
Over thirteen months, Zatteo delivered robust feature development and codebase modernization across the Cozy stack, notably in cozy-drive, cozy-libs, and cozy-client. He engineered end-to-end workflows for Shared Drives, implemented internationalization, and enhanced document management APIs, focusing on maintainability and user experience. Using TypeScript, React, and Node.js, Zatteo migrated legacy modules to ES Modules, refactored UI components for accessibility, and streamlined dependency management. His work included backend API expansion, frontend state management, and cross-app integration, resulting in more reliable releases and improved developer velocity. The depth of his contributions ensured scalable, maintainable solutions aligned with evolving business needs.

Cross-repo delivery in 2025-10 focused on reliability, UX improvements, and cross-app entrypoints. Implemented a robust Home Shortcuts lifecycle, centralized and flag-driven app entrypoints, expanded Drive capabilities with new file-type entrypoints and improved favorites filtering, and improved data merging semantics with safer overwrite rules and tests. Completed critical tooling upgrades to support faster releases and consistency across the Cozy stack.
Cross-repo delivery in 2025-10 focused on reliability, UX improvements, and cross-app entrypoints. Implemented a robust Home Shortcuts lifecycle, centralized and flag-driven app entrypoints, expanded Drive capabilities with new file-type entrypoints and improved favorites filtering, and improved data merging semantics with safer overwrite rules and tests. Completed critical tooling upgrades to support faster releases and consistency across the Cozy stack.
September 2025 summary focused on expanding global accessibility, strengthening UX around shared spaces, and improving development velocity through tooling upgrades. Delivered broad localization and internationalization improvements, revamped Shared Drives UI, and modernized build/dependency handling to reduce friction for the dev team and improve product stability.
September 2025 summary focused on expanding global accessibility, strengthening UX around shared spaces, and improving development velocity through tooling upgrades. Delivered broad localization and internationalization improvements, revamped Shared Drives UI, and modernized build/dependency handling to reduce friction for the dev team and improve product stability.
August 2025 monthly summary for cozy/cozy-libs: Cordova Upload Cleanup focused on removing unused Cordova dead code, simplifying mobile upload paths, and cleaning platform-specific code to reduce maintenance overhead and improve cross-platform consistency. This work reduces technical debt and streamlines future enhancements for mobile document uploads.
August 2025 monthly summary for cozy/cozy-libs: Cordova Upload Cleanup focused on removing unused Cordova dead code, simplifying mobile upload paths, and cleaning platform-specific code to reduce maintenance overhead and improve cross-platform consistency. This work reduces technical debt and streamlines future enhancements for mobile document uploads.
2025-07 Monthly Summary — Focused on delivering high-impact features, hardening data reliability, and improving developer experience across cozy-drive, cozy-libs, cozy-client, and cozy-stack. The work emphasizes business value: cleaner UIs, more accurate routing, robust data handling, and consistent UI rendering. Notable outcomes include end-to-end Shared Drives support in the desktop app, dynamic UX improvements for premium access, and stronger typing and API ergonomics.
2025-07 Monthly Summary — Focused on delivering high-impact features, hardening data reliability, and improving developer experience across cozy-drive, cozy-libs, cozy-client, and cozy-stack. The work emphasizes business value: cleaner UIs, more accurate routing, robust data handling, and consistent UI rendering. Notable outcomes include end-to-end Shared Drives support in the desktop app, dynamic UX improvements for premium access, and stronger typing and API ergonomics.
June 2025 performance summary across cozy-libs, cozy-ui, cozy-drive, and cozy-client: Robust, user-focused enhancements to the Cozy External Bridge, stronger UI/UX for Shared Drives, and backend API expansion. Delivered document management with createDocs/updateDocs and rename support, added search and notification APIs, and implemented a guard to prevent duplicate bridge method execution on navigation. UI/UX refinements for Shared Drives and responsive Add Menu, plus a cozy-ui upgrade. Backend support via fetchSharedDrives API. These changes drive operational efficiency, improved cross-app integration, and a smoother end-user experience, delivering clear business value with tangible technical achievements.
June 2025 performance summary across cozy-libs, cozy-ui, cozy-drive, and cozy-client: Robust, user-focused enhancements to the Cozy External Bridge, stronger UI/UX for Shared Drives, and backend API expansion. Delivered document management with createDocs/updateDocs and rename support, added search and notification APIs, and implemented a guard to prevent duplicate bridge method execution on navigation. UI/UX refinements for Shared Drives and responsive Add Menu, plus a cozy-ui upgrade. Backend support via fetchSharedDrives API. These changes drive operational efficiency, improved cross-app integration, and a smoother end-user experience, delivering clear business value with tangible technical achievements.
