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Mathieu Pellerin

PROFILE

Mathieu Pellerin

Worked on opengisch/QField, delivering robust cloud project management and data integrity improvements. Enhanced the QFieldCloudProjectsModel by refining signal handling for row insertions and synchronizing delta wrapper state with project operations, ensuring reliable cloud workflows. Improved date processing with defaulting and conversion logic, supported by targeted tests. Refactored attachment and download management to simplify path handling and introduced a download-complete signal for better workflow tracking. Upgraded map rendering performance by optimizing freeze ID storage and stabilized WebView behavior for consistent UI experience. Utilized C++, QML, and the Qt framework to strengthen model-view architecture, logging, and front-end reliability throughout the codebase.

Overall Statistics

Feature vs Bugs

51%Features

Repository Contributions

1,682Total
Bugs
509
Commits
1,682
Features
528
Lines of code
130,366
Activity Months22

Work History

July 2026

11 Commits • 5 Features

Jul 1, 2026

July 2026 performance summary for opengisch/QField focused on stability, data integrity, and developer productivity across cloud project handling, date processing, attachments/downloads, and UI/webview behavior. The work emphasizes business value by reducing user-visible errors, improving reliability of cloud project operations, and increasing maintainability and test coverage.

June 2026

78 Commits • 18 Features

Jun 1, 2026

June 2026 focused on reliability, developer productivity, and business value delivery across QField and QFieldCloud. Key reliability improvements were shipped for cloud project workflows, with targeted enhancements to startup stability, data refresh, and release pipelines. User-centric enhancements were delivered to improve data transfer and editor UX, while quality and tooling were strengthened via expanded tests and static analysis.

May 2026

190 Commits • 59 Features

May 1, 2026

May 2026 monthly summary: Delivered a broad set of reliability, UX, and performance improvements across QField, QField-docs, and fmtm. Key features include URL validity tests for QField-shipped URLs; UI polish reducing avatar and cloud thumbnail pixelation; preservation of file permissions on non-Windows OS; QFieldCloud status banner integration fix; NTRIP/NMEA enhancements (default port, settings UI, currentness indicator, and SSL support); cloud projects UX improvements (filtering, search, and description snippets); added project metadata and description handling in QGIS project creation for QFieldCloud; BLE and field data collection UX improvements; and various code-quality, testing, and documentation updates. Major bug fixes include dead support link, portable project URL workflow fixes, safeguarding feature save on failed creation, NaN handling in text editor, crash prevention in property form building, UI alignment and navigation fixes, and improved stability for TCP/UDP/NTRIP workflows. Overall, these changes improve field reliability, data integrity, and cloud project workflows while reducing support overhead and enabling faster, more confident field operations.

April 2026

91 Commits • 30 Features

Apr 1, 2026

April 2026 delivered stability, performance, and cloud-collaboration improvements across opengisch/QField and opengisch/QField-docs. Key contributions include upstream alignment of Android styling, a leaner startup path via lazy QtMultimedia initialization, and a major Qt 6.10.3 upgrade for long-term maintainability. UX enhancements such as kinetic zoom (double-tap), wizard-mode for feature forms, and refined usage/meter layouts improve efficiency and reduce user error. Data and cloud workflows were strengthened with an audio analyzer integration for attachments, cookie-based session persistence, cloud-project filtering by user, and global exposure of cloud context. Several documentation and compatibility improvements (ingroup tags, QGIS 4.0.1 patch) reduce onboarding friction and ensure broader compatibility. Overall impact: faster, more reliable app startup; smoother navigation and data capture; stronger cloud collaboration and maintainability.

