February 2026 was a productivity and quality acceleration month across LedgerHQ/device-sdk-ts and LedgerHQ/ledger-live. Delivered user-centric log diagnostics, modernized sample app UI, and robust DevTools enhancements; implemented governance improvements for PR validation, updated documentation, and fixed key stability bugs to improve release confidence and developer velocity.

January 2026 monthly performance summary for LedgerHQ engineering. Delivered high-impact features and reliability improvements across Ledger Live and device-sdk-ts, strengthened automated testing, and advanced DevTools capabilities. Focused on business value through increased device reliability, faster integration cycles, and improved developer experience across platforms. Key features delivered: - Ledger Live: Device Lock Polling UX and Reliability Enhancements with enhanced error handling, retry logic, improved user feedback for PeerRemovedPairing, plus testing coverage and hook mocks. - Ledger Live: BLE Testing Infrastructure and Maintenance with mocks, end-to-end test support, dependency cleanups, removal of legacy transport code, and related test/config improvements. - Device SDK TS: pnpm lockfile maintenance and CI workflows to keep dependencies stable. - DevTools UI and Core: Dashboard navigation and sessions, logger refactor and message types, and DMK inspector module to improve device session visibility and debugging. - DevTools: Device discovery and dashboard integration, including DiscoveryHandler extraction and dashboard messaging refinements. - Ledger Wallet (device actions): Core device actions package, Background Image commands, Custom Lock Screen actions and utilities, plus CLS documentation and naming consistency improvements. Major bugs fixed: - CI: Fixed type errors and missing tests to stabilize the pipeline and ensure reliable snapshots when releasing devtools packages. - Sample/UI: Fix SSR build error by dynamic importing react-lottie and subsequent performance optimizations for list rendering. - Lifecycle messaging: Ensure messages are only sent when the other side is ready to prevent race conditions in DevTools Rozenite workflows. - CLS: Remove impossible error CLS_ERROR_PIN_NOT_SET and rename command GetCustomImageSizeCommand to GetBackgroundImageSizeCommand for correct naming. Overall impact and accomplishments: - Significantly increased development velocity through improved test coverage, mocks, and stable CI. - Improved device reliability and user feedback in critical flows, reducing support overhead and enhancing onboarding for first-time users. - Strengthened DevTools capabilities for better device session visibility, debugging, and dashboard workflows across mobile and desktop. Technologies/skills demonstrated: - TypeScript, React/React Native, and modern Jest-based testing with mocks and e2e support. - pnpm lockfile maintenance, changesets, linting, and CI configuration. - Architecture documentation, module refactors, and module discovery patterns (DiscoveryHandler, inspector modules). - BLE transport mocks, APDU/UI refactors, and cross-repo coordination for DevTools and samples.

December 2025 monthly summary for LedgerHQ. Delivered cross-repo features and tooling across ledger-live and device-sdk-ts with a strong focus on business value, reliability, and developer productivity. Key outcomes include a unified OS update flow for Ledger devices, improved device name matching and status UX, and a substantial DevTools tooling expansion enabling robust cross-platform debugging and tooling integration. Stability improvements and build reliability were reinforced through dependency lockfile updates and increased dev-script concurrency. Demonstrated broad technical competencies across TypeScript, React/Redux RTK patterns, WebSocket transport, Rozenite, Electron, and DevTools ecosystems.

Month: 2025-11 performance summary for LedgerHQ/ledger-live focusing on device onboarding reliability, UX enhancements, and code quality improvements that directly drive business value and maintainability.

October 2025 engineering monthly summary focusing on delivering reliable BLE capabilities, cleaner logging, improved firmware update UX, and strengthened testing across Ledger Live and RN-ble/device-sdk-ts. Key outcomes include increased BLE scanning reliability, reduced log noise, smoother navigation after OS updates, and improved release hygiene with changesets and CODEOWNERS updates. These workstreams collectively improve device onboarding, troubleshooting speed, and overall product stability.

September 2025 monthly summary focusing on key accomplishments, with emphasis on features delivered, bugs fixed, business impact, and technical proficiency across two repositories: LedgerHQ/device-sdk-ts and LedgerHQ/ledger-live. Key context: This period included iOS dependency upgrades for mobile stability, BLE and Android permission improvements for reliability, package release readiness, version alignment, and extensive maintenance to reduce risk.

