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PROFILE

Ysitbon

Yoann Sitbon contributed to LedgerHQ/ledger-live by delivering features and fixes that improved mobile performance, UI reliability, and developer workflows. Over twelve months, Yoann migrated storage systems, modernized state management, and upgraded the React Native architecture, focusing on maintainability and cross-device consistency. He enhanced CI/CD pipelines with GitHub Actions and Fastlane, expanded test coverage, and optimized Android builds for better startup and memory handling. Using TypeScript, React Native, and Kotlin, Yoann addressed layout issues, streamlined onboarding, and improved localization. His work demonstrated depth in architectural refactoring, performance tuning, and automation, resulting in a more robust and scalable mobile application.

Overall Statistics

Feature vs Bugs

68%Features

Repository Contributions

75Total
Bugs
11
Commits
75
Features
23
Lines of code
247,262
Activity Months12

Work History

February 2026

2 Commits • 2 Features

Feb 1, 2026

February 2026 focused on improving mobile startup performance and reliability through targeted feature work and enhanced test coverage. The changes reduce startup friction and stabilize navigation/loading behavior, supporting a smoother user onboarding experience and lower risk of regressions.

January 2026

13 Commits • 4 Features

Jan 1, 2026

January 2026 — Ledger Live (LedgerHQ/ledger-live). This month focused on modernization, performance, and reliability. Key outcomes include a React 19 upgrade with UI dependencies modernized; Android 16KB page size optimization; UI clipping fix in assets/accounts tab; Aleo balance validation fix in ValidateIntent; and expanded E2E testing plus UX enhancements (password field focus) to improve usability and measurable bundle size. These efforts deliver faster startup, smoother mobile performance on Android 15+, more robust transaction validation, and improved testing visibility, driving business value and reducing risk.

December 2025

15 Commits • 3 Features

Dec 1, 2025

December 2025 monthly summary for LedgerLive: consolidated architectural modernization, localization improvements, and stability fixes, enabling faster feature delivery and better internationalization support across Ledger Live. Key outcomes include major state management refactor, i18n upgrades, internal tooling updates, and two critical user-facing fixes for asset rendering and landing page UI. Business value: improved reliability, performance, and developer velocity.

November 2025

9 Commits • 3 Features

Nov 1, 2025

November 2025 Ledger Live: Delivered reliability improvements in CI/QA, expanded test coverage via feature flags for modular drawer, and implemented UI/UX stability improvements across devices. Key fixes included onboarding reliability for nanoSP, input focus handling on the experimental feature screen, and SafeAreaView rendering on Samsung devices in FHD+ mode. Portfolio UI now renders more smoothly with reduced clipping and fewer flaky transitions. These changes improved CI throughput, reduced flaky tests, and enhanced onboarding and cross-device user experiences.

October 2025

1 Commits • 1 Features

Oct 1, 2025

Month 2025-10: Delivered foundational migration to React Native New Architecture for Ledger Live, with significant UI performance enhancements and architecture modernization. Key refactors included navigation updates and streamlined component structures, complemented by the introduction of new UI measurement utilities for responsiveness. No major bugs fixed this month; the focus was on architectural groundwork and long-term maintainability.

September 2025

7 Commits • 2 Features

Sep 1, 2025

September 2025 monthly summary for LedgerHQ/ledger-live focusing on UI stability and maintenance. Delivered cross-device UI consistency and reduced maintenance surface by consolidating SafeAreaView usage, preventing layout overflow on key flows, and removing unused functionality. The changes improve user experience, onboarding reliability, and developer efficiency.

August 2025

3 Commits

Aug 1, 2025

August 2025 monthly summary for LedgerHQ/ledger-live focused on CI/CD reliability and tooling improvements. Delivered reliability fixes to GitHub Actions workflows, refined release signaling by filtering workflow runs to the main branch for the latest successful releases, and aligned build tooling through renaming binaries related to CPU features and SSH crypto. These changes improved reporting accuracy, notifications, and overall release confidence.

July 2025

9 Commits • 4 Features

Jul 1, 2025

July 2025 monthly summary for LedgerHQ/ledger-live focusing on mobile CI improvements, safer pipeline testing, and platform upgrades. Key outcomes include robust mobile performance testing in CI, safer pipeline runs with a dry-run mode, UX improvements in PIN handling, and platform modernization (Android API 35 and React Navigation 7). These efforts improved release confidence, reduced risk, and maintained compatibility with the latest mobile ecosystems.

