MetaMask/metamask-mobile
Sep 2025 – Feb 2026
6 Months active
Languages Used
JavaScriptTypeScripttstsxMarkdownJSON
Technical Skills
API IntegrationMobile DevelopmentReact NativeReduxState ManagementTypeScript
Luis Taniça
PROFILE
Luis Taniça
Over six months, Matallui developed and enhanced the Predict module for MetaMask/metamask-mobile, delivering prediction market trading, live sports data integration, and robust UI/UX improvements. He architected real-time data flows using React Native, TypeScript, and WebSocket integration, enabling responsive market updates and scalable feature flag management. His work included modularizing controllers, implementing optimistic UI updates, and introducing remote-configurable fee and slippage mechanisms to improve reliability and compliance. Matallui also refactored testing suites, strengthened error handling, and established governance through CODEOWNERS. The depth of his contributions ensured maintainable code, measurable engagement, and a secure, user-friendly trading experience within the mobile wallet.
Overall Statistics
Feature vs Bugs
42%Features
Repository Contributions
85Total
Bugs
32
Commits
85
Features
23
Lines of code
82,766
Activity Months6
Work History
February 2026
8 Commits • 3 Features
Feb 1, 2026February 2026 Performance Summary for MetaMask Mobile (2026-02). Delivered major architectural and UX improvements with a focus on reliability, privacy, and measurable engagement, across the Predict feature and homepage experiences. Implemented modular, maintainable patterns and a robust, app-wide notification system to improve responsiveness and user visibility.
8 Commits • 3 Features
Feb 1, 2026February 2026 Performance Summary for MetaMask Mobile (2026-02). Delivered major architectural and UX improvements with a focus on reliability, privacy, and measurable engagement, across the Predict feature and homepage experiences. Implemented modular, maintainable patterns and a robust, app-wide notification system to improve responsiveness and user visibility.
February 2026
January 2026
32 Commits • 7 Features
Jan 1, 2026January 2026 contributions focused on delivering and stabilizing the Live NFL sports experience in MetaMask Mobile, while continuing to improve the Predict module’s reliability, UX, and analytics. Work spanned feature delivery, UI integration, bug fixes, and documentation, with a strong emphasis on business value through real-time data and scalable configuration.
January 2026
32 Commits • 7 Features
Jan 1, 2026January 2026 contributions focused on delivering and stabilizing the Live NFL sports experience in MetaMask Mobile, while continuing to improve the Predict module’s reliability, UX, and analytics. Work spanned feature delivery, UI integration, bug fixes, and documentation, with a strong emphasis on business value through real-time data and scalable configuration.
December 2025
3 Commits • 3 Features
Dec 1, 2025December 2025 monthly summary focusing on the Predict module capabilities in metamask-mobile. Delivered governance, configurability, and UX improvements that enhance security, reduce dependency on hardcoded values, and improve transaction success in challenging market conditions.
3 Commits • 3 Features
Dec 1, 2025December 2025 monthly summary focusing on the Predict module capabilities in metamask-mobile. Delivered governance, configurability, and UX improvements that enhance security, reduce dependency on hardcoded values, and improve transaction success in challenging market conditions.
December 2025
November 2025
25 Commits • 5 Features
Nov 1, 2025November 2025: Delivered a safer, faster trading experience in metamask-mobile with a focus on reliability, performance, and regional compliance. Key outcomes include optimistic UI updates for sold/claimed positions, balances, and claimable positions with cache invalidation and cross-market consistency; a relay path to optimize sell-order routing; stability fixes around slippage cap and fee rounding; improved error messaging for placeOrder and sell orders; geoblocking controls with DE/RO coverage (including withdraw flow adjustments); app focus eligibility refresh and a new minimumVersion feature flag for safer rollouts; plus code quality improvements (ESLint) and UI enhancements for sharing market insights and rewards visibility. Business value: reduced latency and failure modes, clearer user feedback, and safer feature rollouts. Technical impact: enhanced caching strategies, robust error handling, and scalable feature flag governance enabling cross-market consistency and regional controls.
