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Florian Amsallem

PROFILE

Florian Amsallem

Florian Amsallem developed and maintained core features for the OpenRailAssociation/osrd repository, focusing on backend systems, API design, and localization. Over twelve months, he delivered robust scheduling, simulation, and infrastructure management capabilities, implementing scalable APIs and optimizing database interactions using Rust, TypeScript, and SQL. His work included enhancing authentication, improving data serialization, and introducing round-trip planning endpoints, all while ensuring reliability and maintainability. Florian also led localization efforts, integrating Weblate-driven workflows for English, French, and Portuguese, and modernized build pipelines with Docker and CI/CD. His contributions demonstrated depth in system design, data modeling, and cross-team collaboration for production-ready software.

Overall Statistics

Feature vs Bugs

75%Features

Repository Contributions

130Total
Bugs
23
Commits
130
Features
70
Lines of code
12,159
Activity Months12

Work History

October 2025

1 Commits • 1 Features

Oct 1, 2025

October 2025: English Home section translations completed and localization pipeline enhanced for OpenRailAssociation/osrd. Achieved 100% coverage (630 strings) via Weblate, linked to OSRD/Translations project, enabling traceability and future updates. No major bugs reported this month; changes reviewed to ensure no regressions. This work improves English user experience and accelerates release readiness. Demonstrated proficiency in localization tooling, cross-team collaboration, and maintainable code quality.

September 2025

8 Commits • 5 Features

Sep 1, 2025

September 2025 performance summary for OpenRailAssociation/osrd: Delivered full bilingual UX through EN/FR localization for Operational Studies (505 strings in each language) and completed Home Page French localization (632 strings). Implemented data loading enhancements with the WorkerLoadEndpoint (formerly InfraLoadEndpoint) to support timetable data alongside infrastructure data. Fixed critical issues improving reliability: accurate cache miss reporting in pathfinding and timetable simulation, and stable pagination in EdioToast with explicit ORDER BY. Updated development tooling and runtime: flake.lock and related inputs refreshed; JDK upgraded to 21 with associated dependencies. These achievements reduce localization gaps, improve data processing reliability, ensure consistent pagination, and modernize the build/runtime stack, enabling faster deployment and better user value.

August 2025

44 Commits • 21 Features

Aug 1, 2025

OpenRailAssociation/osrd – August 2025 monthly summary focused on delivering business value through localization, API enhancements, reliability, and developer experience. Key work spanned frontend translations, Ed itoast feature delivery, infrastructure reliability, and tooling upgrades. The month combined user-facing improvements with behind-the-scenes stability work to enable scale and faster iteration.

July 2025

14 Commits • 8 Features

Jul 1, 2025

July 2025 (2025-07) monthly summary highlighting key deliverables across OpenRailAssociation/osrd and OpenRailAssociation/osrd-website. Focused on round-trip planning capabilities, simulation performance, API scalability, data model standardization, and security hardening. Business value delivered includes improved scheduling accuracy, faster large-dataset retrieval, more maintainable codebase, and safer infrastructure read operations.

June 2025

3 Commits • 1 Features

Jun 1, 2025

June 2025 performance summary for OpenRailAssociation/osrd: Delivered serialization and correctness improvements for Paced Train Exceptions, reducing payload and ensuring schedule edits reset state. Implemented serialization enhancement using serde_with skip_serializing_none and fixed start time reset on schedule edits. These changes improve data transfer efficiency, prevent stale data, and enhance reliability in train scheduling workflows. Demonstrated proficiency with Rust/serde, frontend-backend collaboration, and release hygiene with clear commit traces.

May 2025

6 Commits • 2 Features

May 1, 2025

Month 2025-05 — OpenRailAssociation/osrd: Delivered UX, localization, and maintenance improvements with measurable business value. Fixed InfraErrorCorrectorModal i18n interpolation to display correct messages when no fixes are found, improving user feedback in the infrastructure error correction editor. Implemented French translations for Infra Editor, STDCM Help, and Errors using Weblate, expanding accessibility for French-speaking users. Cleaned up API routing by removing deprecated /infra/{id} and eliminating unused frontend keys, reducing gateway configuration noise and improving maintainability. Commit traceability: 1bf829f2d33705040a9688d5fd621ae2b6fc572b; b70e5423e53a5d5d36d21d9cd130d89c93a6eb07; a73510684f66bfe26a7afe45be736df757e9c6d9; ca086397b9919a24b025dc86e6147a79f35f7fbc; 2c033415f30952ddd8681bd44c2e9fc8301cc45f; 8cfb4ece610224d924fb3b72f806c9b33ea8152c.

