LedgerHQ/ledger-live
Oct 2024 – Jan 2026
12 Months active
Languages Used
CSSJavaScriptProtobufTypeScriptYAMLJSONShelltsx
Technical Skills
API IntegrationAccessibilityBuild ToolsCI/CDDependency ManagementError Handling
Kevin Le Seigle
PROFILE
Kevin Le Seigle
Kevin Le Seigle contributed to the LedgerHQ/ledger-live repository over twelve months, delivering features and fixes that improved stability, compliance, and user experience across mobile and desktop platforms. He engineered solutions for localization, performance optimization, and regulatory compliance, such as lazy-loading locale data for Android and implementing OFAC-aware currency restrictions. Using TypeScript, React, and React Native, Kevin refactored core modules to reduce technical debt, enhanced CI/CD pipelines, and upgraded dependencies for security and maintainability. His work demonstrated depth in cross-platform development, dependency management, and internationalization, resulting in a more reliable, performant, and maintainable codebase for Ledger Live.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
53Total
Bugs
7
Commits
53
Features
21
Lines of code
74,450
Activity Months12
Your Network
256 people
Work History
January 2026
7 Commits • 4 Features
Jan 1, 2026Month: 2026-01 — LedgerHQ/ledger-live: Delivered major localization and maintainability improvements with a focus on i18n consistency, reduced coupling, and clearer ownership. These changes enhance localization reliability, developer experience, and maintenance velocity, enabling safer, faster feature delivery across the app.
7 Commits • 4 Features
Jan 1, 2026Month: 2026-01 — LedgerHQ/ledger-live: Delivered major localization and maintainability improvements with a focus on i18n consistency, reduced coupling, and clearer ownership. These changes enhance localization reliability, developer experience, and maintenance velocity, enabling safer, faster feature delivery across the app.
January 2026
December 2025
1 Commits • 1 Features
Dec 1, 2025In 2025-12, Ledger Live mobile team delivered a critical SDK upgrade to Braze v18.0 to boost engagement analytics and performance. The upgrade unlocks new features, bug fixes, and improved analytics accuracy for user segmentation and retention. Delivered via a focused dependency bump to minimize risk and surface area.
December 2025
1 Commits • 1 Features
Dec 1, 2025In 2025-12, Ledger Live mobile team delivered a critical SDK upgrade to Braze v18.0 to boost engagement analytics and performance. The upgrade unlocks new features, bug fixes, and improved analytics accuracy for user segmentation and retention. Delivered via a focused dependency bump to minimize risk and surface area.
November 2025
3 Commits • 2 Features
Nov 1, 2025Month 2025-11 — Ledger Live development focusing on reducing surface area and improving startup performance. Key actions include removing the Storyly integration from Ledger Live Mobile and refactoring the native startup-time monitoring module to simplify tracking. These changes reduce maintenance overhead, minimize runtime dependencies, and lay groundwork for faster startup and more predictable behavior across platforms.
3 Commits • 2 Features
Nov 1, 2025Month 2025-11 — Ledger Live development focusing on reducing surface area and improving startup performance. Key actions include removing the Storyly integration from Ledger Live Mobile and refactoring the native startup-time monitoring module to simplify tracking. These changes reduce maintenance overhead, minimize runtime dependencies, and lay groundwork for faster startup and more predictable behavior across platforms.
November 2025
October 2025
1 Commits • 1 Features
Oct 1, 2025Month 2025-10: Key features delivered and major fixes focused on performance and user experience for LedgerHQ/ledger-live. Key features delivered: Intl locale data lazy-loading to speed startup on low-end Android devices by dynamically loading locale data and polyfills only as needed. Major bugs fixed: optimized Intl polyfills path to reduce startup overhead on constrained devices. Overall impact: faster startup, smoother UX, and improved onboarding for users on older Android devices, enabling broader adoption. Technologies/skills demonstrated: performance engineering (lazy-loading, dynamic imports), polyfill optimization, Android device constraint handling, and maintainable code changes.