November 2025
25 Commits • 5 Features
Nov 1, 2025November 2025: Delivered a safer, faster trading experience in metamask-mobile with a focus on reliability, performance, and regional compliance. Key outcomes include optimistic UI updates for sold/claimed positions, balances, and claimable positions with cache invalidation and cross-market consistency; a relay path to optimize sell-order routing; stability fixes around slippage cap and fee rounding; improved error messaging for placeOrder and sell orders; geoblocking controls with DE/RO coverage (including withdraw flow adjustments); app focus eligibility refresh and a new minimumVersion feature flag for safer rollouts; plus code quality improvements (ESLint) and UI enhancements for sharing market insights and rewards visibility. Business value: reduced latency and failure modes, clearer user feedback, and safer feature rollouts. Technical impact: enhanced caching strategies, robust error handling, and scalable feature flag governance enabling cross-market consistency and regional controls.
October 2025
16 Commits • 4 Features
Oct 1, 2025October 2025 performance summary for MetaMask/metamask-mobile: Key Predict deliverables across fee handling, order execution, UI/UX, and testing were shipped, alongside critical bug fixes and reliability improvements. The team implemented client-side Safe fee authorization for Buy orders with environment-aware fee collector wiring, introduced and tested 0.5% slippage for market orders with toggling for testing, and delivered comprehensive UI/UX enhancements for the Predict flow (per-tab Android scrolling, improved navigation, balance checks on buy confirmations, toasts, rate limiting, and sticky tabs). The Predict testing suite was refactored for reliability with better mocks and async handling. Major bugs were fixed, including Safe nonce calculation for undeployed contracts, empty state rendering for PredictPositions, navigation stack issues, and geoblock coverage gaps. Overall impact: improved reliability of fee collection, reduced order failure rates, smoother user experience, and stronger testing posture. Technologies/skills demonstrated: React Native/TypeScript, on-chain fee authorization logic, environment-based configuration, ABI encoding considerations, UI/UX polish, and modern testing practices.
16 Commits • 4 Features
Oct 1, 2025October 2025 performance summary for MetaMask/metamask-mobile: Key Predict deliverables across fee handling, order execution, UI/UX, and testing were shipped, alongside critical bug fixes and reliability improvements. The team implemented client-side Safe fee authorization for Buy orders with environment-aware fee collector wiring, introduced and tested 0.5% slippage for market orders with toggling for testing, and delivered comprehensive UI/UX enhancements for the Predict flow (per-tab Android scrolling, improved navigation, balance checks on buy confirmations, toasts, rate limiting, and sticky tabs). The Predict testing suite was refactored for reliability with better mocks and async handling. Major bugs were fixed, including Safe nonce calculation for undeployed contracts, empty state rendering for PredictPositions, navigation stack issues, and geoblock coverage gaps. Overall impact: improved reliability of fee collection, reduced order failure rates, smoother user experience, and stronger testing posture. Technologies/skills demonstrated: React Native/TypeScript, on-chain fee authorization logic, environment-based configuration, ABI encoding considerations, UI/UX polish, and modern testing practices.
October 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 focused on delivering the foundational MetaMask Predict capability for MetaMask Mobile, enabling users to participate in prediction markets with core trading workflows. The effort established the architecture, UI scaffolding for market discovery and positions, and initial buy/sell trading through the PredictController and provider abstractions, setting the stage for iterative enhancements and broader market coverage.
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 focused on delivering the foundational MetaMask Predict capability for MetaMask Mobile, enabling users to participate in prediction markets with core trading workflows. The effort established the architecture, UI scaffolding for market discovery and positions, and initial buy/sell trading through the PredictController and provider abstractions, setting the stage for iterative enhancements and broader market coverage.
Activity
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Quality Metrics
Correctness95.4%
Maintainability83.4%
Architecture88.6%
Performance83.0%
AI Usage35.6%
Skills & Technologies
Programming Languages
JSONJavaScriptMarkdownTypeScripttstsx
Technical Skills
API IntegrationAPI integrationAnimationBackend DevelopmentCachingCustom HooksEVMEnvironment ConfigurationFront End DevelopmentFrontend DevelopmentFull Stack DevelopmentGitJavaScriptJestMobile Development
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