OpenRefine/OpenRefine
Feb 2025 – Jan 2026
9 Months active
Languages Used
JavaScriptCSSHTMLJava
Technical Skills
Front End DevelopmentJavaScriptTestingUI/UX DevelopmentFront-end DevelopmentUI/UX Improvement
Sandra Mierz
PROFILE
Sandra Mierz
Overall Statistics
Feature vs Bugs
73%Features
Repository Contributions
12Total
Bugs
3
Commits
12
Features
8
Lines of code
22,699
Activity Months9
Your Network
35 people
Work History
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 monthly work summary for OpenRefine/OpenRefine: focus on dependency modernization and licensing compliance for UI components. Delivered migration of jQuery UI usage to npm, upgraded to 1.13.3, removed external dependencies, updated license information, and reorganized code to use node module paths. These changes improve maintainability, licensing compliance, and readiness for future upgrades.
1 Commits • 1 Features
Jan 1, 2026January 2026 monthly work summary for OpenRefine/OpenRefine: focus on dependency modernization and licensing compliance for UI components. Delivered migration of jQuery UI usage to npm, upgraded to 1.13.3, removed external dependencies, updated license information, and reorganized code to use node module paths. These changes improve maintainability, licensing compliance, and readiness for future upgrades.
January 2026
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for OpenRefine: Focused on UI reliability and asset correctness. Main deliverable: fix of the user interface icon path ensuring the correct icon renders across all views. No new features released this month; bug fix implemented with a precise code path correction and commit traceability. This work improves UI consistency, reduces user confusion, and supports ongoing UI quality metrics.
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for OpenRefine: Focused on UI reliability and asset correctness. Main deliverable: fix of the user interface icon path ensuring the correct icon renders across all views. No new features released this month; bug fix implemented with a precise code path correction and commit traceability. This work improves UI consistency, reduces user confusion, and supports ongoing UI quality metrics.
November 2025
2 Commits • 2 Features
Nov 1, 2025November 2025 — OpenRefine/OpenRefine delivered two high-impact updates focused on UI scalability and long-term maintainability. Key work centered on replacing raster assets with scalable vectors and deprecating legacy database extension APIs to reduce maintenance risk and simplify future changes. No critical bugs fixed this month; the work emphasized performance readability, and a cleaner extension surface to accelerate upcoming features.
2 Commits • 2 Features
Nov 1, 2025November 2025 — OpenRefine/OpenRefine delivered two high-impact updates focused on UI scalability and long-term maintainability. Key work centered on replacing raster assets with scalable vectors and deprecating legacy database extension APIs to reduce maintenance risk and simplify future changes. No critical bugs fixed this month; the work emphasized performance readability, and a cleaner extension surface to accelerate upcoming features.
November 2025
October 2025
3 Commits • 2 Features
Oct 1, 2025October 2025 monthly summary for OpenRefine/OpenRefine: Key backend and frontend improvements delivering stability, performance, and a modern UI aligned with current database deployments.
October 2025
3 Commits • 2 Features
Oct 1, 2025October 2025 monthly summary for OpenRefine/OpenRefine: Key backend and frontend improvements delivering stability, performance, and a modern UI aligned with current database deployments.
September 2025
1 Commits
Sep 1, 2025September 2025 monthly summary focusing on key accomplishments for OpenRefine/OpenRefine: - Key features delivered: Improved database import progress tracking with a robust, accurate progress calculation. The import progress counter now retrieves the total number of rows before import and uses this to compute a precise progress percentage, replacing the previous flawed progress tracking and significantly enhancing user experience during database imports. - Major bugs fixed: Database Import Progress Tracking Bug Fix. Corrected dysfunctional progress updates to ensure users see a reliable progress indicator during long-running database imports (tracked via commit d440aaead8414c18279b2cd6d94edbcfbe7d66a2; reference: #7439). - Overall impact and accomplishments: Increased reliability and predictability of long-running import workflows, reducing user confusion and potential support overhead. The fix improves perceived performance and trust in the import feature, contributing to higher user satisfaction and productivity in data ingestion tasks. - Technologies/skills demonstrated: Debugging and root-cause analysis in Java-based OpenRefine code, precise state management for UI progress, Git-based issue tracking and targeted commit execution, cross-functional collaboration to resolve a user-facing reliability issue.