October 2025
1 Commits • 1 Features
Oct 1, 2025Month 2025-10: Key features delivered and major fixes focused on performance and user experience for LedgerHQ/ledger-live. Key features delivered: Intl locale data lazy-loading to speed startup on low-end Android devices by dynamically loading locale data and polyfills only as needed. Major bugs fixed: optimized Intl polyfills path to reduce startup overhead on constrained devices. Overall impact: faster startup, smoother UX, and improved onboarding for users on older Android devices, enabling broader adoption. Technologies/skills demonstrated: performance engineering (lazy-loading, dynamic imports), polyfill optimization, Android device constraint handling, and maintainable code changes.
August 2025
1 Commits • 1 Features
Aug 1, 2025Monthly summary for 2025-08 focused on policy wording clarifications for geoblocking in Ledger Live, with emphasis onUX clarity and compliance.
1 Commits • 1 Features
Aug 1, 2025Monthly summary for 2025-08 focused on policy wording clarifications for geoblocking in Ledger Live, with emphasis onUX clarity and compliance.
August 2025
July 2025
1 Commits
Jul 1, 2025Month: 2025-07 | LedgerHQ/ledger-live Summary: - Delivered a critical stability fix for LiveConfig imports across ledger-live-common and coin-framework, eliminating broken references and access issues that could cause runtime failures in wallet features. Included a build-related improvement addressing a broken LLD issue on the develop branch to restore reliable builds. - Impact: reduces import-related errors in production and CI, improves developer productivity, and clears blockers for ongoing feature work in Ledger Live. - Technologies/skills demonstrated: JavaScript/TypeScript monorepo, cross-package import resolution, debugging and stabilization of build/test pipelines, and multi-repo coordination. Commit reference for the fix: 117dbb478bc21e3d08f520a93701cb7f4e5fc375
July 2025
1 Commits
Jul 1, 2025Month: 2025-07 | LedgerHQ/ledger-live Summary: - Delivered a critical stability fix for LiveConfig imports across ledger-live-common and coin-framework, eliminating broken references and access issues that could cause runtime failures in wallet features. Included a build-related improvement addressing a broken LLD issue on the develop branch to restore reliable builds. - Impact: reduces import-related errors in production and CI, improves developer productivity, and clears blockers for ongoing feature work in Ledger Live. - Technologies/skills demonstrated: JavaScript/TypeScript monorepo, cross-package import resolution, debugging and stabilization of build/test pipelines, and multi-repo coordination. Commit reference for the fix: 117dbb478bc21e3d08f520a93701cb7f4e5fc375
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025 — LedgerHQ/ledger-live: Key CI/CD optimizations and a critical security patch completed. Focused on releasing faster, safer software with minimal risk and operational overhead.
3 Commits • 1 Features
Mar 1, 2025March 2025 — LedgerHQ/ledger-live: Key CI/CD optimizations and a critical security patch completed. Focused on releasing faster, safer software with minimal risk and operational overhead.
March 2025
February 2025
12 Commits • 3 Features
Feb 1, 2025February 2025: Ledger Live – Key deliverables, fixes, and impact across the platform. Key features delivered: - OFAC Compliance: Region and Currency Restrictions, and Counter Value Handling. Enforced OFAC-compliant region selection, removed OFAC-sanctioned currencies from supported fiat options, and implemented a fallback to USD for counter values when an OFAC currency is detected. Commits: 28d1b915db6e1f84220fd4aa6ae9674e44cdaf4c; e0a2c9954b56a5d6f11203f651dbdb654e51e8c8; 4ab8e688707d71e2363444147b49d09f5eee088. - Ledger Live Mobile: Use Shared Counter Values from Common Module. Synchronizes counter value calculations with the shared list of supported counter values from the common module to ensure up-to-date data. Commit: 175683f65ddfddbcbd39a9b4e0afb315ffdd95bd. - NFT Spam Filtering and Testing Enhancements: Adds batch updates for NFT collection spam status, a debug tool to reset NFT anti-spam status, fixes NFT gallery filtering, and includes related test and lint improvements. Commits: 69bfe84f02a77a43f670c2c0958c7cb6bfae983b; ee3c24f0a0e2239ccb11a69220aca4067f71b79b; 143e3143f127045303ed6a17b734e7cf60faa3de; 17599a6f36a852f6b01b79cac83722aff41576e6; c1fa4829676621a1160845b8e3043eab26a4f71a. - Portfolio UI and Operations Stability: Bug fixes to transaction ordering in the portfolio view and prevention of rendering