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Amitabh Aggarwal

PROFILE

Amitabh Aggarwal

Amitabh Aggarwal engineered core features and enhancements for MetaMask/metamask-mobile, focusing on cross-chain asset management, DeFi earning flows, and bridge UI reliability. He developed multichain balance aggregation, bridge transaction deep linking, and robust staking interfaces using TypeScript, React Native, and Redux. His work included performance optimizations, error handling improvements, and feature flag-driven rollouts, ensuring scalable and maintainable code. Amitabh addressed bugs affecting token normalization and cross-network compatibility, implemented analytics instrumentation, and contributed to backend controller logic. His contributions demonstrated depth in full stack development, balancing user experience improvements with technical rigor across mobile and core repositories for MetaMask.

Overall Statistics

Feature vs Bugs

61%Features

Repository Contributions

60Total
Bugs
13
Commits
60
Features
20
Lines of code
40,702
Activity Months14

Work History

February 2026

4 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for MetaMask/metamask-mobile focusing on key accomplishments, bugs fixed, and overall impact. Highlights include analytics instrumentation improvements, error-logging noise reduction, and navigation/UX fixes in Unified Buy V2.

November 2025

2 Commits • 1 Features

Nov 1, 2025

Month 2025-11 — MetaMask/metamask-mobile delivered two critical improvements to the deposit flow and enhanced error handling for Transak-related scenarios. The changes reduce user friction, improve reliability during deposits, and strengthen error visibility for support and telemetry.

September 2025

5 Commits • 2 Features

Sep 1, 2025

Sep 2025 performance highlights across MetaMask extensions, core, and mobile. Delivered security and UX improvements, reduced duplication, and improved real-time balance visibility across products.

August 2025

8 Commits • 3 Features

Aug 1, 2025

August 2025 performance summary: Delivered cross-chain balance aggregation core for MetaMask/core, enabling unified total holdings view across networks by introducing multichain balance selectors for account groups and wallets, a central balance calculator with network filtering, and support for native-chain and staked balances. This work was accompanied by tests, changelog updates, dependency refreshes, and multi-release deployments (including Release 491.0.0, 503.0.0, and 519.0.0). In MetaMask/metamask-mobile, added deep link support for bridge transactions to allow pre-filled tokens and amounts and enable network switching based on token chains; introduced Wallet Home aggregated balance/portfolio display behind a feature flag with new selectors and UI wiring. Overall, the month delivered substantial business value by providing a unified, accurate view of holdings across chains and improved mobile onboarding for external bridges.

July 2025

2 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary focusing on performance optimization and data normalization for MetaMask Mobile. Delivered a major token processing performance improvement in SwapsController and fixed CAIP normalization-related deduplication in the bridge destination token selector. These changes enhance user experience for portfolios with many tokens and improve cross-bridge token consistency, reliability, and maintainability.

June 2025

1 Commits

Jun 1, 2025

June 2025 — MetaMask Mobile engineering: Delivered a critical Bridge bug fix to Solana asset viewing by CAIP-formatting addresses, preserving backward compatibility and improving stability. The change aligns with cp-7.47.3, addresses issue #16770, and reduces crash risk across Solana asset flows. Result: more reliable cross-chain asset viewing and improved user trust.

May 2025

7 Commits • 3 Features

May 1, 2025

May 2025 monthly summary for MetaMask Mobile: Bridges improvements focused on user experience, reliability, and environment parity. Key outcomes include UI/UX enhancements to the Bridge screen (preventing same-chain toggle issues, improved slippage controls including auto slippage, broader UI refinements, and a fee disclosure), a longer default quote refresh cadence (30s) with dynamic handling in QuoteExpiredModal, environment-aware Bridge API base URL selection, and a fix to prevent stale quotes after token swaps. These changes improve transparency, quote accuracy, and cross-environment routing, delivering clearer pricing and more reliable on-chain swaps. Technologies demonstrated include React Native UI work, state management, dynamic configuration, and robust quote handling.

April 2025

10 Commits • 1 Features

Apr 1, 2025

April 2025 monthly summary for metamask-mobile: Delivered a major Bridge UI and Quote System overhaul with real-time quotes, price impact, and delivery estimates, added Solana destination support, integrated network fee estimation, and refined input handling and error messaging. Implemented quote expiration handling and keyboard stability improvements; enabled bridge UI tests in CI. Completed code quality improvements with lint fixes across UI components and improved analytics accuracy for banner tracking.