April 2025

10 Commits • 5 Features

Apr 1, 2025

April 2025: Delivered modernization, security, and reliability improvements for OpenRailAssociation/osrd. Key deliveries include dependency upgrades and Rust 2024 migration in editoast; refactoring for improved tracing and error handling in the worker loop; fixes to prevent orphan-queue infinite loops and stabilizing CI with health checks and retry strategies; repository housekeeping via CODEOWNERS reorganization and added Weblate badge for translation visibility. These changes enhance maintainability, reduce CI flakiness, and improve runtime observability while preserving functional behavior across the core osrd repo.

March 2025

7 Commits • 4 Features

Mar 1, 2025

March 2025 performance summary for OpenRailAssociation/osrd. Focused on security hardening, data access integrity, and infrastructure reliability to enable safer, faster releases and measurable business value. Key outcomes include strengthened authentication, improved access-controlled search, stable inter-service routing, updated tooling, and streamlined testing workflows.

February 2025

14 Commits • 8 Features

Feb 1, 2025

February 2025 performance-focused sprint for OpenRailAssociation/osrd. Key deliveries targeted business value and technical robustness across the train system: improved concurrency, secure storage access, and simplified deployment. Representative changes include: parallelized train batch execution with smaller batches, accelerating train schedule lookups; a switch to deadpool_redis with TLS and version pinning for secure, reliable Redis integration; removal of Valkey cluster mode to reduce configuration overhead; cache and lookup optimizations to reduce PostgreSQL load; and time-based activation for STDCM search windows across DB/API/client layers.

January 2025

6 Commits • 5 Features

Jan 1, 2025

January 2025: Delivered targeted front-end modernization, telemetry reliability, and comprehensive release/documentation improvements across OSRD and OSRD-Website. Key features include upgrading the front-end build to Vite with git describe support, extensive API/documentation improvements for Rolling Stock EffortCurve, and bilingual OSRD release and deployment documentation. A critical OTLP telemetry configuration fix for the gateway improved observability. Additionally, documentation enhancements clarified Kubernetes deployment for editoast services and linked roadmap to project boards, improving transparency and onboarding. These efforts reduce build friction, improve observability, and accelerate release readiness, leveraging Vite, Docker, OpenTelemetry, Rust/OpenAPI/TypeScript, and Kubernetes documentation practices.

December 2024

7 Commits • 4 Features

Dec 1, 2024

December 2024 monthly summary for OpenRailAssociation projects. This period focused on stabilizing core features, improving data accuracy, and preparing for community-led growth. Key deliverables include bug fixes that improve projection accuracy, a licensing visibility enhancement, tooling and healthcheck stability improvements, multilingual roadmap documentation, branding updates, and UI speed visualization improvements.

November 2024

10 Commits • 6 Features

Nov 1, 2024

November 2024: Delivered security, data integrity, and developer-experience improvements across the OpenRailAssociation OSRD and OSRD-website projects. Implemented cross-service authentication header refactor (including splitting x-remote-user into identity and name, and renaming the bypass header to x-osrd-skip-authz), added storage-backed group management with an admin CLI, fixed critical data integrity issues, and optimized CI/CD release workflows. Website branding updates, enhanced service architecture documentation, and publication of the OSRD #1 blog post to improve external visibility and onboarding.

Activity

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Quality Metrics

Correctness91.4%
Maintainability91.6%
Architecture89.4%
Performance87.2%
AI Usage20.2%

Skills & Technologies

Programming Languages

DockerfileEnglishFrenchHTMLJSONJavaJavaScriptKotlinMarkdownNix

Technical Skills

API DesignAPI DevelopmentAPI GatewayAPI Gateway ConfigurationAccess Control ManagementAlgorithm DevelopmentAlgorithm ImplementationAlgorithm OptimizationAsset ManagementAsynchronous ProgrammingAuthenticationAuthorizationBackend DevelopmentBloggingBug Fixing

Repositories Contributed To

3 repos

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

OpenRailAssociation/osrd

Nov 2024 Oct 2025
12 Months active

Languages Used

JavaKotlinPythonRustSQLShellTOMLTypeScript

Technical Skills

API GatewayAPI Gateway ConfigurationAccess Control ManagementAuthenticationBackend DevelopmentCI/CD

OpenRailAssociation/osrd-website

Nov 2024 Jul 2025
4 Months active

Languages Used

HTMLMarkdownTOML

Technical Skills

BloggingContent ManagementDocumentationGitHelmKubernetes

OpenRailAssociation/osrd-ui

Dec 2024 Dec 2024
1 Month active

Languages Used

TypeScript

Technical Skills

Data VisualizationFront-end DevelopmentTypeScript

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