issues when there are no accounts or operations; includes cleanup of unnecessary debug logs for clearer UX. Commits: cf0a9783d58dd0f9fc0935f8c7650d28b10611ff; 5fc1cbbafacb627872b21b55eec4c6e4fd8a196a. - Testing Stability: sortByMarketCap Tests. Stabilizes sortByMarketCap tests by asserting the primary element (bitcoin) and reducing brittleness to unrelated order changes. Commit: 2db09792e217a2ba6afc1feb3680ade4be71308a. Major bugs fixed: - Portfolio UI: Fixed transaction ordering and rendering edge cases when accounts or operations are absent; removed noisy debug logs to improve UX. - Testing: Stabilized sortByMarketCap tests to reduce brittleness and improve reliability across runs. Overall impact and accomplishments: - Strengthened regulatory compliance and risk management through OFAC-aware feature delivery, reducing exposure to sanctioned currencies. - Improved data accuracy and consistency across platforms by aligning counter values with a shared common module. - Enhanced product reliability and developer velocity through targeted UI stability work and stronger test/lint hygiene. - Elevated user experience via cleaner UX, fewer rendering edge cases, and reduced console noise. Technologies and skills demonstrated: - Cross-module data sharing and synchronization (shared/common module integration). - Compliance engineering (OFAC rules) and data sanitization. - Frontend stability and UX improvement (portfolio view, NFT gallery, and logs cleanup). - Test reliability and lint/config hygiene improvements (lint fixes, test updates). - NFT anti-spam tooling and automated testing support.
February 2025
12 Commits • 3 Features
Feb 1, 2025February 2025: Ledger Live – Key deliverables, fixes, and impact across the platform. Key features delivered: - OFAC Compliance: Region and Currency Restrictions, and Counter Value Handling. Enforced OFAC-compliant region selection, removed OFAC-sanctioned currencies from supported fiat options, and implemented a fallback to USD for counter values when an OFAC currency is detected. Commits: 28d1b915db6e1f84220fd4aa6ae9674e44cdaf4c; e0a2c9954b56a5d6f11203f651dbdb654e51e8c8; 4ab8e688707d71e2363444147b49d09f5eee088. - Ledger Live Mobile: Use Shared Counter Values from Common Module. Synchronizes counter value calculations with the shared list of supported counter values from the common module to ensure up-to-date data. Commit: 175683f65ddfddbcbd39a9b4e0afb315ffdd95bd. - NFT Spam Filtering and Testing Enhancements: Adds batch updates for NFT collection spam status, a debug tool to reset NFT anti-spam status, fixes NFT gallery filtering, and includes related test and lint improvements. Commits: 69bfe84f02a77a43f670c2c0958c7cb6bfae983b; ee3c24f0a0e2239ccb11a69220aca4067f71b79b; 143e3143f127045303ed6a17b734e7cf60faa3de; 17599a6f36a852f6b01b79cac83722aff41576e6; c1fa4829676621a1160845b8e3043eab26a4f71a. - Portfolio UI and Operations Stability: Bug fixes to transaction ordering in the portfolio view and prevention of rendering issues when there are no accounts or operations; includes cleanup of unnecessary debug logs for clearer UX. Commits: cf0a9783d58dd0f9fc0935f8c7650d28b10611ff; 5fc1cbbafacb627872b21b55eec4c6e4fd8a196a. - Testing Stability: sortByMarketCap Tests. Stabilizes sortByMarketCap tests by asserting the primary element (bitcoin) and reducing brittleness to unrelated order changes. Commit: 2db09792e217a2ba6afc1feb3680ade4be71308a. Major bugs fixed: - Portfolio UI: Fixed transaction ordering and rendering edge cases when accounts or operations are absent; removed noisy debug logs to improve UX. - Testing: Stabilized sortByMarketCap tests to reduce brittleness and improve reliability across runs. Overall impact and accomplishments: - Strengthened regulatory compliance and risk management through OFAC-aware feature delivery, reducing exposure to sanctioned currencies. - Improved data accuracy and consistency across platforms by aligning counter values with a shared common module. - Enhanced product reliability and developer velocity through targeted UI stability work and stronger test/lint hygiene. - Elevated user experience via cleaner UX, fewer rendering edge cases, and reduced console noise. Technologies and skills demonstrated: - Cross-module data sharing and synchronization (shared/common module integration). - Compliance engineering (OFAC rules) and data sanitization. - Frontend stability and UX improvement (portfolio view, NFT gallery, and logs cleanup). - Test reliability and lint/config hygiene improvements (lint fixes, test updates). - NFT anti-spam tooling and automated testing support.