March 2026

35 Commits • 6 Features

Mar 1, 2026

March 2026 — opengisch/QField: Delivered a strong Qt6/QGIS readiness foundation with significant platform improvements, stability fixes, and performance enhancements that directly support faster releases and broader device coverage. Key features delivered: - Qt porting and build upgrades: migrated to Qt 6.10.1, updated to QGIS 3.99 (to support Qt 6.10), added qtwebview port, and added a pcre2 port overlay; implemented build fixes across targets. - Cross-platform build/CI and packaging improvements: Linux CI updated to 24.04, added dev dependencies, Android/iOS/macOS packaging refinements; ensured Qt6::CorePrivate usage for Android service; packaging continuity across platforms. - Performance and code quality improvements: lazy initialization of the NFC manager; fix invalidFilters usage; replace captured [=] with [this]; corrected Quick3DTerrainGeometry Q_PROPERTY; overall code cleanliness gains. - UI/UX improvement: simplified geometry editing button for single-part points to reduce user confusion. - Qt Multimedia porting and cleanup: stabilized qtmultimedia across Android; removed GStreamer overlay; adjusted FFmpeg compatibility; ensured smoother media handling on target platforms. - Additional robustness: various bug fixes and deprecation cleanups enabling a cleaner upgrade path. Major bugs fixed: - Qt warnings and compatibility: resolved type registration warnings and QFile open() warnings; stabilized Qt QML regressions with 6.10.1. - Visibility and file handling reliability: corrected logic hiding translated project files in local datasets/projects view; fixed file receiver opening logic and related warnings. - Stability of checks and tests: increased timeout for QFC authentication model check to reduce flaky failures; Pipewire adjustments to fix smoketest segfaults (and subsequent removal from the port). - CI/dep cleanups: Linux Ubuntu 24.04 upgrade and mono installation to support builds; warning/deprecation cleanup. Overall impact and accomplishments: - Business value: more reliable cross-platform releases, reduced maintenance burden, and a smoother upgrade path to Qt6/QGIS 4.0 readiness; improved end-user experience with simpler UI and fewer flaky tests; stronger developer productivity through better CI, packaging, and code quality. - Technical achievements: successful port to Qt 6.10.1, integration with QGIS 3.99/4.0-ready flows, comprehensive multimedia port cleanup, and broad cross-platform CI/packaging enhancements across Linux, Android, iOS, and macOS. Technologies and skills demonstrated: - Qt6/QGIS integration, C++/Qt patterns (lazy init, Q_PROPERTY, capture semantics), porting strategies; cross-platform CI/packaging engineering; dependency management and patching for robust builds; debugging of multimedia stacks; UI/UX refinement.

February 2026

91 Commits • 34 Features

Feb 1, 2026

February 2026 monthly summary for opengisch/QField focusing on delivering a robust feature editing workflow, 3D UX improvements, and CI/build reliability. Highlights include integration of the Edit Buffer with the feature model, flush buffering rationale and fixes for feature creation, a major 3D UX overhaul with MapCanvas3D, camera defaults and 2D/3D sizing alignment, and session stability improvements for multi-project workflows. Also delivered build/packaging enhancements, increased test/resource reuse, and infrastructure improvements to support plugin bundling and sample-project handling. These efforts reduce run-time noise, improve data integrity, shorten feature delivery cycles, and enable more scalable cross-platform operation.

January 2026

47 Commits • 14 Features

Jan 1, 2026

January 2026: Focused on stabilizing mobile experiences, tightening map editing workflows, and strengthening release reliability for opengisch/QField. Key deliverables include iOS camera crash mitigation, a new map layer model with an enhanced point-picker UX, reshape tool improvements for multi-polygon overlap avoidance, WebDAV enhancements for directory listing and transfers, and CI/code-quality hygiene to reduce flaky builds. Overall impact: increased mobile stability for field deployments, smoother and safer map editing workflows, and more reliable releases thanks to CI improvements and code hygiene.

December 2025

50 Commits • 22 Features

Dec 1, 2025

December 2025 Monthly Summary for opengisch/QField: Focused on stability, UX polish, and build reliability across the project. Delivered updates to support active projects more robustly, improved plugin lifecycle handling, and streamlined translation and UI tooling. Major enhancements include updating QGIS to 3.44 for stability, UX and performance improvements in the plugin manager UI, and optimizations to CI/build workflows that reduce noise and speed feedback loops. The work supports smoother onboarding for new users, more reliable large-project handling, and clearer developer feedback cycles.

November 2025

124 Commits • 24 Features

Nov 1, 2025

November 2025 monthly summary focusing on stability, performance, and business value across opengisch/QField and opengisch/QField-docs. Delivered a suite of reliability fixes, platform readiness, and code quality improvements that enable faster feature delivery and a more robust field data workflow. Notable enhancements include platform readiness with Android minimum SDK 28, improved background task lifecycle, and significant CPPCheck/C++17 code quality upgrades. UX and GNSS/jumping workflows were refined for more responsive data capture and map interactions. Documentation and API docs were updated, and QFieldCloud integration was improved to better reflect connection properties and user credentials handling.