May 2025 monthly summary: Delivered targeted business value through internationalization, stability, and UX improvements across the Cozy client suite. Focused on eliminating user-facing translation gaps, stabilizing dependencies for reliable builds, and enhancing navigation flows. Major refactors and logging improvements across libraries reduced technical debt and improved maintainability, while branding and public UI polishing improved external perception and onboarding.
May 2025 monthly summary: Delivered targeted business value through internationalization, stability, and UX improvements across the Cozy client suite. Focused on eliminating user-facing translation gaps, stabilizing dependencies for reliable builds, and enhancing navigation flows. Major refactors and logging improvements across libraries reduced technical debt and improved maintainability, while branding and public UI polishing improved external perception and onboarding.
April 2025 performance summary for Cozy projects. The month delivered a broad set of features and stability improvements across cozy-drive, cozy-ui, cozy-libs, cozy-client, and cozy-stack, focusing on maintainability, security, UX, and branding while preserving user-facing behavior. Key features delivered: - Cozy dependencies maintenance and upgrades in cozy-drive: synchronized and upgraded cozy-bar, cozy-search, cozy-ui, cozy-client, and related packages to latest minor/patch versions to gain bug fixes, security patches, and performance improvements without altering user-facing features. Notable commits include 1827f64b..., c6bb3929..., 4cf410fc..., f26fddca..., e1efa06a..., 7e1e599c... - Enable profile link fetching via Cozy-bar upgrade in cozy-drive: upgraded bar to include profile link fetching and integrated in-app flow (commit 7bba1edc...). - Twake branding and UI localization refresh in cozy-drive: updated manifest wording and general wording to Twake, plus French localization updates (commits 815453f0..., f0b0a13c7..., ad57fb4b...). - Download link generation and UX enhancements in cozy-drive: centralized download link creation, feature-flag to force desktop app link, and banner link behavior improvements (ff4dfea6f..., 46e38030..., 955318ce...). - Code cleanup and deprecation removal in cozy-drive: removed mobile translation code and simplified pushClient theming (171d4f07..., aae1a8b9...). - Cozy UI feature enhancements: UI utilities (background transparency, zero elevation, extended border-radius), improved SearchBar UX (numeric elevation, font sizing, hover control), AppTitle slug/iconography refresh, and TypeScript typings for core components; dialog content customization via useCozyDialog (multiple commits in cozy-ui). - Cozy UI and Twake theme enhancements in cozy-libs: external bridge linting/config propagation, new accepted domain; mobile Twake-theme search tweaks, AI assistant integration, color parity, hover options, and new AssistantLink; CI packaging bug fix; avatar rendering improvements and cozy-stack avatar display restoration. - Client and stack improvements: in cozy-client new sort function for app lists with explicit tests and documentation, and display name adjustments to drop the Twake prefix; cozy-stack avatar rendering cross-browser fix. Major bugs fixed: - CI packaging blocker: fixed extra space in package.json that blocked CI in cozy-libs (a26658ab...). - ConversationBar UI: corrected non-round end icons (2a0d33a8...). - Avatar display issues: corrected avatar size rendering in the UI (8745f511..., 8ec87883...). - Referrer/navigation handling: switch to using parent origin rather than document.referrer (ed218c39...). Overall impact and accomplishments: - Business value: Reduced risk and maintenance cost through dependency hygiene, increased security posture, and performance gains without disrupting users. Branding alignment with Twake improves go-to-market consistency and localization supports broader user adoption. Feature flags and refactors enable safer evolutions and faster iteration. - User experience: UX refinements across download flows, search interactions, and UI components; improved avatar and sharing visuals; more predictable theming in dark mode. - Developer experience: TypeScript typings for UI components, explicit testing around app naming, and cleaner code paths with deprecations removed and content customization hooks exposed for extensibility. Technologies/skills demonstrated: - Dependency management and patch-level upgrades across a multi-repo ecosystem. - TypeScript typings and explicit API surface design for UI components. - UI/UX design tokens, theming and localization practices (Twake branding, FR localization). - Refactoring, feature flags, and maintainability improvements with comprehensive tests. - Cross-repo collaboration: coordinated changes across cozy-drive, cozy-ui, cozy-libs, cozy-client, and cozy-stack to deliver cohesive improvements.
