cismet-collab/carma-wuppertal-collab
Oct 2024 – Feb 2026
16 Months active
Languages Used
HTMLJavaScriptTypeScriptCSStsxJSXReact
Technical Skills
Front End DevelopmentFront-end DevelopmentReactTypeScriptUI DevelopmentUI/UX Development
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PROFILE
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Stefan Sander developed and maintained a comprehensive suite of map-based features for the cismet-collab/carma-wuppertal-collab repository, focusing on user-centric workflows and robust UI/UX. Over 16 months, he delivered interactive mapping tools, advanced data-query modes, and dynamic help systems, integrating technologies such as React, TypeScript, and CSS. His work included implementing 3D oblique imagery modes, geometry snapping, and analytics integration, while refining documentation and accessibility. By emphasizing maintainable component architecture and responsive design, Stefan improved usability across devices and streamlined onboarding. His engineering approach balanced iterative feature delivery with disciplined code maintenance, resulting in a stable, extensible frontend platform.
Overall Statistics
Feature vs Bugs
83%Features
Repository Contributions
402Total
Bugs
30
Commits
402
Features
143
Lines of code
6,240
Activity Months16
Your Network
8 peopleWork History
February 2026
9 Commits • 3 Features
Feb 1, 2026February 2026 monthly summary for cismet-collab/carma-wuppertal-collab. Focused on delivering user-centric data access improvements, UI/UX refinements, and a robust component architecture, while addressing storage estimation bugs. Key features delivered: - Aerial Imagery Data Size Metadata Update and Dataset Access: Updated aerial imagery size metadata across help and UI (from ~4.7 MB to 19 MB) and added a link to the aerial imagery dataset description in the Wuppertal Open Data Portal to improve data access and set expectations for data users. - Help Section Enhancements: Navigation, Sensor Info, and UI Text: Improved help section navigation and content, documented Smart-City sensors and dynamic map layers; added react-scroll Link for smoother navigation; corrected UI text/formatting for dataset downloads. - Dynamic Menu Active Section Propagation Across Components: Introduced shared prop setAppMenuActiveMenuSection to consistently manage the active menu section across the app. Major bugs fixed: - Storage estimation corrections for aerial imagery (/1, /2) and footnote UI corrections, improving accuracy of storage planning and user-facing documentation. Overall impact and accomplishments: - Enhanced data discoverability and expectations for Open Data access, leading to improved user satisfaction and reduced support queries. - More maintainable and predictable UI behavior through a shared props approach, improving developer velocity for future features. - Demonstrated end-to-end capability from metadata handling to UI/UX quality improvements, reinforcing business value of accurate data presentation and intuitive navigation. Technologies/skills demonstrated: - React component design, shared state/props patterns, dynamic UI updates, and integration with external Open Data portal metadata. - UI/UX optimization, documentation across the Help section, and accessibility of dataset downloads.
9 Commits • 3 Features
Feb 1, 2026February 2026 monthly summary for cismet-collab/carma-wuppertal-collab. Focused on delivering user-centric data access improvements, UI/UX refinements, and a robust component architecture, while addressing storage estimation bugs. Key features delivered: - Aerial Imagery Data Size Metadata Update and Dataset Access: Updated aerial imagery size metadata across help and UI (from ~4.7 MB to 19 MB) and added a link to the aerial imagery dataset description in the Wuppertal Open Data Portal to improve data access and set expectations for data users. - Help Section Enhancements: Navigation, Sensor Info, and UI Text: Improved help section navigation and content, documented Smart-City sensors and dynamic map layers; added react-scroll Link for smoother navigation; corrected UI text/formatting for dataset downloads. - Dynamic Menu Active Section Propagation Across Components: Introduced shared prop setAppMenuActiveMenuSection to consistently manage the active menu section across the app. Major bugs fixed: - Storage estimation corrections for aerial imagery (/1, /2) and footnote UI corrections, improving accuracy of storage planning and user-facing documentation. Overall impact and accomplishments: - Enhanced data discoverability and expectations for Open Data access, leading to improved user satisfaction and reduced support queries. - More maintainable and predictable UI behavior through a shared props approach, improving developer velocity for future features. - Demonstrated end-to-end capability from metadata handling to UI/UX quality improvements, reinforcing business value of accurate data presentation and intuitive navigation. Technologies/skills demonstrated: - React component design, shared state/props patterns, dynamic UI updates, and integration with external Open Data portal metadata. - UI/UX optimization, documentation across the Help section, and accessibility of dataset downloads.
