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Mateusz Domański

PROFILE

Mateusz Domański

Mateusz Domanski contributed to LedgerHQ/ledger-live by engineering end-to-end Hedera blockchain support, including staking, token association, ERC20 integration, and transaction processing. He architected robust backend and frontend flows using TypeScript, React, and Node.js, focusing on modular coin support and reliable data retrieval. His work included modernizing transaction serialization, implementing comprehensive integration and unit tests, and enhancing UI/UX for both desktop and mobile. By refactoring core modules and strengthening validation, he improved maintainability and reduced risk of regression. Mateusz’s approach emphasized production readiness, compatibility enforcement, and localization, resulting in broader asset coverage and a more resilient Hedera integration.

Overall Statistics

Feature vs Bugs

83%Features

Repository Contributions

47Total
Bugs
4
Commits
47
Features
20
Lines of code
34,401
Activity Months8

Work History

November 2025

7 Commits • 5 Features

Nov 1, 2025

November 2025 Monthly Summary for Ledger Live (LedgerHQ/ledger-live). Focused on expanding Hedera network capabilities and reinforcing app safety. Key deliveries include Hedera staking support with delegation and rewards UI, Hedera ERC20 token support in the coin-hedera module (transfers, fee estimation, EVM address verification alerts), enforcement of minimum Hedera app version (initially 1.8.5, later updated to 1.9.0) to ensure compatibility, retrieval of Hedera getBlock data (with transactions and tests), and UI localization improvements using the useLocalizedUrl hook. These changes broaden supported assets, improve reliability, and enable more accurate data flows, delivering direct business value through safer updates, richer asset support, and improved localization.

October 2025

12 Commits • 3 Features

Oct 1, 2025

Month 2025-10: Key Hedera work in Ledger Live focused on end-to-end Hedera coin support, API/Network transaction processing modernization, and stability improvements. Delivered a major Alpaca integration overhaul, enhanced operation listing with robust pagination, modernized network/transaction processing, and added synthetic block support for Hedera transactions. These changes align with the new architecture and testing framework, improve production readiness, and reduce risk in handling fees, hashes, and memos.

September 2025

4 Commits • 3 Features

Sep 1, 2025

Monthly summary for 2025-09 focused on Hedera-related improvements in Ledger Live. Delivered core validation/testing improvements, token association operation support, and UI stability enhancements to improve reliability and user experience in Hedera flows. Substantial business value through more robust validation, clearer transaction categorization, and resilient UI behavior.

August 2025

5 Commits • 2 Features

Aug 1, 2025

August 2025 performance summary for Ledger Live (LedgerHQ/ledger-live). The month focused on strengthening Hedera HTS token handling and reliability in the coin module, expanding test coverage, and aligning test infrastructure with Hedera flows. Key outcomes include robustness improvements for HTS token operations in bot and bridge contexts, updated transfer fee calculations, and new device actions to support token association and transfers.

July 2025

2 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary for LedgerHQ/ledger-live focusing on key features delivered and bugs fixed, with impact and technologies demonstrated. The work emphasizes business value through improved transaction UX and more robust Hedera integration.

June 2025

10 Commits • 3 Features

Jun 1, 2025

In 2025-06, delivered comprehensive Hedera work across Ledger Live, significantly expanding asset support, data reliability, and end-to-end user experience. Key UX and integration work spanned desktop/mobile token association flows, CAL token management, swaps, and data retrieval reliability: - Hedera token association UX flow deployed on Desktop and Mobile, with unsigned transaction construction, status handling, and UI updates. - Hedera token integration in CAL, including token definitions, importer, tests, and HTS token send/receive logic, enabling seamless Hedera asset management within Crypto Asset Ledger. - Hedera token swaps support implemented (HBAR) with UI, coin modules, end-to-end tests, and integration with Ledger Trust Service for secure swap operations. - Hedera transaction data retrieval reliability improved by fixing the mirror node pagination loop to guarantee complete data fetch. Overall impact: broader Hedera coverage across Ledger Live, improved user experience, more robust transaction data, and strengthened security for Hedera-related operations.

May 2025

6 Commits • 2 Features

May 1, 2025

May 2025 performance review: Ledger Live Hedera integration delivered concrete business-value improvements through feature enhancements, reliability boosts, and expanded test coverage. Implemented Hedera Transaction Explorer enhancements with richer transaction data, centralized explorer logic in a shared module, and optimized Hedera transaction retrieval with faster, more robust data fetches and comprehensive tests. These changes improve data accuracy, performance, and maintainability for Ledger Live's Hedera integration.

April 2025

1 Commits • 1 Features

Apr 1, 2025

April 2025 monthly summary for LedgerHQ/wallet-api. Focused on expanding network support and establishing a solid Hedera integration foundation. Delivered Hedera Transaction Support by introducing HederaTransaction and RawHederaTransaction types, along with serialization/deserialization tests that cover amounts, recipients, and optional memo fields. This work provides a type-safe basis for Hedera transfers and enables future end-to-end Hedera transaction flows.

Activity

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Quality Metrics

Correctness90.0%
Maintainability87.2%
Architecture86.6%
Performance82.2%
AI Usage23.4%

Skills & Technologies

Programming Languages

CSSJavaScriptMJSMarkdownReactTypeScripttsx

Technical Skills

API DevelopmentAPI IntegrationAPI Integration TestingAPI developmentBackend DevelopmentBigNumberBlockchainBlockchain DevelopmentCI/CDChangelog ManagementCode CleanupCode RefactoringCoin ModulesCryptocurrency IntegrationCryptocurrency Wallets

Repositories Contributed To

2 repos

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

LedgerHQ/ledger-live

May 2025 Nov 2025
7 Months active

Languages Used

JavaScriptTypeScriptMJSMarkdowntsxCSSReact

Technical Skills

API IntegrationAPI Integration TestingBackend DevelopmentBigNumberCode RefactoringCoin Modules

LedgerHQ/wallet-api

Apr 2025 Apr 2025
1 Month active

Languages Used

MarkdownTypeScript

Technical Skills

API DevelopmentFull stack developmentTestingTransaction Serialization

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