June 2025

2 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for LedgerHQ/ledger-live: Focused on delivering mobile CI enhancements to expand build formats and testing coverage, and on stabilizing the nightly pipeline with a reusable performance testing workflow. The work delivered aligns with business goals of faster release cycles, improved distribution options, and more reliable performance validation.

May 2025

1 Commits

May 1, 2025

May 2025 – LedgerHQ/ledger-live: Lockfile maintenance and dependency alignment. Updated pnpm-lock.yaml to resolve and align dependency versions across storyly-web, @jest/types, and various LedgerHQ packages, refreshing development dependencies to preserve project integrity. This reduces drift, stabilizes builds, and improves cross-package compatibility. Commit: 7bb32974edc9aef460d78939c8a495595e8d55a3.

April 2025

10 Commits • 2 Features

Apr 1, 2025

In April 2025, Ledger Live delivered two high-impact features and completed a mobile storage migration, boosting user experience and reliability. Key features delivered: Graph Pointer Positioning Enhancement, refactoring the graph component to support xOffset and yOffset for precise pointer positioning, improving accuracy and visualization; Storage Migration to MMKV and Migration Tooling, migrating local storage from AsyncStorage to MMKV across Ledger Live Mobile, with wrappers, migration scripts, a debug UI for migration/rollback/reset, and feature-flag controls. Major bugs fixed: improved cartesian coordinate calculation for the graph pointer to ensure pointer accuracy (#9767). Overall impact: enhanced data visualization fidelity, faster and safer storage readiness for mobile experiences, and more controllable rollout via feature flags and debug tooling. Technologies/skills demonstrated: React Native component refactoring, MMKV integration, migration tooling and scripting, feature toggles, debug UI development, linting and changeset discipline, and cross-team collaboration on migration tooling.

March 2025

3 Commits • 1 Features

Mar 1, 2025

Month: 2025-03 | LedgerHQ/ledger-live Key features delivered: - Portfolio Graph Click Analytics (Ledger Live mobile): added analytics to track user interactions with the portfolio graph to enable engagement insights. Commit: 5b4f62bb6ac0d9da179a398b41b90d899175d167 Major bugs fixed: - Ledger Live Desktop Error Modal Layout Bug Fix: refactored the error modal button container to ButtonGroup, improving spacing and alignment. Commit: e217eb34c98df0baa91aea99f953a95cd2592d29 - Recover Screen Post-Onboarding Redirect Bug Fix: corrected deep linking and post-onboarding redirection to prevent unwanted rendering after onboarding. Commit: 5d10594b4c2754102722f6b4bb6ecb9aac1c1914 Overall impact and accomplishments: - Improved user experience and reliability across desktop and mobile by stabilizing error handling, onboarding flows, and adding engagement analytics. - Enabled data-driven decisions for portfolio visualization usage through analytics instrumentation. Technologies/skills demonstrated: - React UI patterns (ButtonGroup) and UI/UX refinements - Deep linking and post-onboarding flow logic - Analytics instrumentation and event tracking - Focus on business value and end-user impact

Activity

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Quality Metrics

Correctness87.0%
Maintainability84.8%
Architecture83.0%
Performance83.0%
AI Usage25.4%

Skills & Technologies

Programming Languages

GradleGroovyJSONJavaJavaScriptKotlinMarkdownObjective-CObjective-C++Ruby

Technical Skills

API DevelopmentAPI IntegrationAnalyticsAndroid DevelopmentAndroid developmentAnimationAsyncStorageBuild ConfigurationBuild System ConfigurationCI/CDChangelog ManagementCode CleanupCode RefactoringComponent ManagementComponent Styling

Repositories Contributed To

1 repo

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

LedgerHQ/ledger-live

Mar 2025 Feb 2026
12 Months active

Languages Used

JavaScriptTypeScriptMarkdownObjective-CObjective-C++SwiftYAMLRuby

Technical Skills

AnalyticsComponent StylingFront End DevelopmentMobile DevelopmentReactReact Native

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