February 2026
December 2025
17 Commits • 2 Features
Dec 1, 2025December 2025: Delivered core 3D oblique imagery workflow and strengthened 3D guidance. Key features include Oblique Aerial Imagery 3D Mode UI and Usage with a UI toggle, footprint highlight, and image preview/navigation, plus comprehensive 3D help and accessibility improvements. Outcome: improved user productivity for 3D workflows and clearer usage instructions; enhanced accessibility and developer-facing documentation. No critical bugs reported this month; stability improvements were achieved through UI refinements and robust docs. Technologies demonstrated include UI/UX for 3D features, documentation systems, accessibility best practices, and localization updates (German).
December 2025
17 Commits • 2 Features
Dec 1, 2025December 2025: Delivered core 3D oblique imagery workflow and strengthened 3D guidance. Key features include Oblique Aerial Imagery 3D Mode UI and Usage with a UI toggle, footprint highlight, and image preview/navigation, plus comprehensive 3D help and accessibility improvements. Outcome: improved user productivity for 3D workflows and clearer usage instructions; enhanced accessibility and developer-facing documentation. No critical bugs reported this month; stability improvements were achieved through UI refinements and robust docs. Technologies demonstrated include UI/UX for 3D features, documentation systems, accessibility best practices, and localization updates (German).
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary for carma-wuppertal-collab: Implemented geometry measurement snapping and vector-layer alignment in the mapping tool, delivering precise geometry alignment with vector map layers and a clear UI description for the snapping feature. The change enhances measurement accuracy and user workflow while integrating smoothly with existing map content infrastructure.
2 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary for carma-wuppertal-collab: Implemented geometry measurement snapping and vector-layer alignment in the mapping tool, delivering precise geometry alignment with vector map layers and a clear UI description for the snapping feature. The change enhances measurement accuracy and user workflow while integrating smoothly with existing map content infrastructure.
November 2025
October 2025
8 Commits • 2 Features
Oct 1, 2025October 2025 highlights focused on map-related UX improvements and API simplification for the carma-wuppertal-collab project. The work emphasizes clearer user guidance for map positioning, a centralized text strategy, and a more maintainable component API with configurable zoom for map point displays.
October 2025
8 Commits • 2 Features
Oct 1, 2025October 2025 highlights focused on map-related UX improvements and API simplification for the carma-wuppertal-collab project. The work emphasizes clearer user guidance for map positioning, a centralized text strategy, and a more maintainable component API with configurable zoom for map point displays.
September 2025
36 Commits • 16 Features
Sep 1, 2025September 2025 (Month: 2025-09) summary for the carma-wuppertal-collab repository. Focused on delivering business-value through data-query enhancements, map-related features, and a robust end-to-end printing/sharing workflow. Implemented incremental loading for related entities, optimized kartometrie performance with a caching layer, expanded map printing and sharing capabilities, and performed UI refinements to improve clarity and consistency. These changes reduce data retrieval times, streamline map-based workflows, and improve user experience across maps, cards, and printed outputs.
36 Commits • 16 Features
Sep 1, 2025September 2025 (Month: 2025-09) summary for the carma-wuppertal-collab repository. Focused on delivering business-value through data-query enhancements, map-related features, and a robust end-to-end printing/sharing workflow. Implemented incremental loading for related entities, optimized kartometrie performance with a caching layer, expanded map printing and sharing capabilities, and performed UI refinements to improve clarity and consistency. These changes reduce data retrieval times, streamline map-based workflows, and improve user experience across maps, cards, and printed outputs.