March 2025

6 Commits • 2 Features

Mar 1, 2025

March 2025 monthly summary for metamask-mobile: Delivered end-to-end Bridge UI and core bridge workflow, plus foundational UI library enhancements to support a scalable cross-chain experience. Implemented BridgeController and BridgeStatusController groundwork, integrated SlippageModal, QuoteInfoModal, and QuoteDetailsCard with Redux and navigation wiring to enable bridge transactions and detailed quote displays. Added ButtonToggle and SegmentedControl components with Storybook support to standardize UI patterns and accelerate feature delivery.

February 2025

1 Commits • 1 Features

Feb 1, 2025

February 2025: Delivered a new UI component for stablecoin lending input and implemented safe rollout mechanisms in metamask-mobile. Focused on UX clarity, data visibility, and maintainability with feature flag controls.

January 2025

4 Commits • 2 Features

Jan 1, 2025

January 2025 focused on delivering feature flags for emerging stablecoin lending, stabilizing DeFi UX on unsupported networks, and establishing a robust backend facade for earning opportunities. Key outcomes include a new feature flag for the stablecoin lending UI, a fix and test improvements for Earn navigation on networks that do not support staking (ensuring safe fallback to mainnet), and the introduction of the EarnController package in core to manage DeFi earning opportunities with state management and stake-sdk integration. These efforts improve rollout safety, UX reliability, and create a scalable foundation for new revenue-generating products.

December 2024

2 Commits • 1 Features

Dec 1, 2024

December 2024 monthly summary for MetaMask/metamask-mobile focusing on delivering user-facing input improvements and stabilizing staking-related API flows. Key features shipped and critical bugs resolved, with emphasis on business value, system reliability, and demonstrated technical proficiency.

November 2024

6 Commits • 1 Features

Nov 1, 2024

2024-11 performance summary for metamask-mobile: Delivered a major staking UX and architecture overhaul with a Redux-based PooledStaking slice, updated hooks and tests, enabling safer, stateful staking interactions and easier maintainability. Implemented user-facing UX improvements across staking, including simplified eligibility checks, visible unstaking times on stake confirmations, dynamic StakeButton labeling based on pooled staking, and improved input handling (12-digit limit) with updated colors and text formatting. Added loading skeletons for staking banners to improve perceived performance during data fetch. All changes are behind a feature flag (pooled staking) with updated tests. This work reduces user confusion, accelerates staking onboarding, and enhances maintainability.

October 2024

2 Commits • 1 Features

Oct 1, 2024

October 2024 monthly summary for MetaMask mobile: Delivered Staking Experience Enhancements including a gas-fee-aware max stake tooltip, Android staking UI fixes, and safety improvements to prevent duplicate claims, plus rollout of mobile native pooled staking via feature flag enabling non-US/UK users to access the new staking interface directly in the mobile app. These changes improve usability, reduce errors, increase regional accessibility, and support higher staking activity. Commits: 82aec27ccc3328db00973e0a1b0d38fcbc64eb41; 93013fce4c84d6fa77b41fe2121eeccfd988aa8a.

Activity

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Quality Metrics

Correctness94.0%
Maintainability90.2%
Architecture89.0%
Performance85.6%
AI Usage26.6%

Skills & Technologies

Programming Languages

BashGherkinJSONJavaJavaScriptMarkdownTypeScriptYAMLjsts

Technical Skills

API IntegrationAnalyticsBackend DevelopmentBug FixingCI/CD ConfigurationChangelog ManagementCode NormalizationCode OrganizationCode QualityCode StandardizationComponent DesignComponent DevelopmentComponent LibraryComponent RefactoringComponent Styling

Repositories Contributed To

3 repos

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

MetaMask/metamask-mobile

Oct 2024 Feb 2026
14 Months active

Languages Used

JavaJavaScriptTypeScriptYAMLJSONtsxMarkdownjs

Technical Skills

Configuration ManagementGas Fee EstimationJavaScriptMobile DevelopmentReact NativeSmart Contract Interaction

MetaMask/core

Jan 2025 Sep 2025
3 Months active

Languages Used

JavaScriptTypeScriptJSONMarkdown

Technical Skills

API IntegrationController DevelopmentFull Stack DevelopmentJavaScriptNode.jsState Management

MetaMask/metamask-extension

Sep 2025 Sep 2025
1 Month active

Languages Used

JavaScriptTypeScript

Technical Skills

Dependency ManagementJavaScript DevelopmentReactReduxSecurity UpdatesTesting

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