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Valentin Chanas

PROFILE

Valentin Chanas

Over 11 months, Anisometropie contributed to the OpenRailAssociation/osrd and osrd-ui repositories by building interactive data visualization features and robust UI components for railway operations. They engineered enhancements such as dynamic Space-Time Chart zoom, timetable exception management, and accessible drag-and-drop controls, using React, TypeScript, and CSS. Their technical approach emphasized maintainable state management with Redux, modular component design, and comprehensive end-to-end testing. By refactoring chart libraries, optimizing performance, and aligning with evolving APIs, Anisometropie improved reliability and user experience. Their work addressed complex UI challenges, reduced technical debt, and enabled faster, safer feature delivery for operational planning tools.

Overall Statistics

Feature vs Bugs

68%Features

Repository Contributions

60Total
Bugs
11
Commits
60
Features
23
Lines of code
7,776
Activity Months11

Work History

September 2025

1 Commits • 1 Features

Sep 1, 2025

September 2025: Delivered targeted UI improvements for timetable management in OpenRailAssociation/osrd, including a new timetable-edited-element with precise padding and a reusable hide-train-details mixin to reduce clutter during edits. Completed a frontend bug fix addressing occurrences menu styling to ensure consistent UI behavior. These changes improve operator efficiency, reduce editing friction, and enhance code maintainability.

August 2025

2 Commits • 1 Features

Aug 1, 2025

August 2025: Delivered end-to-end testing coverage and a new timetable visualization for the projection feature in OpenRailAssociation/osrd. The work enhances reliability, visibility, and decision speed for projection scenarios, supporting safer releases and quicker QA feedback.

July 2025

5 Commits • 2 Features

Jul 1, 2025

July 2025 performance summary for OpenRailAssociation/osrd focusing on front-end work around Space-Time Chart enhancements, API compatibility, and accessibility improvements. The changes improved projection reliability after API changes, enhanced situational awareness by visualizing occurrences and exceptions, and boosted user interaction efficiency with optimized drag-and-drop and keyboard-accessible controls. This supports higher reliability for train projections, better operator insight, and a more maintainable front-end codebase.

June 2025

10 Commits • 2 Features

Jun 1, 2025

June 2025 monthly summary for OpenRailAssociation/osrd: Delivered end-to-end Pace Train Exceptions Management, UI enhancements for editing paced trains, and targeted bug fixes that improve reliability, user experience, and developer productivity. The work adds business value through robust exception handling workflows, clearer UI behavior during edits, and faster feedback loops from the CI/watch experience.

May 2025

2 Commits • 2 Features

May 1, 2025

May 2025 Monthly Summary — OpenRailAssociation/osrd: delivered features that boost scheduling flexibility and charting reliability, with strong business value in operations planning and data accuracy.

April 2025

2 Commits • 2 Features

Apr 1, 2025

April 2025 monthly summary focusing on feature delivery and user experience improvements across two repositories. Delivered two notable UI enhancements with clear business value: improved zoom interaction control during zoom area selection and enhanced timetable readability for paced trains. Emphasis on precision, usability, and UI consistency, with cross-repo collaboration to align with design system standards. No critical bugs reported this month; stability maintained to support feature rollouts and future iterations.

March 2025

9 Commits • 2 Features

Mar 1, 2025

March 2025 monthly summary for OpenRailAssociation projects. Delivered impactful frontend enhancements to improve data exploration, UI stability, and maintainability across two repositories (osrd and osrd-ui).

February 2025

10 Commits • 4 Features

Feb 1, 2025

February 2025 monthly summary for OpenRailAssociation product teams, focusing on delivering robust SpaceTimeChart UI enhancements and stabilization of timetable rendering performance. The work emphasizes business value through improved data visualization accuracy, interactive capabilities, and a more responsive user experience for operators and planners.

January 2025

13 Commits • 4 Features

Jan 1, 2025

Concise monthly summary for 2025-01 focusing on business value and technical achievements across OpenRailAssociation/osrd-ui and OpenRailAssociation/osrd. Key features delivered include Slider Component Enhancements and Manchette Space-Time Chart Zoom/Layout improvements, Space-Time Chart Horizontal Zoom, and Timetable Performance improvements. Major bugs fixed include Timetable Rendering Stability (safe keys) and Frontend Dev Server Startup fix. The work improved UX responsiveness, rendering performance, and reliability, enabling faster feature delivery and a more maintainable codebase. Technologies/skills demonstrated include React component design, keyboard accessibility, cross-browser CSS, performance optimization via virtualization and memoization, and robust development workflow.

December 2024

4 Commits • 2 Features

Dec 1, 2024

December 2024 monthly summary for OpenRailAssociation/osrd-ui. Delivered key user-facing enhancements and code maintenance improvements that reduce technical debt while enhancing configurability and UX.

November 2024

2 Commits • 1 Features

Nov 1, 2024

Month: 2024-11 — concise monthly summary focusing on key accomplishments, business impact, and technical achievements across the OpenRailAssociation repositories.

Activity

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Quality Metrics

Correctness85.8%
Maintainability85.4%
Architecture80.0%
Performance81.6%
AI Usage20.4%

Skills & Technologies

Programming Languages

CSSJavaScriptSCSSTypeScriptYAML

Technical Skills

API IntegrationAccessibilityBuild ToolsCSSCSS StylingCanvas APIChart DevelopmentChart InteractionChart LibrariesCode RefactoringComponent DevelopmentContext APIData VisualizationDependency ManagementEnd-to-End Testing

Repositories Contributed To

2 repos

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

OpenRailAssociation/osrd

Nov 2024 Sep 2025
10 Months active

Languages Used

YAMLJavaScriptSCSSTypeScriptCSS

Technical Skills

Dependency ManagementFront End DevelopmentPerformance OptimizationReactUI DevelopmentChart Interaction

OpenRailAssociation/osrd-ui

Nov 2024 Apr 2025
6 Months active

Languages Used

CSSJavaScriptTypeScript

Technical Skills

CSSComponent DevelopmentFront-end DevelopmentReactStorybookUI/UX Design

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