October 2025

108 Commits • 34 Features

Oct 1, 2025

Month: 2025-10 Concise monthly summary for performance review: Key features delivered and technical highlights across repositories: - QFieldCloud Delta handling enhancements (feature): Enabled delta file wrapper handling in cloud project objects and cleaned API usage; commits: 2aa03336fc7a30d663e51903129008608c348c1a, 7c564fbc556d4c7949f48808689fc8fcf8985625. - QFieldCloud Delta wrapper bug fixes (bug): Fixed typos in delta wrapper and ensured deltas count refresh works; commits: f0c400eb960ce51e41e4bffa0f642134584ccd62, 403c0d669e21f8d163cac2e1d3099916f834f214. - UI Popup enhancements and QfPopup component (feature): Improved non-fullscreen popups, adjusted margins, added QfPopup, and decluttered visuals; commits: 3512939e5dda9848efdb547ecde159411e748ec6, 2ba6328e2e953df4a7aa8340a7982c45c0341801, da26a8b032afcdd97869e22110f247738c0896c5, ed144d0860b4f2edc097747ffca7d384ce2c27e1, 03cd2b3235b9df6a84cac9ddecc05e82bb7d99db. - Cloud foreground data sync and improvements (feature): Upgraded QFieldCloud service to a foreground data-sync service on Android and added file attachment upload visual feedback; commit: 903c2e9ac11b4488b08b98fbdfde07057376d280. - Robustness and stability improvements (bugs/features): Non-cloud project loading robustness; commit: 650ccad07bf2e0b73bb3726b12e3fabda463b566; Layer Observer tests updated; commit: 86ae4f1bdfdcc86c70547b9f60ce73387d7be4d2; Code cleanup and refactoring; commit: 42cd9fd4cb7cd15c5d8fdd2c2f9c4d11d3f3136c; Qt 6.9.x readiness and Android compatibility updates; commits: d1dfa0b65836ae4a93bd074542d356ea91c1e494, 522225be9065679bc66955376ec8d5a355b82714, b0c8cf3138963db869f7d276d830474696544660. Major bugs fixed: - Delta wrapper typos and delta refresh issues: corrected misbehavior that blocked merging geometry-only patches and ensured delta counts refresh correctly; commits: f0c400eb960ce51e41e4bffa0f642134584ccd62, 403c0d669e21f8d163cac2e1d3099916f834f214. - Plugin manager tab highlight and UI crashes: fixed highlighting bug; commit: 8f0474a83ff381d19504a2607297c28207b63dc1. - Crash prevention for non-cloud project loading and invalid plugin URL: robust loading and safe plugin install paths; commits: 650ccad07bf2e0b73bb3726b12e3fabda463b566, 4feb48604ffb5f986dae7ffb09508a25ac0141ea. - Binding loop warnings and related UI stability: fixed binding loop issues and cleaned up warnings; commits: c7f6cc6b22354328a914929691b27c0eca8e83c5, c37139ae774cc0fd7e3f410864ffbc70b090ac0f. - UI layout and focus improvements: fixed feature form focus issues and navigation margins; commits: 9bd2ccc5bcb3c95eb63af2a21e0c7394a12dad1d, 2d1c127fcb478f87b67b86d7c9190898f097d92f. Overall impact and business value: - Increased reliability of cloud-based workflows, reducing manual rework and downtime when syncing delta changes across QFieldCloud projects. - Improved user experience with decluttered popups, clearer UI cues, and faster feedback on actions (photo capture, opening animation, login prompts). - Strengthened platform readiness with Qt 6.9.x support and Android optimizations, aligning with upcoming release milestones. - Enhanced robustness against crashes in non-cloud projects and plugin operations, improving enterprise adoption risk profile. Technologies/skills demonstrated: - C++, Qt 6 (Qt 6.9.x readiness), QML, Android-specific optimizations, and integration with QFieldCloud APIs. - Test-driven adjustments: updated unit tests for Layer Observer and robust loading paths. - Build and packaging stability: vcpkg updates, Qt translations cleanup, and multi-repo coordination. Note: This summary emphasizes business value delivered through cloud synchronization improvements, UX polish, robustness, and platform readiness across the October 2025 period.

September 2025

100 Commits • 41 Features

Sep 1, 2025

September 2025 monthly summary for opengisch/QField focused on delivering cloud-enabled workflow improvements, stability fixes, and UX polish across the platform. The work advanced core cloudification capabilities, enhanced project creation and management, and solidified the foundation with refactors and robust testing.