January 2025
4 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for LedgerHQ/ledger-live focusing on performance and tooling improvements. Delivered iOS-specific performance optimizations for Braze-powered LLM interactions and extended log handling to TXT format with viewer support, enabling smoother cross-platform workflow and improved developer tooling. These changes reduce unnecessary re-renders, speed up LLM interactions on iOS, and improve interoperability with Ledger Live Desktop and external LLMs. This month demonstrates strong proficiency in React/Redux optimization, cross-format IO, and tooling enhancements that drive business value through faster user experiences and better log accessibility.
4 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for LedgerHQ/ledger-live focusing on performance and tooling improvements. Delivered iOS-specific performance optimizations for Braze-powered LLM interactions and extended log handling to TXT format with viewer support, enabling smoother cross-platform workflow and improved developer tooling. These changes reduce unnecessary re-renders, speed up LLM interactions on iOS, and improve interoperability with Ledger Live Desktop and external LLMs. This month demonstrates strong proficiency in React/Redux optimization, cross-format IO, and tooling enhancements that drive business value through faster user experiences and better log accessibility.
January 2025
December 2024
7 Commits • 3 Features
Dec 1, 2024December 2024 performance summary for Ledger Live: Security, stability, and technical debt focus across the Ledger Live monorepo. Key changes include LLM/LLD dependency updates, HTTPS migration for signature downloads, and stabilization work around memo/tag input handling (including a debounce experiment that was reverted to preserve stable Casper/XRP behavior).
December 2024
7 Commits • 3 Features
Dec 1, 2024December 2024 performance summary for Ledger Live: Security, stability, and technical debt focus across the Ledger Live monorepo. Key changes include LLM/LLD dependency updates, HTTPS migration for signature downloads, and stabilization work around memo/tag input handling (including a debounce experiment that was reverted to preserve stable Casper/XRP behavior).
November 2024
4 Commits • 1 Features
Nov 1, 2024Concise monthly summary for LedgerHQ/ledger-live (2024-11): Delivered major dependency and stability work across the monorepo, fixed a runtime import bug, and enhanced overall code health. Focused on delivering business value through stable dependencies, improved developer experience, and increased reliability across projects.
4 Commits • 1 Features
Nov 1, 2024Concise monthly summary for LedgerHQ/ledger-live (2024-11): Delivered major dependency and stability work across the monorepo, fixed a runtime import bug, and enhanced overall code health. Focused on delivering business value through stable dependencies, improved developer experience, and increased reliability across projects.
November 2024
October 2024
9 Commits • 2 Features
Oct 1, 2024Month: 2024-10 — LedgerHQ/ledger-live: focused on UI/UX polish for light mode, test reliability, and build tooling to improve stability and cross-environment consistency. Delivered concrete UI fixes, stabilized tests by ensuring locale mocks, and upgraded build/dependency tooling to enhance reproducibility and performance.
October 2024
9 Commits • 2 Features
Oct 1, 2024Month: 2024-10 — LedgerHQ/ledger-live: focused on UI/UX polish for light mode, test reliability, and build tooling to improve stability and cross-environment consistency. Delivered concrete UI fixes, stabilized tests by ensuring locale mocks, and upgraded build/dependency tooling to enhance reproducibility and performance.
Activity
Loading activity data...
Quality Metrics
Correctness88.6%
Maintainability88.2%
Architecture83.0%
Performance85.0%
AI Usage21.8%
Skills & Technologies
Programming Languages
CSSJSONJavaScriptKotlinObjective-CProtobufShellSwiftTypeScriptYAML
Technical Skills
API IntegrationAccessibilityAndroid developmentBug FixBuild ToolsCI/CDConfigurationConfiguration ManagementDependency ManagementDesktop DevelopmentESLintError HandlingFront End DevelopmentFront-end DevelopmentFrontend Development
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline