opentripplanner/OpenTripPlanner
Jan 2026 – Jun 2026
6 Months active
Languages Used
JavaGraphQLMarkdownYAML
Technical Skills
API DesignAPI designCode MaintenanceDocumentationJavaRefactoring
Sigurd Totland
PROFILE
Sigurd Totland
Worked on the opentripplanner/OpenTripPlanner repository, delivering core transit routing features and real-time data enhancements over six months. Focused on modular API development and backend improvements, they implemented on-board access routing, standardized extra journey handling, and integrated SIRI-based real-time updates. Their approach emphasized code maintainability through targeted refactoring, improved documentation, and expanded test coverage, particularly for edge cases and new API endpoints. Using Java, GraphQL, and Maven, they enhanced routing robustness, clarified error handling, and aligned API schemas with evolving data models. The work resulted in safer iterations, more reliable trip planning, and a smoother onboarding experience for future contributors.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
59Total
Bugs
6
Commits
59
Features
15
Lines of code
1,761,420
Activity Months6
Your Network
56 peopleShared Repositories
56
Work History
June 2026
4 Commits • 2 Features
Jun 1, 2026June 2026 monthly summary focusing on delivering on-board routing capabilities and API enhancements for OpenTripPlanner, with fixes to ensure stability and deprecation of outdated fields.
4 Commits • 2 Features
Jun 1, 2026June 2026 monthly summary focusing on delivering on-board routing capabilities and API enhancements for OpenTripPlanner, with fixes to ensure stability and deprecation of outdated fields.
June 2026
May 2026
2 Commits • 1 Features
May 1, 2026Monthly work summary for 2026-05 focusing on feature standardization and test coverage for extra journeys in OpenTripPlanner. Delivered a consistent realtimeExtraJourney flag across trips and added tests validating both planned and real-time updates.
May 2026
2 Commits • 1 Features
May 1, 2026Monthly work summary for 2026-05 focusing on feature standardization and test coverage for extra journeys in OpenTripPlanner. Delivered a consistent realtimeExtraJourney flag across trips and added tests validating both planned and real-time updates.
April 2026
11 Commits • 3 Features
Apr 1, 2026April 2026 monthly summary focused on delivering modular, API-friendly improvements to OpenTripPlanner with a clear emphasis on real-time data support and developer experience. The work completed in 2026-04 centers on API cleanliness, better separation of concerns, and ensuring the real-time journey surface is accurate and well-documented for downstream integrations. Key features delivered: - AccessEgressFetcher API cleanup and documentation: Renamed class to AccessEgressFetcher and improved API docs and Javadocs for constructors and class. Commits show incremental documentation improvements and final PR feedback application. - Routing: Extract and initialize RequestPreProcessor: Isolated request preprocessing into a dedicated RequestPreProcessor class and wired it in DefaultRoutingService constructor to improve modularity and reduce redundancy. - Real-time journey data: ExtraJourney support and related documentation: Added a new extraJourney flag to DatedServiceJourney for SIRI realtime updates, extended isExtraJourney to cover both planned and realtime data, updated GraphQL schema, and managed a rollback path for ExtraJourney exposure. Documentation updates accompany these changes. Major bugs fixed: - No explicit major bugs fixed this month were reported in the work items. The focus was on feature delivery, code structure improvements, and documentation accuracy rather than bug fixes. Overall impact and accomplishments: - Improved code modularity and maintainability by extracting RequestPreProcessor and centralizing its initialization. - Clearer API and class responsibilities through the AccessEgressFetcher rename and enhanced constructor documentation, aiding long-term maintenance and onboarding. - Enhanced real-time journey data handling with ExtraJourney support and accurate exposure controls, aligning with real-time data streams and downstream GraphQL consumers. - Documentation improvements across features, improving developer experience and reducing onboarding time for contributors. Technologies/skills demonstrated: - Java refactoring and clean-up (class renaming, constructor Javadoc) - Modular design and single-responsibility implementation (RequestPreProcessor extraction) - Real-time data modeling and exposure control (ExtraJourney, isExtraJourney, DatedServiceJourney) - GraphQL schema alignment with data model changes - Documentation hygiene and PR feedback incorporation
11 Commits • 3 Features