April 2025 performance summary for Cozy projects. The month delivered a broad set of features and stability improvements across cozy-drive, cozy-ui, cozy-libs, cozy-client, and cozy-stack, focusing on maintainability, security, UX, and branding while preserving user-facing behavior. Key features delivered: - Cozy dependencies maintenance and upgrades in cozy-drive: synchronized and upgraded cozy-bar, cozy-search, cozy-ui, cozy-client, and related packages to latest minor/patch versions to gain bug fixes, security patches, and performance improvements without altering user-facing features. Notable commits include 1827f64b..., c6bb3929..., 4cf410fc..., f26fddca..., e1efa06a..., 7e1e599c... - Enable profile link fetching via Cozy-bar upgrade in cozy-drive: upgraded bar to include profile link fetching and integrated in-app flow (commit 7bba1edc...). - Twake branding and UI localization refresh in cozy-drive: updated manifest wording and general wording to Twake, plus French localization updates (commits 815453f0..., f0b0a13c7..., ad57fb4b...). - Download link generation and UX enhancements in cozy-drive: centralized download link creation, feature-flag to force desktop app link, and banner link behavior improvements (ff4dfea6f..., 46e38030..., 955318ce...). - Code cleanup and deprecation removal in cozy-drive: removed mobile translation code and simplified pushClient theming (171d4f07..., aae1a8b9...). - Cozy UI feature enhancements: UI utilities (background transparency, zero elevation, extended border-radius), improved SearchBar UX (numeric elevation, font sizing, hover control), AppTitle slug/iconography refresh, and TypeScript typings for core components; dialog content customization via useCozyDialog (multiple commits in cozy-ui). - Cozy UI and Twake theme enhancements in cozy-libs: external bridge linting/config propagation, new accepted domain; mobile Twake-theme search tweaks, AI assistant integration, color parity, hover options, and new AssistantLink; CI packaging bug fix; avatar rendering improvements and cozy-stack avatar display restoration. - Client and stack improvements: in cozy-client new sort function for app lists with explicit tests and documentation, and display name adjustments to drop the Twake prefix; cozy-stack avatar rendering cross-browser fix. Major bugs fixed: - CI packaging blocker: fixed extra space in package.json that blocked CI in cozy-libs (a26658ab...). - ConversationBar UI: corrected non-round end icons (2a0d33a8...). - Avatar display issues: corrected avatar size rendering in the UI (8745f511..., 8ec87883...). - Referrer/navigation handling: switch to using parent origin rather than document.referrer (ed218c39...). Overall impact and accomplishments: - Business value: Reduced risk and maintenance cost through dependency hygiene, increased security posture, and performance gains without disrupting users. Branding alignment with Twake improves go-to-market consistency and localization supports broader user adoption. Feature flags and refactors enable safer evolutions and faster iteration. - User experience: UX refinements across download flows, search interactions, and UI components; improved avatar and sharing visuals; more predictable theming in dark mode. - Developer experience: TypeScript typings for UI components, explicit testing around app naming, and cleaner code paths with deprecations removed and content customization hooks exposed for extensibility. Technologies/skills demonstrated: - Dependency management and patch-level upgrades across a multi-repo ecosystem. - TypeScript typings and explicit API surface design for UI components. - UI/UX design tokens, theming and localization practices (Twake branding, FR localization). - Refactoring, feature flags, and maintainability improvements with comprehensive tests. - Cross-repo collaboration: coordinated changes across cozy-drive, cozy-ui, cozy-libs, cozy-client, and cozy-stack to deliver cohesive improvements.
March 2025 performance across cozy-ui, cozy-libs, cozy-drive and cozy-client focused on codebase modernization, dependency hygiene, UX improvements, and stronger tooling to enable faster delivery and easier integrations. Key outcomes include ES Modules migration enabling better tree-shaking and bundler compatibility; reduced bundle sizes via peer dependencies and removal of obsolete APIs; expanded search capabilities and integration scaffolding; and improved monorepo tooling and CI stability.
March 2025 performance across cozy-ui, cozy-libs, cozy-drive and cozy-client focused on codebase modernization, dependency hygiene, UX improvements, and stronger tooling to enable faster delivery and easier integrations. Key outcomes include ES Modules migration enabling better tree-shaking and bundler compatibility; reduced bundle sizes via peer dependencies and removal of obsolete APIs; expanded search capabilities and integration scaffolding; and improved monorepo tooling and CI stability.
February 2025 monthly summary highlighting key features delivered, major bugs fixed, and overall impact across cozy-libs, cozy-drive, cozy-client, and cozy-ui. Deliverables focused on end-to-end Shared Drives workflow, asset handling improvements, build tooling, and UI/assets enhancements that unlock collaboration, improve visual consistency, and streamline deployment.
