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Bruno Nascimento

PROFILE

Bruno Nascimento

Over a 13-month period, contributed to MetaMask/metamask-mobile and stellar/freighter-mobile by building and refining mobile wallet features, onboarding flows, and card management systems. Delivered cross-platform onboarding, asset management, and authentication flows using React Native, TypeScript, and Redux, while integrating APIs for blockchain wallet provisioning and KYC verification. Enhanced user experience through UI/UX improvements, deep linking, and internationalization, and maintained code quality with robust testing and documentation. Addressed reliability and maintainability by fixing bugs, updating build systems, and implementing feature flag management. The work emphasized secure storage, state management, and seamless navigation, supporting both Android and iOS platforms in production environments.

Overall Statistics

Feature vs Bugs

58%Features

Repository Contributions

115Total
Bugs
27
Commits
115
Features
38
Lines of code
183,762
Activity Months13

Work History

February 2026

5 Commits • 4 Features

Feb 1, 2026

February 2026 focused on delivering core Card experiences for MetaMask Mobile, driving business value through smoother onboarding, robust KYC flows, wallet provisioning, and UI polish. Key effort areas include onboarding improvements, KYC deeplink handling with shared feature-flag utilities, push provisioning for Apple/Google Wallet, and a UI refresh for Card Home. These changes reduce friction, enable wallet-based card provisioning, and enhance user engagement with a cleaner UX, backed by concrete commits across the Card feature set.

January 2026

12 Commits • 3 Features

Jan 1, 2026

January 2026 summary for MetaMask Mobile (repo: MetaMask/metamask-mobile). Focused delivery on Card onboarding, balance and UX improvements, secure asset handling, and checkout flow for a Metal Card, along with robustness in feature flag handling and onboarding reliability. Key features delivered include a revamped MetaMask Card onboarding flow with Veriff status verification and unified deeplink events, plus Card Home enhancements for improved balance display, detailed card views, and security UX. Also delivered a new Metal Card checkout flow with Daimo Pay integration. Major bug fixes addressed onboarding input stability on iOS (AutoFill-related distraction) and resilience of feature flags with fallback defaults and corresponding unit tests. Impact highlights include smoother user onboarding, faster card activation, reduced UI distractions during onboarding, and a more robust path to upgrading to a Metal Card, driving higher conversion and user satisfaction. Technical achievements cover React Native UI/UX refinements, onboarding flow rework, security UX improvements, and test coverage for feature flag fallback.

December 2025

5 Commits • 1 Features

Dec 1, 2025

December 2025: Delivered major Card-related improvements for MetaMask Mobile, focusing on navigation, onboarding, and asset network enhancements. Implemented Travel and Terms of Service links on Card Home, enabled Base network delegation, and introduced onboarding deeplinks with routing that respects authentication status. Added Card Home and onboarding deep link handling and fixed an asset change revert on Card Home. These changes improve onboarding flow, enable Base network flows, and stabilize the Card experience for users.

November 2025

22 Commits • 1 Features

Nov 1, 2025

Month: 2025-11. The MetaMask Mobile Card module delivered a focused set of reliability, UX, and maintainability improvements across cp-7.58.x to cp-7.59.x. Key outcomes include robust feature flag handling, stabilization of delegation flows, onboarding and KYC UI reliability, targeted UI polish for CardHome, SpendingLimit, and related Card screens, and an explicit emphasis on code health via maintainability refactors. The work reduced user-facing crashes and UI regressions, improved onboarding completion, and strengthened the foundation for upcoming feature flag work and cross-chain UI support. Business value was realized through smoother user journeys, higher feature delivery confidence, and cleaner code that supports faster iteration cycles.

October 2025

14 Commits • 10 Features

Oct 1, 2025

October 2025: Delivered onboarding and card lifecycle enhancements, strengthened authentication and provisioning flows, expanded asset support, and added telemetry to enable data-driven decision making. Key outcomes include a refreshed Card onboarding experience (Welcome Screen, UI/UX tweaks, and shared components), a geolocation- and flag-driven Card button on Wallet Home with Redux-based auth integration, a new Card provisioning flow with explicit status warnings, and integrated Solana asset support with authenticated data display. Rewards analytics instrumentation now captures view, claim, and opt-in/out events with updated user traits. Reliability improvementsAddressed NaN handling in Card Home metrics and added priority Add Funds address validation to reduce error leakage. These results improve onboarding conversion, risk controls, and product telemetry, enabling faster, safer iterations across the card feature set. Technologies/skills demonstrated include React Native, Redux-based authentication, Baanx API integration, Solana asset support, UI component design (CardImage, CardWarningBox), localization, testing, and telemetry instrumentation for business decision making.