August 2025

60 Commits • 20 Features

Aug 1, 2025

August 2025: Strengthened data integrity, reliability, and user experience in QField. Delivered feature-model cleanliness and CRS-aware behavior, and hardened primary-key semantics for copy/duplicate/split workflows. Also improved test stability on macOS, expanded history/tracking model support, and enhanced UX and cloud/plugin resilience through NMEA log replay, clipboard signal reliability, and improved error visibility. These efforts drive safer data handling, user efficiency, and maintainability.

July 2025

50 Commits • 24 Features

Jul 1, 2025

July 2025 — Opengisch/QField delivered a targeted set of UX improvements, reliability fixes, and platform-readiness work across core editing, rendering, and plugin ecosystems. The changes enhance field usability, reduce downtime, and strengthen future readiness by aligning with platform requirements and performance goals. Notable deliveries include folder import naming customization with WebDAV support and collision avoidance; harmonized sub-labels styling for UI consistency; improved Bluetooth scanning UX; a cloud download crash fix; and major Android platform readiness work (target SDK 35, altitude reporting fix) plus a significant drawing performance optimization. The month also included stabilization and quality improvements in UI margins, plugin management, and release readiness to support a robust baseline for upcoming deployments.

June 2025

45 Commits • 14 Features

Jun 1, 2025

June 2025 performance summary for opengisch/QField: Key features delivered: Vertex Editor Topology Enhancements enabling topological addition of vertices across layers with geometry lock logic; Coordinate Locator and Goto Navigation Improvements providing an object name for the locator and reviving the navigation action; Canvas rendering and preview enhancements including edge-triggered re-render, WMST tile prefetch, and orientation-aware quadrant strategy; On-demand attachment support for cloud projects enabling on-demand attachment downloads within the attachment editor widget; Android app visual updates (splash screen) and UI polish improvements (2025 icon sizes and general UI readability) to improve mobile UX and maintainability. Major bugs fixed: QTime field type handling in Postgres layer; Cloud projects download with shared datasets access denied; Positioning and canvas lock behavior fixes during activation and rendering; Allow non-HTTPS connections for GNSS NMEA and WebView items; Ignore frozen state on repaint requests to ensure new features appear; Normalize navigation bearing to 0-360 degrees; Address machine review issues and housekeeping fixes such as removing local attachments when cloud version changes. Overall impact and accomplishments: Delivered tangible improvements in editing reliability across multi-layer topologies, faster and more predictable map previews, safer data handling for cloud attachments, and a more polished mobile experience. The changes strengthen core workflows for data creation, navigation, and asset management while aligning with 2025 design standards. Technologies/skills demonstrated: Topological editing optimization; advanced canvas rendering and preview strategies; WMST prefetching; on-demand cloud data access patterns; feature-lock and permission-lock integration; Android UI modernization; code readability and UI polish.

May 2025

54 Commits • 9 Features

May 1, 2025

May 2025 monthly summary focused on reliability, UX, and business value across QField. Delivered targeted features, stabilized data handling, and enhanced cloud project workflows. Key outcomes include enabling read-only vector layer searches, empowering data-defined feature forms with attribute alias, improving cloud project discovery and visibility, expanding audio file type support, and polishing the feature form UX with smoother interactions and animations. Overall impact: increased field data collection productivity, reduced friction for enterprise workflows, and stronger stability for core data operations.

April 2025

126 Commits • 28 Features

Apr 1, 2025

April 2025: Consolidated QField and QFieldCloud improvements across security, reliability, and cloud data workflows. Delivered security hardening for QFieldCloud (cookie clearance on logout, no password exposure, secure token handling, UI avatar fix) and refactored QFieldCloud API exposure to a urls property, improving reliability and developer ergonomics. Modernized the CI/build system across iOS/macOS/Windows (CMake/Xcode) and upgraded key dependencies (QGIS 3.42.1, Qt 6.8.3). Implemented a comprehensive Cloud Project data lifecycle overhaul, including removal of hacks, completion of cloud projects model, localization port, and auto-push support via QML. Added per-cloud-project localized datasets with automatic downloads when fetching a project, plus UI/UX enhancements for cloud project screens and QR code integration for project access. Demonstrated strong security, C++, and Qt/QML skills, with improved business value through safer authentication, faster cloud workflows, and more robust data handling.

March 2025

86 Commits • 24 Features

Mar 1, 2025

March 2025 performance summary for opengisch/QField and QField-docs. The month focused on delivering UX-rich map preview capabilities, strengthening storage and cloud workflows, improving performance on lower-end devices, and laying groundwork for security and cloud authentication. Significant UX and stability improvements across the map canvas, WebDAV/external storage, and build/test readiness contributed to tangible business value: faster, smoother map interactions; more reliable remote storage workflows; and stronger foundation for authentication and cloud features.

