Robert Sun
Australia
Summary
🤩
Rockstar🎓
Top SchoolRobert Sun is a software engineer with 11 years of experience building scalable web and blockchain systems, most recently as a Founding Engineer at OpenSea where he helped evolve core marketplace SDKs. He has full-stack and backend fluency in TypeScript and smart-contract integrations, contributing significant features to prominent open-source projects like opensea-js and seaport-js (including EIP-712 support, bulk cancellations, and sign/cancel order logic). Prior roles at LinkedIn, Facebook, and Amazon show a consistent record of improving product performance and reliability—whether cutting search latency, driving a $1M+/day GTM launch, or globalizing DynamoDB-backed services. He pairs hands-on implementation skills with mentoring and frontend leadership experience, having led recruiter search UI efforts and reusable component libraries. Based in Australia, he brings both startup and large-enterprise discipline to on-chain marketplace problems and developer tooling. An under-the-radar strength is his knack for refactoring and build-process improvements that raise long-term maintainability across complex codebases.
11 years of coding experience
10 years of employment as a software developer
Bachelor's Degree, Computer Science, Bachelor's Degree, Computer Science at Georgia Institute of Technology
English
Github Skills (14)
smart-contracts10
typescript10
javascript10
typescripts10
sdk10
web3js10
ethereum10
blockchain10
typescript-types10
apidoc9
eip9
api9
nodejs7
react5
Programming languages (6)
Github contributions (5)
ProjectOpenSea/seaport-js
Mar 2022 - Oct 2022
A TypeScript library to interface with the Seaport marketplace.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:7 releases, 24 reviews, 86 commits in 6 months
Contributions summary:Robert has primarily contributed to the core functionality of a Seaport marketplace client library written in TypeScript. Their work focuses on adding and implementing key methods, specifically the `signOrder` method. They have also implemented the underlying logic of the `cancelOrders` method, showing a strong understanding of the contract and its interactions, and refactored the code.
apijavascript-librarymarketplaceseaportjavascript
ProjectOpenSea/opensea-js
Aug 2021 - Jan 2023
TypeScript SDK for the OpenSea marketplace
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:55 reviews, 154 commits, 44 PRs in 1 year 5 months
Contributions summary:Robert primarily focused on updating and refactoring the codebase to improve the functionality of the OpenSea marketplace SDK. They updated API endpoints, added an option to bypass read-only providers, and implemented the ability to freeze listings. The user also made significant contributions to supporting Wyvern 2.3 features including bulk cancellations and EIP-712, while also making improvements to the build process and dependencies.
marketplaceopenseajavascriptblockchainsdk
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