Deltares/fews-web-oc
Nov 2024 – May 2026
12 Months active
Languages Used
JavaScriptTypeScriptVueCSSHTMLVue.jsGLSLShell
Technical Skills
API IntegrationComponent DesignComponent DevelopmentError HandlingFront-end DevelopmentFrontend Development
Cees Voesenek
PROFILE
Cees Voesenek
Over twelve months, contributed to Deltares/fews-web-oc by building and refining advanced data visualization, task management, and workflow features for hydrological dashboards. Focused on modularizing components, improving type safety, and enhancing user experience, the work included extracting WebGL visualizers into reusable libraries, optimizing WMS data fetches, and standardizing date/time input controls. Leveraging TypeScript, Vue.js, and JavaScript, implemented robust error handling, state management, and UI/UX improvements such as animated streamlines, chart panning, and responsive side panels. Regularly refactored code for maintainability, improved performance, and reduced user-facing errors, resulting in a scalable, reliable, and maintainable frontend architecture.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
132Total
Bugs
18
Commits
132
Features
45
Lines of code
69,566
Activity Months12
Your Network
17 peopleSame Organization
@vortech.nl4
Work History
May 2026
13 Commits • 2 Features
May 1, 2026May 2026 monthly highlights for Deltares/fews-web-oc: Delivered substantial UI refactors and stability improvements that streamline topology and task panels, improve performance, and reduce user-facing errors. Key features delivered include Topology Side Panel Core UI Enhancements (modularized side panel components, immediate filtering of enabled panels, centralized active state in the root panel, renamed TopologyControls to TopologySidePanel, refreshed thresholds data from the root topology view, added home button to the more-info panel, standardized panel type naming, and removal of redundant emission paths); Task Overview Side Panel Enhancements (removed TaskRunsPanel and integrated into TaskOverviewSidePanel.vue with virtualization and improved task filtering); What-If Scenario Stability Fixes (prevent undefined templates, ensure properties update after the JSON schema is confirmed up-to-date, and standardize the spelling of "what-if"). These changes improve usability, reduce runtime errors, and simplify future maintenance. Technologies demonstrated: Vue.js componentization, centralized state management, panel virtualization, performance optimization, and code quality improvements.
13 Commits • 2 Features
May 1, 2026May 2026 monthly highlights for Deltares/fews-web-oc: Delivered substantial UI refactors and stability improvements that streamline topology and task panels, improve performance, and reduce user-facing errors. Key features delivered include Topology Side Panel Core UI Enhancements (modularized side panel components, immediate filtering of enabled panels, centralized active state in the root panel, renamed TopologyControls to TopologySidePanel, refreshed thresholds data from the root topology view, added home button to the more-info panel, standardized panel type naming, and removal of redundant emission paths); Task Overview Side Panel Enhancements (removed TaskRunsPanel and integrated into TaskOverviewSidePanel.vue with virtualization and improved task filtering); What-If Scenario Stability Fixes (prevent undefined templates, ensure properties update after the JSON schema is confirmed up-to-date, and standardize the spelling of "what-if"). These changes improve usability, reduce runtime errors, and simplify future maintenance. Technologies demonstrated: Vue.js componentization, centralized state management, panel virtualization, performance optimization, and code quality improvements.
May 2026
April 2026
10 Commits • 3 Features
Apr 1, 2026April 2026 — Deltares/fews-web-oc: delivered focused feature improvements targeting type safety, UI usability, and component architecture. No critical bugs recorded. The work enhances maintainability, developer velocity, and end-user experience with explicit commit-level traceability.
April 2026
10 Commits • 3 Features
Apr 1, 2026April 2026 — Deltares/fews-web-oc: delivered focused feature improvements targeting type safety, UI usability, and component architecture. No critical bugs recorded. The work enhances maintainability, developer velocity, and end-user experience with explicit commit-level traceability.
March 2026
23 Commits • 8 Features
Mar 1, 2026March 2026 focused on delivering core FEWS web improvements for deltares/fews-web-oc, prioritizing what-if modeling reliability, task management UX, and code quality. Key work targeted user-facing data integrity, responsive task telemetry, and maintainability to enable faster future iterations. Delivered significant feature enhancements, stabilized UX flows, and improved data schemas, with clear business value through more accurate scenario modeling and reduced user friction.
23 Commits • 8 Features
Mar 1, 2026March 2026 focused on delivering core FEWS web improvements for deltares/fews-web-oc, prioritizing what-if modeling reliability, task management UX, and code quality. Key work targeted user-facing data integrity, responsive task telemetry, and maintainability to enable faster future iterations. Delivered significant feature enhancements, stabilized UX flows, and improved data schemas, with clear business value through more accurate scenario modeling and reduced user friction.