September 2025

11 Commits • 3 Features

Sep 1, 2025

September 2025 monthly performance summary focusing on delivering business value through stability, UX improvements, and cross-repo integrations. Key work concentrated on Card stability and token flow in metamask-mobile, major Perps UI/UX refinements, and the introduction of Perps deep-link navigation in metamask-extension, accompanied by analytics groundwork and end-to-end tests.

August 2025

10 Commits • 1 Features

Aug 1, 2025

August 2025 monthly summary for metamask-mobile: Card feature rollout and E2E stability improvements across the MetaMask Card initiative. Delivered end-to-end Card functionality with UI and flow enhancements, established caching for token allowances, and improved test reliability.

July 2025

5 Commits • 1 Features

Jul 1, 2025

Monthly performance summary for 2025-07 focused on MetaMask/metamask-mobile. Key feature delivered this month is the Card SDK surface and related APIs enabling card status checks, token information, and batch address checks via the Cardholder API. UI hooks were added for asset balances, allowances, and the priority card token, accompanied by translations to enable card features, token management, and internationalization. These changes advance feature readiness and reduce integration risk for card functionality.

June 2025

2 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for stellar/freighter-mobile: Delivered comprehensive authentication flow documentation for Freighter Mobile, including a Mermaid diagram visualization of the authentication process and a thorough Markdown guide covering security architecture, authentication states and flows (sign-up, sign-in, wallet import), session management, storage details, error handling, and security considerations.

May 2025

4 Commits • 4 Features

May 1, 2025

May 2025 monthly summary for stellar/freighter-mobile focused on delivering user-centric features, multi-network capabilities, and improved transaction visibility, while updating release metadata to reflect a new product cycle. The work enhances authentication flows, network selection, and transaction insights, driving user adoption and operational clarity across mobile platforms.

April 2025

10 Commits • 3 Features

Apr 1, 2025

April 2025 focused on onboarding improvements, wallet interoperability, and asset management in stellar/freighter-mobile, complemented by UI polish and build maintenance. Delivered Import Wallet flow with recovery phrase support and a refactored authentication stack for both new and imported wallets, including secure credential storage, UI updates, error handling, and tests. Enhanced Forgot Password flow with WelcomeScreen redirection and path refinements. Launched Asset Management System enabling balances display, trustline management, and support for custom tokens, with UI refactor, testing, and framework setup. Resolved a visual edge case on BottomSheet and undertook maintenance to refresh dependencies, version codes, build configurations, and log cleanup to improve build reliability. These changes drive higher onboarding conversion, broader wallet compatibility, better asset visibility, and stronger release stability.

March 2025

13 Commits • 4 Features

Mar 1, 2025

March 2025: Focused on multi-language support, onboarding reliability, and platform modernization to enable broader reach and stronger user retention. Delivered foundational i18n groundwork across the Freighter Mobile app, expanded the UI toolkit for better input handling, completed a comprehensive onboarding and wallet creation flow, improved app stability with splash-screen behavior fixes and enhanced auth error visibility, and modernized the platform by upgrading React Native and migrating network state from Redux to Zustand. These efforts reduce onboarding friction, improve global accessibility, and establish a scalable foundation for future features.

February 2025

2 Commits • 2 Features

Feb 1, 2025

February 2025 monthly summary for stellar/freighter-mobile: Implemented two cross-platform features focused on onboarding UX and content usability, with tests and linting improvements to sustain quality and reliability. These changes enhance user onboarding flow and external linking capabilities, contributing to better engagement and developer velocity.

Activity

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Quality Metrics

Correctness92.2%
Maintainability86.6%
Architecture86.2%
Performance83.2%
AI Usage35.4%

Skills & Technologies

Programming Languages

GherkinGradleJSONJavaJavaScriptKotlinMarkdownObjective-CRubySVG

Technical Skills

API IntegrationAnalyticsAndroid DevelopmentAuthenticationBackend DevelopmentBatch ProcessingBlockchain WalletsBuild SystemsCachingCode Ownership ManagementCode RefactoringComponent ArchitectureComponent DesignComponent DevelopmentComponent Library

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

MetaMask/metamask-mobile

Jul 2025 Feb 2026
8 Months active

Languages Used

JSONJavaScriptTypeScriptYAMLJavaKotlinObjective-CSVG

Technical Skills

API IntegrationBatch ProcessingCode Ownership ManagementContext APIDevOpsError Handling

stellar/freighter-mobile

Feb 2025 Jun 2025
5 Months active

Languages Used

JavaScriptKotlinRubySVGSwiftTypeScriptXMLGradle

Technical Skills

Android DevelopmentComponent DevelopmentDependency ManagementNative Module IntegrationReact NativeSplash Screen Implementation

MetaMask/metamask-extension

Sep 2025 Sep 2025
1 Month active

Languages Used

JavaScriptTypeScript

Technical Skills

Deep LinkingFront End DevelopmentJavaScriptTestingTypeScript