opentripplanner/OpenTripPlanner
Feb 2026 – Apr 2026
3 Months active
Languages Used
Java
Technical Skills
Cross-Platform DevelopmentFile HandlingJavaJSON handlingunit testingAPI Development
Arnljot Arntsen
PROFILE
Arnljot Arntsen
Contributed to the OpenTripPlanner repository by enhancing carpool trip matching through the development of time-based filtering, aligning passenger requests with trip schedules for improved routing accuracy. Focused on cross-platform reliability, the work addressed Windows compatibility issues by normalizing line endings and ensuring consistent file handling across operating systems. Refactored error handling and JSON pretty printing to further strengthen code maintainability and readability. Leveraged Java for core development, applying skills in API development, software architecture, and unit testing. The contributions reduced environment-specific bugs, improved developer experience, and delivered tangible improvements to carpooling features and cross-platform stability within the project.
Overall Statistics
Feature vs Bugs
33%Features
Repository Contributions
3Total
Bugs
2
Commits
3
Features
1
Lines of code
2,913
Activity Months3
Your Network
66 peopleSame Organization
@entur.org10
Shared Repositories
56
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Work History
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026: OpenTripPlanner work focused on enhancing carpool trip matching through time-based filtering. Implemented time filters for carpool trips and itineraries to better align passenger requests with schedules, including end-to-end filtering (pre-filtering candidate trips and post-filtering routed itineraries). This feature, tracked in commit f9ff3f20dde40220273c2a38f9faedbce0419199, strengthens routing accuracy and user trust in carpooling options.
1 Commits • 1 Features
Apr 1, 2026April 2026: OpenTripPlanner work focused on enhancing carpool trip matching through time-based filtering. Implemented time filters for carpool trips and itineraries to better align passenger requests with schedules, including end-to-end filtering (pre-filtering candidate trips and post-filtering routed itineraries). This feature, tracked in commit f9ff3f20dde40220273c2a38f9faedbce0419199, strengthens routing accuracy and user trust in carpooling options.
April 2026
March 2026
1 Commits
Mar 1, 2026March 2026 monthly summary for OpenTripPlanner (opentripplanner/OpenTripPlanner). Focused on reliability, cross-platform consistency, and code quality in core repository.
March 2026
1 Commits
Mar 1, 2026March 2026 monthly summary for OpenTripPlanner (opentripplanner/OpenTripPlanner). Focused on reliability, cross-platform consistency, and code quality in core repository.
February 2026
1 Commits
Feb 1, 2026February 2026 — OpenTripPlanner (opentripplanner/OpenTripPlanner): Focused on stabilizing cross-platform file handling and Windows compatibility. Delivered a critical bug fix to normalize line endings and ensure consistent file writes across Windows and Unix-like environments, addressing build failures and improving developer experience.
1 Commits
Feb 1, 2026February 2026 — OpenTripPlanner (opentripplanner/OpenTripPlanner): Focused on stabilizing cross-platform file handling and Windows compatibility. Delivered a critical bug fix to normalize line endings and ensure consistent file writes across Windows and Unix-like environments, addressing build failures and improving developer experience.
February 2026
Activity
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Quality Metrics
Correctness80.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage26.6%
Skills & Technologies
Programming Languages
Java
Technical Skills
API DevelopmentCross-Platform DevelopmentFile HandlingJSON handlingJavaSoftware ArchitectureUnit Testingunit testing
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