Cal Leung
Sr. Mobile Developer MetaMask at ConsenSys
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolCal Leung is a senior mobile developer with 11 years of experience building polished React Native and iOS applications, currently shaping the MetaMask mobile experience at ConsenSys in San Francisco. He blends front-end UI craftsmanship with back-end work—most notably contributing to MetaMask's core TokenListController to improve token data fetching, caching, and error handling across clients. Previously he led mobile and UX efforts for consumer platforms including dumpling and Kevin Hart’s LaughOutLoud, driving product-ready features and performance optimizations. Cal’s mechanical engineering background gives him a systems-oriented approach to mobile architecture and debugging. He’s active in the MetaMask open-source ecosystem and is vigilant about account authenticity, calling out AI-based impersonation of his profiles.
11 years of coding experience
3 years of employment as a software developer
Bachelor of Science (B.S.), Mechanical Engineering, Bachelor of Science (B.S.), Mechanical Engineering at University of California, Riverside
English, Chinese
Github Skills (17)
javascript10
mobile-development10
react-native10
typescript10
ui-design10
uid10
front-end-development10
typescript-types10
typescripts10
apidoc9
ethereum9
api9
react8
android8
ios8
Programming languages (5)
Github contributions (5)
MetaMask/metamask-mobile
Jul 2021 - Jan 2023
Mobile web browser providing access to websites that use the Ethereum blockchain
Role in this project:
Mobile Developer
Mobile DeveloperContributions:12 releases, 2000 reviews, 622 commits in 1 year 6 months
Contributions summary:Cal primarily contributed to the mobile application's UI and functionality, focusing on React Native components. Their commits include fixing typos, removing and refactoring UI elements within the send flow, address input and confirmation views, and also fixing layout issues in the header and ensuring proper loading states. Furthermore, the user made contributions related to improving the loading experience.
reactbrowserdapps-browserreact-nativeethereum
MetaMask/core
Jul 2021 - Jun 2022
This monorepo is a collection of packages used across multiple MetaMask clients
Role in this project:Back-end Developer
Back-end DeveloperContributions:143 reviews, 113 commits, 30 PRs in 10 months
Contributions summary:Cal primarily worked on the `TokenListController` within the MetaMask core repository, which manages token lists and metadata. Their commits involved consolidating token list data, optimizing API calls, and improving token list functionality. They implemented changes to the `TokenListController.ts` and `token-service.ts` files, contributing to data fetching, caching, and handling errors. Additionally, the user implemented changes within token service, including throwing errors on failure, and updated the token list controller to pull data from the dynamic list.
monorepoblockchaintypescriptclientsmetamask
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