Michael Leung

University of California, Riverside

2009 - 2014

Mechanical Engineering, Bachelor's Degree

Staff Mobile Developer

Jun 2021 – Nov 2025

Consensys

• Developed the MetaMask crypto wallet application with secure wallet management, seamless dApp integration, and multi-network support.
• Built and maintained the mobile application using TypeScript, React Native, Expo, and Redux, delivering a seamless cross-platform experience on iOS and Android.
• Implemented dApp connectivity and multi-network support using blockchain libraries such as Web3.js, Ethers.js, and Infura.
• Developed polished mobile interfaces using React Native’s StyleSheet, styled-components, and reusable UI component patterns.
• Ensured robust wallet security through BIP-39/44 key management, encrypted storage, and biometric authentication.
• Maintained robust app performance and security through rigorous testing with Jest and Mocha.
• Streamlined CI/CD pipelines for the MetaMask mobile wallet using Bitrise and Fastlane, automating build, testing, and deployment processes for seamless iOS and Android releases.
• Developed mobile API communication with Node.js backend services using Axios and Fetch, ensuring reliable and secure wallet functionality.
• Collaborated with multi-disciplinary teams of engineers, testers, and clients daily in an agile environment and participated in code reviews.
• Mentored new mobile engineers joining the team with pair programming.

Tech Stack: React Native, Expo, Node.js, MySQL, Git, Agile, Redux, React Hooks, Jest, GitHub Actions, Bitrise, Web3, Ether, Infura

Senior React Native Developer

Nov 2018 - May 2021

Prept

• Developed the Resort OrderPro application from scratch in a startup environment, enabling shopping, delivery, and invoicing of grocery orders.
• Established end-to-end mobile app features from scratch using TypeScript, React Native, Context API.
• Utilized native-base styling library to implement the pixel-perfect and responsive UI based on Figma design system.
• Implemented real-time geolocation and GPS tracking to optimize delivery routes, track drivers in transit, and provide accurate ETAs to customers.
• Integrated maps and location services using Google Maps API, enabling order assignment based on proximity and automatic route calculation.
• Implemented push notification services with Firebase Cloud Messaging and authentication using Firebase auth.
• Optimized app performance using memoization, lazy loading, and image optimization techniques.
• Implemented offline support with SQLite and local caching, allowing drivers to access orders, update delivery status, and record invoices without internet, with automatic synchronization to the backend upon reconnection.
• Integrated secure payment processing using Stripe for transactions and Plaid API for bank account verification.
• Utilized Node.js to create scalable back-end solutions, ensuring the responsiveness and reliability of the applications.
• Integrated AWS S3 for secure cloud storage of receipts, invoices, and order-related images.
• Managed manual deployment to iOS via TestFlight and Android via AAB, ensuring smooth release cycles, version control, and post-release monitoring for a production-ready grocery delivery app.
• Leveraged Storybook to manage UI components and utility functions, including API calls.
• Documented development processes and technical specifications using Confluence.
• Led the startup team and followed a scrum-based development process, mentoring the team to improve workflow and maintain an agile environment.

React Native Developer

May 2016 - Nov 2018

Quantasy

• Developed Laugh Out Loud mobile application, a streaming comedy video network from Kevin Hart, for iOS and Android platforms.
• Built and maintained cross-platform features using React Native & JavaScript, ensuring smooth performance and seamless user experience.
• Integrated video streaming, user authentication, and push notifications to enhance app functionality.
• Collaborated closely with product and design teams to implement UI/UX improvements and optimize app responsiveness.
• Conducted rigorous testing and debugging to maintain high-quality, stable releases across multiple devices.
• Implemented analytics tracking to monitor user engagement and support data-driven improvements.

Mobile Developer

May 2014 - Apr 2016

HuddleUp Technologies

• Developed the HuddleUp app, a free communication tool for deskless teams across multiple industries, featuring group and one-on-one chat, read receipts, message confirmations, file sharing, and alerts.
• Built the app entirely with native code – Java for Android and Objective-C for iOS.
• Migrated native mobile application to early react native version for the cross-platform compatability.
• Implemented real-time messaging using Socket.IO on a Node.js backend.
• Integrated push notifications with APNs for iOS and GCM for Android.
• Conducted code reviews and collaborated with cross-functional teams to clarify requirements and technologies.