions:22 releases, 96 commits, 4 PRs in 1 month
openapi-specificationspecificationtypedrequestopenapi3
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