Apr 1, 2026April 2026 monthly summary focused on delivering modular, API-friendly improvements to OpenTripPlanner with a clear emphasis on real-time data support and developer experience. The work completed in 2026-04 centers on API cleanliness, better separation of concerns, and ensuring the real-time journey surface is accurate and well-documented for downstream integrations. Key features delivered: - AccessEgressFetcher API cleanup and documentation: Renamed class to AccessEgressFetcher and improved API docs and Javadocs for constructors and class. Commits show incremental documentation improvements and final PR feedback application. - Routing: Extract and initialize RequestPreProcessor: Isolated request preprocessing into a dedicated RequestPreProcessor class and wired it in DefaultRoutingService constructor to improve modularity and reduce redundancy. - Real-time journey data: ExtraJourney support and related documentation: Added a new extraJourney flag to DatedServiceJourney for SIRI realtime updates, extended isExtraJourney to cover both planned and realtime data, updated GraphQL schema, and managed a rollback path for ExtraJourney exposure. Documentation updates accompany these changes. Major bugs fixed: - No explicit major bugs fixed this month were reported in the work items. The focus was on feature delivery, code structure improvements, and documentation accuracy rather than bug fixes. Overall impact and accomplishments: - Improved code modularity and maintainability by extracting RequestPreProcessor and centralizing its initialization. - Clearer API and class responsibilities through the AccessEgressFetcher rename and enhanced constructor documentation, aiding long-term maintenance and onboarding. - Enhanced real-time journey data handling with ExtraJourney support and accurate exposure controls, aligning with real-time data streams and downstream GraphQL consumers. - Documentation improvements across features, improving developer experience and reducing onboarding time for contributors. Technologies/skills demonstrated: - Java refactoring and clean-up (class renaming, constructor Javadoc) - Modular design and single-responsibility implementation (RequestPreProcessor extraction) - Real-time data modeling and exposure control (ExtraJourney, isExtraJourney, DatedServiceJourney) - GraphQL schema alignment with data model changes - Documentation hygiene and PR feedback incorporation
April 2026
March 2026
22 Commits • 3 Features
Mar 1, 2026March 2026 monthly summary for opentripplanner/OpenTripPlanner: Delivered a targeted set of bug fixes and major refactors to improve accuracy, stability, and maintainability. The work focused on trip-time filtering correctness, deterministic tariff-zone sorting for Quay/StopPlace, and API/data-structure cleanups that reduce maintenance burden and enable faster future iterations. Expanded test coverage around service-date groupings and edge cases (midnight-crossing, ring routes) and documented key warnings to reduce developer confusion. Business impact includes more reliable trip results for users, fewer regressions during releases, and smoother onboarding for new contributors.
March 2026
22 Commits • 3 Features
Mar 1, 2026March 2026 monthly summary for opentripplanner/OpenTripPlanner: Delivered a targeted set of bug fixes and major refactors to improve accuracy, stability, and maintainability. The work focused on trip-time filtering correctness, deterministic tariff-zone sorting for Quay/StopPlace, and API/data-structure cleanups that reduce maintenance burden and enable faster future iterations. Expanded test coverage around service-date groupings and edge cases (midnight-crossing, ring routes) and documented key warnings to reduce developer confusion. Business impact includes more reliable trip results for users, fewer regressions during releases, and smoother onboarding for new contributors.
February 2026
9 Commits • 2 Features
Feb 1, 2026February 2026 monthly summary for opentripplanner/OpenTripPlanner: real-time data enhancements with SIRI integration and API exposure; code quality and documentation improvements; test stability fixes; and targeted refactors to improve maintainability and onboarding. Highlights deliver business value by improving accuracy of trip times, API reliability, and maintainability of the codebase.
9 Commits • 2 Features
Feb 1, 2026February 2026 monthly summary for opentripplanner/OpenTripPlanner: real-time data enhancements with SIRI integration and API exposure; code quality and documentation improvements; test stability fixes; and targeted refactors to improve maintainability and onboarding. Highlights deliver business value by improving accuracy of trip times, API reliability, and maintainability of the codebase.
February 2026
January 2026
11 Commits • 4 Features
Jan 1, 2026January 2026 (2026-01) monthly summary for opentripplanner/OpenTripPlanner focused on delivering core on-board capabilities, improving routing robustness, and elevating code quality to reduce operational risk and enable safer future iterations. Business value centered on faster boarding, more reliable itineraries, and clearer error handling.
January 2026
11 Commits • 4 Features
Jan 1, 2026January 2026 (2026-01) monthly summary for opentripplanner/OpenTripPlanner focused on delivering core on-board capabilities, improving routing robustness, and elevating code quality to reduce operational risk and enable safer future iterations. Business value centered on faster boarding, more reliable itineraries, and clearer error handling.
Activity
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Quality Metrics
Correctness97.0%
Maintainability93.2%
Architecture93.2%
Performance92.6%
AI Usage21.4%
Skills & Technologies
Programming Languages
GraphQLJavaMarkdownYAML
Technical Skills
API DesignAPI DevelopmentAPI DocumentationAPI designAPI developmentBackend DevelopmentCode MaintenanceCode OptimizationContinuous IntegrationDocumentationGraphQLGraphQL APIJavaMavenObject-Oriented Programming
Repositories Contributed To
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