September 2025
August 2025
3 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — Repository: cischem? wait
August 2025
3 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — Repository: cischem? wait
July 2025
41 Commits • 9 Features
Jul 1, 2025Concise monthly summary for 2025-07 focused on delivering map UI improvements, feature work, and stability gains in the carma-wuppertal-collab repository. Emphasizes business value through enhanced map inspection workflows, clearer UI interactions, analytics readiness, and up-to-date linking to external resources.
41 Commits • 9 Features
Jul 1, 2025Concise monthly summary for 2025-07 focused on delivering map UI improvements, feature work, and stability gains in the carma-wuppertal-collab repository. Emphasizes business value through enhanced map inspection workflows, clearer UI interactions, analytics readiness, and up-to-date linking to external resources.
July 2025
June 2025
21 Commits • 4 Features
Jun 1, 2025June 2025 performance summary for carma-wuppertal-collab: Delivered targeted content positioning improvements and extensive mobile UX enhancements, boosting readability and mobile engagement. Key changes include text content positioning improvements, correction of initial paragraph positioning, broad mobile device responsive updates across layouts, and refined mobile links across variants /3–/6, plus the addition of the Quatt Wunkery feature.
June 2025
21 Commits • 4 Features
Jun 1, 2025June 2025 performance summary for carma-wuppertal-collab: Delivered targeted content positioning improvements and extensive mobile UX enhancements, boosting readability and mobile engagement. Key changes include text content positioning improvements, correction of initial paragraph positioning, broad mobile device responsive updates across layouts, and refined mobile links across variants /3–/6, plus the addition of the Quatt Wunkery feature.
May 2025
35 Commits • 11 Features
May 1, 2025May 2025 highlights for cisma-collab/carma-wuppertal-collab: Delivered a set of map-focused features and content enhancements, fixed a critical UI layout issue, and laid groundwork for external integrations and compliant content. Key features include ChatGPT-backed background map text generation, enhanced map help (Hilfeabschnitt) with extensive content, Discover explanation tooltip, Preview and Search capabilities, and Introduction scaffolding with a legal disclaimer. Substantial Background UDZ content updates and incremental UDZ feature improvements, plus Introduction Leerzeile support, improved readability and data coverage. Impact: better user guidance, faster discovery, and higher quality map content; enabled additional data sources and scalable content updates. Technologies/skills demonstrated: AI integration (ChatGPT), frontend/content scaffolding, incremental commits, and content governance.
35 Commits • 11 Features
May 1, 2025May 2025 highlights for cisma-collab/carma-wuppertal-collab: Delivered a set of map-focused features and content enhancements, fixed a critical UI layout issue, and laid groundwork for external integrations and compliant content. Key features include ChatGPT-backed background map text generation, enhanced map help (Hilfeabschnitt) with extensive content, Discover explanation tooltip, Preview and Search capabilities, and Introduction scaffolding with a legal disclaimer. Substantial Background UDZ content updates and incremental UDZ feature improvements, plus Introduction Leerzeile support, improved readability and data coverage. Impact: better user guidance, faster discovery, and higher quality map content; enabled additional data sources and scalable content updates. Technologies/skills demonstrated: AI integration (ChatGPT), frontend/content scaffolding, incremental commits, and content governance.
May 2025
April 2025
47 Commits • 26 Features
Apr 1, 2025April 2025 monthly highlights: Delivered a robust heat-exposure visualization stack and expanded climate-data coverage to enhance planning, risk assessment, and user experience. Implementations include a new Luftbild Hitzebelastungskarte with multi-iteration commits, plus heat-focused layers such as Hintergrundkarte Hitze, Gazetteer Hitze, Standort Hitze, and a fuzzy search capability for Hitzekarte. Significant stability and UX improvements across core mapping features (e.g., Mein Standort zentraler Block, Footer Orthophoto, Auflösung Orthofoto Kuturstadtplan, Kita-Finder, E-Fahrradkarte, X-and-Ride) accompanied by geoportal sharing fixes. Expanded data coverage for Klimaorte, Luftmessstationen, Potenzialflächenkarte and Umweltalarm, along with Gazetteer enhancements for Bäderkarte and broader UI improvements (B-Plan-Auskunft, Introduction with links). Demonstrated strong GIS/data-integration skills, iterative delivery, and cross-functional collaboration delivering measurable business value.
