Sung Cho - Contracting

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I am available for hire as a contractor. Here are some of the things I can achieve for your company:

I have extensive experience with a number of technologies in production, notably JavaScript, Go, React and Ruby. Here is my GitHub profile, a resume, and talks with links to videos.

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I am open to both short term and long term contracts.

Previous engagements

Luxury Escapes

Rearchitected the purchase flow in a brittle internal React web application into a scalable and extensible solution handling >AU$100 million of purchases yearly.

Using node.js microservices and React, extended a hotel-only travel business platform into an integrated flights & hotel bundling business. Optimized a checkout process of a React application by 40%, handling >AU$300 million purchases yearly.

Sung redefined what we believed we could achieve through a combination of both extremely high-quality code & fast delivery.

Timothy Downs, Head of Engineering @ Luxury Escapes

Simply Wall St

Based on a web application built with React and TypeScript, delivered a mobile application by wrapping the application in a web view and exposing native SDKs to the JavaScript runtime.

While doing so, also enabled the web application to be used as a Progressive Web App (PWA), thus strengthening the mobile presence of the company while helping users access the product more easily.

We were quite impressed by Sung’s diligence and attention to detail throughout the project. He gave us very accurate and honest timelines throughout and completed them all on time, if not before they were due. Even when faced with teething problems, Sung was incredibly resourceful in troubleshooting and working around any technical blocking issues.

We will definitely keep Sung in mind for any future projects where we need fast, consistent and high quality outside help.

Jabin Bastian, Chief Technology Officer @ Simply Wall St


Designed, and built a GUI for a distributed graph database using React and Go. Shipped an open source clone of StackOverflow using Dgraph, React and node.js.

Designed, built, and maintained the official docs website and an interactive tutorial.

Style Atlas

Built Ranges, a feature that replaces spreadsheet for designers and fashion labels.



Designed and built a free and open source, a commercial personal knowledge base software supporting clients in web, command line, browser extensions, and an IDE plugin.

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