1 Commits
Sep 1, 2025September 2025 monthly summary focusing on key accomplishments for OpenRefine/OpenRefine: - Key features delivered: Improved database import progress tracking with a robust, accurate progress calculation. The import progress counter now retrieves the total number of rows before import and uses this to compute a precise progress percentage, replacing the previous flawed progress tracking and significantly enhancing user experience during database imports. - Major bugs fixed: Database Import Progress Tracking Bug Fix. Corrected dysfunctional progress updates to ensure users see a reliable progress indicator during long-running database imports (tracked via commit d440aaead8414c18279b2cd6d94edbcfbe7d66a2; reference: #7439). - Overall impact and accomplishments: Increased reliability and predictability of long-running import workflows, reducing user confusion and potential support overhead. The fix improves perceived performance and trust in the import feature, contributing to higher user satisfaction and productivity in data ingestion tasks. - Technologies/skills demonstrated: Debugging and root-cause analysis in Java-based OpenRefine code, precise state management for UI progress, Git-based issue tracking and targeted commit execution, cross-functional collaboration to resolve a user-facing reliability issue.
September 2025
June 2025
1 Commits
Jun 1, 2025June 2025: Stability and data integrity improvements focused on the OpenRefine importer. Addressed a critical sequencing bug in blank column deletion to ensure data is fully parsed before removing blank columns, preventing data loss and incorrect column handling. Updated tests to reflect the correct behavior and to guard against regressions in the parsing pipeline. No new features released this month; the emphasis was on bug fixes, test coverage, and reliability improvements that reduce production risk and support consistent data import results.
June 2025
1 Commits
Jun 1, 2025June 2025: Stability and data integrity improvements focused on the OpenRefine importer. Addressed a critical sequencing bug in blank column deletion to ensure data is fully parsed before removing blank columns, preventing data loss and incorrect column handling. Updated tests to reflect the correct behavior and to guard against regressions in the parsing pipeline. No new features released this month; the emphasis was on bug fixes, test coverage, and reliability improvements that reduce production risk and support consistent data import results.
April 2025
1 Commits • 1 Features
Apr 1, 2025Concise monthly summary for 2025-04 focusing on key accomplishments in the OpenRefine/OpenRefine repo. Delivered a user-facing feature in the Wikibase integration and updated UI to support it, with clear business value and cross-functional collaboration.
1 Commits • 1 Features
Apr 1, 2025Concise monthly summary for 2025-04 focusing on key accomplishments in the OpenRefine/OpenRefine repo. Delivered a user-facing feature in the Wikibase integration and updated UI to support it, with clear business value and cross-functional collaboration.
April 2025
March 2025
1 Commits • 1 Features
Mar 1, 2025Month: 2025-03. Focused on UI asset modernization and code quality in the OpenRefine/OpenRefine repository, delivering a scalable vector asset upgrade and reinforcing asset management practices.
March 2025
1 Commits • 1 Features
Mar 1, 2025Month: 2025-03. Focused on UI asset modernization and code quality in the OpenRefine/OpenRefine repository, delivering a scalable vector asset upgrade and reinforcing asset management practices.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 summary for OpenRefine/OpenRefine: Implemented Column header Menu Simplification to streamline common column operations. This refactor consolidates 'Rename column' and 'Remove column' into the column header UI, removes redundant menu entries, and updates Cypress tests to align with the new menu structure. The change reduces navigation steps for frequent tasks, enhancing user productivity and maintainability for the project. No major bugs were reported or fixed this month.
1 Commits • 1 Features
Feb 1, 2025February 2025 summary for OpenRefine/OpenRefine: Implemented Column header Menu Simplification to streamline common column operations. This refactor consolidates 'Rename column' and 'Remove column' into the column header UI, removes redundant menu entries, and updates Cypress tests to align with the new menu structure. The change reduces navigation steps for frequent tasks, enhancing user productivity and maintainability for the project. No major bugs were reported or fixed this month.
February 2025
Activity
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Quality Metrics
Correctness95.8%
Maintainability90.0%
Architecture90.0%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
CSSHTMLJavaJavaScript
Technical Skills
Asset ManagementBackend DevelopmentCSSData ImportDatabase ConnectivityDatabase IntegrationDependency ManagementFront End DevelopmentFront-end DevelopmentFrontend DevelopmentHTMLImport/ExportJavaJava DevelopmentJavaScript
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