March 2026
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for Deltares/fews-web-oc: Delivered a Custom Date/Time Input Control to standardize date/time input across the application, enhancing user experience and consistency in data handling. No major bugs reported this month. The change reduces input variance and improves data quality, maintainability, and consistency across forms.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for Deltares/fews-web-oc: Delivered a Custom Date/Time Input Control to standardize date/time input across the application, enhancing user experience and consistency in data handling. No major bugs reported this month. The change reduces input variance and improves data quality, maintainability, and consistency across forms.
October 2025
3 Commits • 2 Features
Oct 1, 2025Monthly performance summary for 2025-10 focusing on delivering reliability-enhancing WMS enhancements and aggregation capabilities in Deltares/fews-web-oc. Implemented WMS/PI request handling enhancements by centralizing WMS max-values time series in SpatialDisplayComponent and updating FEWS request dependencies; added AggregationPanel to support accumulation options for WMS layers, integrated into layer options and image source requests to visualize accumulated values. These changes improve reliability, prepare for future aggregation, and enable richer visualization for decision-makers. Key commits demonstrate cross-cutting improvements in frontend architecture and data flow.
3 Commits • 2 Features
Oct 1, 2025Monthly performance summary for 2025-10 focusing on delivering reliability-enhancing WMS enhancements and aggregation capabilities in Deltares/fews-web-oc. Implemented WMS/PI request handling enhancements by centralizing WMS max-values time series in SpatialDisplayComponent and updating FEWS request dependencies; added AggregationPanel to support accumulation options for WMS layers, integrated into layer options and image source requests to visualize accumulated values. These changes improve reliability, prepare for future aggregation, and enable richer visualization for decision-makers. Key commits demonstrate cross-cutting improvements in frontend architecture and data flow.
October 2025
June 2025
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for Deltares/fews-web-oc. Focused on delivering frontend visualization improvements, asset cleanup, and stability fixes to support scalable user experiences and lower maintenance costs. Highlights include significant visualization upgrades, asset rationalization, and integration of external bug fixes to improve interaction quality across charts.
June 2025
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for Deltares/fews-web-oc. Focused on delivering frontend visualization improvements, asset cleanup, and stability fixes to support scalable user experiences and lower maintenance costs. Highlights include significant visualization upgrades, asset rationalization, and integration of external bug fixes to improve interaction quality across charts.
May 2025
23 Commits • 7 Features
May 1, 2025May 2025: Deltares/fews-web-oc delivered significant reliability, performance, and maintainability improvements for time series visualization. Key work included refactoring the time series data path, enabling separate data fetches for table and chart, introducing robust error handling, and hardening chart/table interactions (thinning, panning, axis/domain handling). The month also strengthened code quality with typing improvements and dead code removal, resulting in faster, more predictable data rendering and improved user experience for time series dashboards.
23 Commits • 7 Features
May 1, 2025May 2025: Deltares/fews-web-oc delivered significant reliability, performance, and maintainability improvements for time series visualization. Key work included refactoring the time series data path, enabling separate data fetches for table and chart, introducing robust error handling, and hardening chart/table interactions (thinning, panning, axis/domain handling). The month also strengthened code quality with typing improvements and dead code removal, resulting in faster, more predictable data rendering and improved user experience for time series dashboards.
May 2025
April 2025
8 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for Deltares/fews-web-oc: Delivered a set of targeted visualization and data reliability improvements that enhance user experience, stability, and performance in the Web OC dashboard. The work focused on advanced wave crest visualization, WebGL streamline rendering, and robust time-series data handling.
April 2025
8 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for Deltares/fews-web-oc: Delivered a set of targeted visualization and data reliability improvements that enhance user experience, stability, and performance in the Web OC dashboard. The work focused on advanced wave crest visualization, WebGL streamline rendering, and robust time-series data handling.
February 2025
9 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for Deltares/fews-web-oc: Delivered user-facing search enhancements, fixed rendering and data precision issues, and improved developer tooling, driving value in reliability, performance, and maintainability.
9 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for Deltares/fews-web-oc: Delivered user-facing search enhancements, fixed rendering and data precision issues, and improved developer tooling, driving value in reliability, performance, and maintainability.
February 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for Deltares/fews-web-oc. Focused on improving maintainability and reuse of visualization components by modularizing the WebGL Visualizer into an external library. Key changes included extracting rendering logic, updating imports to use the new library, and establishing clean API boundaries for future reuse. No major bugs fixed this month. Overall impact: foundation for cross-project reuse, easier testing, and faster iteration on rendering features. Technologies demonstrated: JavaScript/TypeScript, WebGL, modular architecture, library packaging, and clear dependency boundaries.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for Deltares/fews-web-oc. Focused on improving maintainability and reuse of visualization components by modularizing the WebGL Visualizer into an external library. Key changes included extracting rendering logic, updating imports to use the new library, and establishing clean API boundaries for future reuse. No major bugs fixed this month. Overall impact: foundation for cross-project reuse, easier testing, and faster iteration on rendering features. Technologies demonstrated: JavaScript/TypeScript, WebGL, modular architecture, library packaging, and clear dependency boundaries.