April 2025
47 Commits • 26 Features
Apr 1, 2025April 2025 monthly highlights: Delivered a robust heat-exposure visualization stack and expanded climate-data coverage to enhance planning, risk assessment, and user experience. Implementations include a new Luftbild Hitzebelastungskarte with multi-iteration commits, plus heat-focused layers such as Hintergrundkarte Hitze, Gazetteer Hitze, Standort Hitze, and a fuzzy search capability for Hitzekarte. Significant stability and UX improvements across core mapping features (e.g., Mein Standort zentraler Block, Footer Orthophoto, Auflösung Orthofoto Kuturstadtplan, Kita-Finder, E-Fahrradkarte, X-and-Ride) accompanied by geoportal sharing fixes. Expanded data coverage for Klimaorte, Luftmessstationen, Potenzialflächenkarte and Umweltalarm, along with Gazetteer enhancements for Bäderkarte and broader UI improvements (B-Plan-Auskunft, Introduction with links). Demonstrated strong GIS/data-integration skills, iterative delivery, and cross-functional collaboration delivering measurable business value.
March 2025
51 Commits • 28 Features
Mar 1, 2025March 2025 monthly summary for cismet-collab/carma-wuppertal-collab focused on delivering UX improvements, documentation, and map enhancements that optimize editor workflows and data discovery for Stadtplan, Kulturstadtplan, and Gazetteer. Major effort centered on Zen-Modus polish, CenterElement alignment, Gazetteer help refinements, and comprehensive documentation overhaul, alongside significant map features and reliability improvements.
51 Commits • 28 Features
Mar 1, 2025March 2025 monthly summary for cismet-collab/carma-wuppertal-collab focused on delivering UX improvements, documentation, and map enhancements that optimize editor workflows and data discovery for Stadtplan, Kulturstadtplan, and Gazetteer. Major effort centered on Zen-Modus polish, CenterElement alignment, Gazetteer help refinements, and comprehensive documentation overhaul, alongside significant map features and reliability improvements.
March 2025
February 2025
31 Commits • 9 Features
Feb 1, 2025February 2025: Delivered substantial enhancements to map visualization and guided workflows for the Carma Wuppertal Collab project, emphasizing user guidance, visual clarity, and consistency across components. The work focused on background map integration, help-overlay interplay, and UI rendering improvements, underpinned by strong bug-fix discipline and cross-cutting terminology updates.
February 2025
31 Commits • 9 Features
Feb 1, 2025February 2025: Delivered substantial enhancements to map visualization and guided workflows for the Carma Wuppertal Collab project, emphasizing user guidance, visual clarity, and consistency across components. The work focused on background map integration, help-overlay interplay, and UI rendering improvements, underpinned by strong bug-fix discipline and cross-cutting terminology updates.
January 2025
10 Commits • 3 Features
Jan 1, 2025January 2025: Delivered a streamlined help content experience for map-related features in cismet-collab/carma-wuppertal-collab. Implemented consolidation and reorganization of help sections for Karteninhalte (adding, investigating, and mobile usage) with renaming and reindexing; added a dedicated Karteninhalte drucken (print) help section; reorganized Digitaler Zwilling und Hintergrundkarte help areas with renaming, file-key updates, and textual corrections. Minor content corrections and consistency fixes across help topics were applied, improving user guidance and localization readiness. Business impact includes improved self-service support, faster onboarding, and reduced support overhead. Demonstrated skills include documentation architecture, repo-level refactoring, German-language content updates, and disciplined Git workflows.