February 2025

62 Commits • 21 Features

Feb 1, 2025

February 2025 monthly summary: Delivered a targeted set of features, stability fixes, and documentation improvements across QField and QField-docs, with a strong emphasis on reliability, usability, and maintainability. The work reduced risk in WebDAV imports, improved UI consistency, and streamlined delivery across desktop and mobile, enabling faster onboarding and lower support costs.

January 2025

114 Commits • 36 Features

Jan 1, 2025

In Jan 2025, QField delivered a comprehensive WebDAV integration and content synchronization workflow, along with broad UI/UX improvements, cloud isolation for stability, and platform readiness enhancements. The work focused on business value: enabling remote collaboration, improving reliability across platforms, and reducing maintenance/app support overhead.

December 2024

121 Commits • 52 Features

Dec 1, 2024

December 2024 monthly summary: Delivered core platform improvements across QField, focusing on reliability, performance, and business value. Key outcomes include enhanced SSL testing with PostGIS via PGService configuration, up-to-date toolchains (Qt 6.8, QGIS 3.40.1, GDAL 3.10) and CI friendliness, plus comprehensive UI theming and customization capabilities. Background positioning and tracking enhancements enable reliable data capture in foreground and background, with improved stability and resource efficiency. Accessibility improvements, Play Store size optimizations, and codebase modernization (Qt remote objects, port updates) position the product for faster deployments and broader platform support.

November 2024

35 Commits • 12 Features

Nov 1, 2024

November 2024: Stabilized core field workflows, improved data integrity, and strengthened CI reliability. Key features and fixes delivered across opengisch/QField include iOS build/media handling fixes (libarchive), immediate attachment uploads on synchronize, UI/UX polish with login margins and localization, stability improvements for the relation editor and geometry digitizing, and improved layout organization for generated prints. Foundational CI enhancements (PostGIS Docker, Linux CI first pass, Windows PostGIS enablement) set the stage for faster, more reliable releases. These changes reduce support overhead, improve data quality in the field, and enable more scalable deployments.

October 2024

4 Commits • 1 Features

Oct 1, 2024

October 2024 performance summary for opengisch/QField focused on expanding data accessibility, stabilizing cross-platform behavior, and improving localization. Key highlights include implementing archive support for 7z and rar formats across GDAL and QField, fixing UI language loading to respect the host system locale, and removing a potentially unstable iOS feature through a targeted build configuration change. These efforts improve data ingest workflows, reduce platform-specific risks, and enhance user experience across installations. Overall impact: Expanded cross-platform data accessibility, improved localization UX, and reduced build instability on iOS, enabling smoother onboarding for data-heavy workflows and fewer platform-specific issues. Technologies/skills demonstrated: GDAL integration for archive formats, archive handling, cross-platform build configuration, and translation/localization workflows.

Activity

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Quality Metrics

Correctness90.4%
Maintainability87.4%
Architecture85.0%
Performance84.6%
AI Usage20.2%

Skills & Technologies

Programming Languages

BashBinaryCC++CMakeDockerfileGradleHTMLJSONJava

Technical Skills

3D Graphics3D graphics3D graphics programming3D mapping3D visualizationAPI DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI designAPI developmentAPI integrationAndroid DevelopmentAndroid developmentAnimation

Repositories Contributed To

4 repos

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

opengisch/QField

Oct 2024 Jul 2026
22 Months active

Languages Used

C++CMakeDockerfileJavaScriptObjective-C++PythonQMLSQL

Technical Skills

Archive SupportBuild SystemsC++File HandlingGeospatial Software DevelopmentInternationalization

opengisch/QField-docs

Dec 2024 Jun 2026
9 Months active

Languages Used

MarkdownJavaScriptQMLYAML

Technical Skills

DocumentationAPI DocumentationJavaScript DevelopmentPlugin DevelopmentQMLQML Development

microsoft/vcpkg

Nov 2024 Dec 2024
2 Months active

Languages Used

cmakeCCMake

Technical Skills

Build System Configurationbuild systemsBuild SystemsC/C++Cross-Platform Development

hotosm/fmtm

May 2026 May 2026
1 Month active

Languages Used

PythonQML

Technical Skills

API developmentData ManagementGIS DevelopmentPlugin DevelopmentPython ScriptingQML Development