August 2025: LedgerHQ/device-sdk-ts focused on reliability, maintainability, and release-readiness. Key feature work improved Ledger Apex device communication by stabilizing BLE IDs and refactoring disconnection handling during APDU flows, reducing retries and latency. Major infra and tooling upgrades included dependency upgrades, TS/ESLint config fixes, lockfile refresh, and cleanup of unused deps, driving build stability and developer throughput. Documentation updates for Device Management Kit, plus patch-release preparation, improved onboarding and developer confidence. These efforts reduced technical debt, improved code quality, and positioned the team for a smooth patch release.

July 2025 performance summary: Delivered Apex device integration across Ledger Live and the Device SDK TS, enabling Apex support in core components, including lock screen enhancements and image processing optimizations. Strengthened device management reliability through DMK transport error handling, proper error remapping, and improved disconnection handling during APDU operations. Enhanced onboarding with remote-config driven suppression of problematic OS updates, reducing user prompts. Updated release notes, translations, and lockfile/dependency changes to streamline releases. Added testing coverage for critical data sources and maintained robust change management through changesets. Overall, these efforts improved user experience on Apex devices, reduced pairing/disconnection issues, and accelerated release readiness with strong technical hygiene.

June 2025 performance summary: Delivered reliability and UX improvements across device-sdk-ts and ledger-live, focusing on a robust device connection lifecycle, improved onboarding (including Charon flow), and stronger test hygiene. These changes reduce user-facing disruptions, accelerate onboarding, and improve code quality and maintainability.

May 2025 monthly summary for LedgerHQ/device-sdk-ts focusing on delivering robust transport capabilities, improving resource management, and enabling developer-facing playground actions. Key outcomes center on stabilizing the RN-HID APDU transport, introducing a robust Android USB timeout cancellation pattern, and adding a convenient device action in the Mobile Playground for uninstalling apps by name. Overall, the month delivered tangible business value through more reliable device communications, reduced runtime failures, and improved testing capabilities, contributing to faster integration cycles and better developer experience.

April 2025 — Cross-repo delivery across Ledger Live and device-sdk-ts delivering notable business value through robust Bluetooth/device management, DMK stabilization, UI polish for Europa, improved BLE transport and error handling, and CI-release tooling.

March 2025 highlights focused on reliability, onboarding quality, and developer productivity across Ledger Live and device tooling. Delivered robust Android BLE scanning and location-permission handling, enabling consistent cross-device performance and coroutines-based async flows. Refined onboarding with correct post-setup redirection and a feature-flag-enabled deviceInitialApps path, reducing setup friction. Stabilized Android USB transport in device-sdk-ts with MTU, Dispatcher initialization, and legacy-permission handling. Hardened RN-HID with improved device connection/state management and bootloader discovery UX, plus expanded testing/CI coverage. Updated dependencies, Flipper plugin wiring, and lockfile alignment to improve stability. A minor documentation typo in RN-HID README was fixed. Overall, these changes boost user reliability, accelerate onboarding, and strengthen cross-platform device support while improving developer workflows.

February 2025 monthly summary for LedgerHQ/device-sdk-ts focusing on stabilizing the HID Android transport for React Native, improving device discovery UX, and strengthening build/process hygiene to enable broader Android compatibility and faster time-to-value for developers and end users.

December 2024 (LedgerHQ/ledger-live) focused on strengthening feature flag reliability and transport layer governance. Delivered a type-safe Firebase feature flag interface and a robust device transport registration flow with feature-flag gating, reducing runtime errors and improving maintainability across core flows.

November 2024 highlights for LedgerHQ/ledger-live: onboarding UX refactor with Recover upsell integration, a new Nano X blePaired animation, improved Nano SP LLM prompts, and a bug fix ensuring post-onboarding upsell triggers only for new users. Delivered via live-common refactor, feature flags, and UI/animation work across platforms; these changes improve onboarding conversions, reduce mis-triggered upsell flows, and enhance cross-theme visuals.

Month: 2024-10 | LedgerHQ/ledger-live delivered auto-redirection post-onboarding to Ledger Recover upsell and post-onboarding flows, refining navigation and state management to guide users to relevant onboarding continuations and upsell opportunities for both new and restoring users.