10 Commits • 3 Features
Jan 1, 2025January 2025: Delivered a streamlined help content experience for map-related features in cismet-collab/carma-wuppertal-collab. Implemented consolidation and reorganization of help sections for Karteninhalte (adding, investigating, and mobile usage) with renaming and reindexing; added a dedicated Karteninhalte drucken (print) help section; reorganized Digitaler Zwilling und Hintergrundkarte help areas with renaming, file-key updates, and textual corrections. Minor content corrections and consistency fixes across help topics were applied, improving user guidance and localization readiness. Business impact includes improved self-service support, faster onboarding, and reduced support overhead. Demonstrated skills include documentation architecture, repo-level refactoring, German-language content updates, and disciplined Git workflows.
January 2025
December 2024
40 Commits • 16 Features
Dec 1, 2024December 2024: Navigation and data-query improvements in carma-wuppertal-collab. Delivered a robust secondary menu bar with FontAwesome icons, added and refined primary menu icons, and implemented a reliable Update entry. Advanced the Sachdatenabfrage with Info-Box corrections and related UI refinements. Polished the UI with secondary table layout fixes, text alignment via tooltips, and readability improvements. Expanded menu capabilities with extended card content loading/saving and a shared 'Teilen' feature, including iterative corrections. Fixed several polish bugs (empty lines, whitespace formatting, duplicate interactions) to improve stability and user experience.
December 2024
40 Commits • 16 Features
Dec 1, 2024December 2024: Navigation and data-query improvements in carma-wuppertal-collab. Delivered a robust secondary menu bar with FontAwesome icons, added and refined primary menu icons, and implemented a reliable Update entry. Advanced the Sachdatenabfrage with Info-Box corrections and related UI refinements. Polished the UI with secondary table layout fixes, text alignment via tooltips, and readability improvements. Expanded menu capabilities with extended card content loading/saving and a shared 'Teilen' feature, including iterative corrections. Fixed several polish bugs (empty lines, whitespace formatting, duplicate interactions) to improve stability and user experience.
November 2024
41 Commits • 9 Features
Nov 1, 2024November 2024 performance highlights for cismet-collab/carma-wuppertal-collab. Focused on delivering UI/navigation enhancements, robust linking/overlay capabilities, and UI consistency across modules to improve usability and time-to-value for end users. Key efforts spanned map navigation, orientation/link behavior, and cross-module UI refinements, while keeping formatting and spelling quality high to reduce support overhead.
41 Commits • 9 Features
Nov 1, 2024November 2024 performance highlights for cismet-collab/carma-wuppertal-collab. Focused on delivering UI/navigation enhancements, robust linking/overlay capabilities, and UI consistency across modules to improve usability and time-to-value for end users. Key efforts spanned map navigation, orientation/link behavior, and cross-module UI refinements, while keeping formatting and spelling quality high to reduce support overhead.
November 2024
October 2024
10 Commits • 3 Features
Oct 1, 2024October 2024 monthly summary for carma-wuppertal-collab. Delivered substantial UI and UX enhancements across Locator, Gazetteer, and Zoom controls, enabling richer interaction and data handling. Focused on user-facing features, data import capabilities, and visual polish to improve operator efficiency and map-based workflows.
October 2024
10 Commits • 3 Features
Oct 1, 2024October 2024 monthly summary for carma-wuppertal-collab. Delivered substantial UI and UX enhancements across Locator, Gazetteer, and Zoom controls, enabling richer interaction and data handling. Focused on user-facing features, data import capabilities, and visual polish to improve operator efficiency and map-based workflows.
Activity
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Quality Metrics
Correctness94.8%
Maintainability94.8%
Architecture91.2%
Performance93.4%
AI Usage20.2%
Skills & Technologies
Programming Languages
CSSHTMLJSXJavaScriptReactTypeScripttsx
Technical Skills
Code CleanupCode MaintenanceDocumentationFront End DevelopmentFront-end DevelopmentFrontend DevelopmentReactReact DevelopmentRefactoringTechnical WritingTypeScriptUI DevelopmentUI/UXUI/UX AdjustmentUI/UX Development
Repositories Contributed To
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