December 2024
24 Commits • 9 Features
Dec 1, 2024Deltares/fews-web-oc – December 2024: Delivered a strong set of performance, reliability, and UX improvements across the animated vector workflow. Key features include WMS data fetch optimization for animated vectors with 2x downsampling, a major code architecture refactor that moves shared utilities to a library and introduces a form-schema composable, and comprehensive Workflow Form/UI enhancements with strong typing and improved user experience. Additional maintenance work improves stability and readability (HTML cleanup, deduplication, and removal of deprecated emits).
24 Commits • 9 Features
Dec 1, 2024Deltares/fews-web-oc – December 2024: Delivered a strong set of performance, reliability, and UX improvements across the animated vector workflow. Key features include WMS data fetch optimization for animated vectors with 2x downsampling, a major code architecture refactor that moves shared utilities to a library and introduces a form-schema composable, and comprehensive Workflow Form/UI enhancements with strong typing and improved user experience. Additional maintenance work improves stability and readability (HTML cleanup, deduplication, and removal of deprecated emits).
December 2024
November 2024
13 Commits • 5 Features
Nov 1, 2024Month: 2024-11 — Deltares/fews-web-oc Key features delivered: - Task Submission UI Enhancements: improved submission flow with description field, 'Approve immediately' option, and submission status feedback; added workflow scenario name field. (Commits: 4d823a80..., 28f155b0..., 31a1da77...) - Workflow Runtime Display Enhancements: switched runtime to a single, backend-backed value with human-friendly formatting. (Commits: 00cd8af9..., bf9f7c59..., 38c02886...) - RunTask Scheduling and DateTime Input: added start-time parameter (t0) and DateTimeField component for scheduling input. (Commits: 08091a56..., 3dceb623...) - Spatial Visualization Enhancement: prioritized animated streamlines for storytelling in visuals. (Commit: 97eeeebf...) - Workflow Store Type Safety and Cleanup: enum-based ProcessData, stronger typing, cleanup; includes TODO for future refinement. (Commits: cf88217b..., f779a88a..., 192f3a5f..., 823a076d...) Major bugs fixed: - Runtime display consistency: replaced range with a single value and ensured backend fetch for reliability. - Type-safety and stability: added missing types, converted to enums, fixed throw statements to prevent runtime errors. - Scheduling input validation: resolved issues around t0 handling and DateTimeField integration. Overall impact and accomplishments: - Streamlined task submission and scheduling, clearer runtime visibility, and stronger data integrity. These changes reduce troubleshooting time, accelerate task throughput, and improve maintainability for future work. Technologies/skills demonstrated: - Frontend React/TypeScript enhancements, backend data integration for runtime, robust typing with enums, DateTime handling, and enhanced data visualization with animated streamlines.
November 2024
13 Commits • 5 Features
Nov 1, 2024Month: 2024-11 — Deltares/fews-web-oc Key features delivered: - Task Submission UI Enhancements: improved submission flow with description field, 'Approve immediately' option, and submission status feedback; added workflow scenario name field. (Commits: 4d823a80..., 28f155b0..., 31a1da77...) - Workflow Runtime Display Enhancements: switched runtime to a single, backend-backed value with human-friendly formatting. (Commits: 00cd8af9..., bf9f7c59..., 38c02886...) - RunTask Scheduling and DateTime Input: added start-time parameter (t0) and DateTimeField component for scheduling input. (Commits: 08091a56..., 3dceb623...) - Spatial Visualization Enhancement: prioritized animated streamlines for storytelling in visuals. (Commit: 97eeeebf...) - Workflow Store Type Safety and Cleanup: enum-based ProcessData, stronger typing, cleanup; includes TODO for future refinement. (Commits: cf88217b..., f779a88a..., 192f3a5f..., 823a076d...) Major bugs fixed: - Runtime display consistency: replaced range with a single value and ensured backend fetch for reliability. - Type-safety and stability: added missing types, converted to enums, fixed throw statements to prevent runtime errors. - Scheduling input validation: resolved issues around t0 handling and DateTimeField integration. Overall impact and accomplishments: - Streamlined task submission and scheduling, clearer runtime visibility, and stronger data integrity. These changes reduce troubleshooting time, accelerate task throughput, and improve maintainability for future work. Technologies/skills demonstrated: - Frontend React/TypeScript enhancements, backend data integration for runtime, robust typing with enums, DateTime handling, and enhanced data visualization with animated streamlines.
Activity
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Quality Metrics
Correctness91.4%
Maintainability89.2%
Architecture87.0%
Performance85.2%
AI Usage20.8%
Skills & Technologies
Programming Languages
CSSGLSLHTMLJSONJavaScriptShellTypeScriptVueVue.jsYAML
Technical Skills
API IntegrationAutomationCI/CDCSS StylingChart InteractionChart LibrariesChart.jsCode FormattingCode RefactoringComponent DesignComponent DevelopmentComposable FunctionsData FetchingData ValidationData Visualization
Repositories Contributed To
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