February 2025 monthly summary highlighting key features delivered, major bugs fixed, and overall impact across cozy-libs, cozy-drive, cozy-client, and cozy-ui. Deliverables focused on end-to-end Shared Drives workflow, asset handling improvements, build tooling, and UI/assets enhancements that unlock collaboration, improve visual consistency, and streamline deployment.
January 2025: Delivered substantial UI modernization and dependency hygiene across cozy-drive, cozy-ui, cozy-libs, and cozy-client. Migrated UI to cozy-ui Buttons and QuotaPaywall, modernized cozy-drive UI with Card/Typography, and migrated loading indicators to Backdrop. Replaced hammerjs with a dedicated useOnLongPress hook, and completed thorough dependency cleanup and Cordova-related removals to reduce technical debt. These efforts improved user experience, reduced maintenance costs, and aligned authentication flows with modern standards, enabling faster, safer feature delivery across the platform.
January 2025: Delivered substantial UI modernization and dependency hygiene across cozy-drive, cozy-ui, cozy-libs, and cozy-client. Migrated UI to cozy-ui Buttons and QuotaPaywall, modernized cozy-drive UI with Card/Typography, and migrated loading indicators to Backdrop. Replaced hammerjs with a dedicated useOnLongPress hook, and completed thorough dependency cleanup and Cordova-related removals to reduce technical debt. These efforts improved user experience, reduced maintenance costs, and aligned authentication flows with modern standards, enabling faster, safer feature delivery across the platform.
December 2024 delivered modernization, simplification, and mobile/web experience enhancements across cozy-ui, cozy-libs, and cozy-drive. The month focused on upgrading testing practices, reducing technical debt, centralizing data-driven features, and strengthening CI/CD and release processes, with substantial improvements in reliability, performance, and developer velocity.
December 2024 delivered modernization, simplification, and mobile/web experience enhancements across cozy-ui, cozy-libs, and cozy-drive. The month focused on upgrading testing practices, reducing technical debt, centralizing data-driven features, and strengthening CI/CD and release processes, with substantial improvements in reliability, performance, and developer velocity.
Monthly summary for 2024-11: Delivered user-facing features and completed extensive test-framework modernization across the Cozy stack. Key feature: Autofill Tooltip Dismissal Preference stored in Settings to prevent repetitive prompts and improve UX. Major fixes: resolved test-time accessibility issue for cozy-client in cozy-ui tests via Yarn noHoist; addressed a React type/version conflict by pinning @types/react to 17.0.0. Major refactors: removed cozy-harvest-lib dependency in cozy-ui; migrated tests from Enzyme to React Testing Library across UI, Drive, and Client; reintroduced Viewer component tests in cozy-libs. End-to-end framework improvements across cozy-drive and cozy-client, with RTL migrations and removal of Enzyme, plus environment fixes to ensure test reliability (Yarn noHoist and type alignment). Overall impact: tighter release cycles, more reliable tests, removal of deprecated dependencies, and a cleaner, more maintainable codebase. Technologies/skills: React Testing Library, Jest config updates, Yarn workspaces/noHoist, dependency cleanup, test modernization and maintainability improvements, breaking-changes awareness for consumers.
Monthly summary for 2024-11: Delivered user-facing features and completed extensive test-framework modernization across the Cozy stack. Key feature: Autofill Tooltip Dismissal Preference stored in Settings to prevent repetitive prompts and improve UX. Major fixes: resolved test-time accessibility issue for cozy-client in cozy-ui tests via Yarn noHoist; addressed a React type/version conflict by pinning @types/react to 17.0.0. Major refactors: removed cozy-harvest-lib dependency in cozy-ui; migrated tests from Enzyme to React Testing Library across UI, Drive, and Client; reintroduced Viewer component tests in cozy-libs. End-to-end framework improvements across cozy-drive and cozy-client, with RTL migrations and removal of Enzyme, plus environment fixes to ensure test reliability (Yarn noHoist and type alignment). Overall impact: tighter release cycles, more reliable tests, removal of deprecated dependencies, and a cleaner, more maintainable codebase. Technologies/skills: React Testing Library, Jest config updates, Yarn workspaces/noHoist, dependency cleanup, test modernization and maintainability improvements, breaking-changes awareness for consumers.
Concise monthly summary for 2024-10 focusing on delivered features, fixed bugs, and overall impact across cozy/cozy-libs and cozy-ui.
Concise monthly summary for 2024-10 focusing on delivered features, fixed bugs, and overall impact across cozy/cozy-libs and cozy-ui.
Overview of all repositories you've contributed to across your timeline