SchweizerischeBundesbahnen/DAS
Oct 2024 – Feb 2026
17 Months active
Languages Used
DartSwiftYAMLJavaJavaScriptPythonSQLSVG
Technical Skills
Backend IntegrationCI/CDCode QualityDartDependency InjectionFile Management
Thomas
PROFILE
Thomas
Thomas Bomatter developed and maintained core features for the SchweizerischeBundesbahnen/DAS repository, focusing on train journey visualization, real-time data processing, and robust UI/UX improvements. He engineered solutions such as dynamic journey tables, break load slip management, and connectivity indicators, leveraging Dart and Flutter for cross-platform mobile development. His work included backend integration, state management, and automated testing to ensure reliability and maintainability. By implementing features like Splunk logging, OAuth-based MQTT authentication, and localization, Thomas addressed operational needs for safety, data integrity, and multilingual support. His contributions demonstrated depth in both architectural refactoring and targeted bug resolution across the codebase.
Overall Statistics
Feature vs Bugs
77%Features
Repository Contributions
115Total
Bugs
15
Commits
115
Features
51
Lines of code
85,502
Activity Months17
Your Network
35 peopleSame Organization
@sbb.ch31
Shared Repositories
4
Work History
February 2026
5 Commits • 2 Features
Feb 1, 2026February 2026 — SchweizerischeBundesbahnen/DAS: Focused on stabilizing formation data handling, delivering real-time formation refresh, and enhancing journey table UI to improve operator visibility and data integrity. Business value achieved through real-time data processing, clearer state indicators, and robust UI behavior, supported by targeted tests.
5 Commits • 2 Features
Feb 1, 2026February 2026 — SchweizerischeBundesbahnen/DAS: Focused on stabilizing formation data handling, delivering real-time formation refresh, and enhancing journey table UI to improve operator visibility and data integrity. Business value achieved through real-time data processing, clearer state indicators, and robust UI behavior, supported by targeted tests.
February 2026
January 2026
4 Commits • 3 Features
Jan 1, 2026January 2026 monthly summary for SchweizerischeBundesbahnen/DAS. Delivered three primary feature updates with targeted fixes to improve data clarity, UI consistency, and maintainability. Break Load Slip received localization, header, and styling polish; Journey table improvements reduced redundancy by showing network changes only when the type changes; Android app refactor modernized architecture, updated device specs/permissions, and expanded integration test coverage. Together these changes improve user experience, reduce styling issues, strengthen testability, and accelerate release readiness.
January 2026
4 Commits • 3 Features
Jan 1, 2026January 2026 monthly summary for SchweizerischeBundesbahnen/DAS. Delivered three primary feature updates with targeted fixes to improve data clarity, UI consistency, and maintainability. Break Load Slip received localization, header, and styling polish; Journey table improvements reduced redundancy by showing network changes only when the type changes; Android app refactor modernized architecture, updated device specs/permissions, and expanded integration test coverage. Together these changes improve user experience, reduce styling issues, strengthen testability, and accelerate release readiness.
December 2025
6 Commits • 2 Features
Dec 1, 2025December 2025 (2025-12): Delivered two high-impact features in SchweizerischeBundesbahnen/DAS that advance operations and safety: 1) Break load slips management in Journey Management System with enhanced UI, car carrier display, break slip modal, ETag-based update handling, and change highlighting; 2) Power grid overload notifications with localization and audio alerts. Improvements strengthen data integrity, reduce manual work, and improve operator awareness across languages, enabling faster and safer decision-making. Technical accomplishments include optimistic concurrency control, UI/UX enhancements, and multilingual alerting.
6 Commits • 2 Features
Dec 1, 2025December 2025 (2025-12): Delivered two high-impact features in SchweizerischeBundesbahnen/DAS that advance operations and safety: 1) Break load slips management in Journey Management System with enhanced UI, car carrier display, break slip modal, ETag-based update handling, and change highlighting; 2) Power grid overload notifications with localization and audio alerts. Improvements strengthen data integrity, reduce manual work, and improve operator awareness across languages, enabling faster and safer decision-making. Technical accomplishments include optimistic concurrency control, UI/UX enhancements, and multilingual alerting.
December 2025
November 2025
3 Commits • 2 Features
Nov 1, 2025Concise monthly summary for SchweizerischeBundesbahnen/DAS (Nov 2025): Delivered UI modernization and data-flow improvements that directly enhance user experience, stability, and development velocity. Key work included a header/UI redesign with refactored components and updated tests, stabilization of the footer rendering to eliminate flicker, and a journey-position refactor that improves data flow and test reliability. These changes reduce maintenance overhead, improve CI cleanliness, and enable faster iterations in subsequent sprints.
November 2025
3 Commits • 2 Features
Nov 1, 2025Concise monthly summary for SchweizerischeBundesbahnen/DAS (Nov 2025): Delivered UI modernization and data-flow improvements that directly enhance user experience, stability, and development velocity. Key work included a header/UI redesign with refactored components and updated tests, stabilization of the footer rendering to eliminate flicker, and a journey-position refactor that improves data flow and test reliability. These changes reduce maintenance overhead, improve CI cleanliness, and enable faster iterations in subsequent sprints.
October 2025
9 Commits • 4 Features
Oct 1, 2025October 2025 focused on delivering high-impact features for the DAS app with safety-first journey navigation, improved visualization, and stronger developer/docs support. Key work included refining journey position calculation with signal-first logic, implementing replacement train series notifications, enhancing train-journey view visuals, and updating deep-link documentation. This work improves safety, reliability, user experience, and maintainability, enabling faster incident response and clearer journey data for operators and end users. Technologies demonstrated include algorithmic prioritization, UI polish, notification flows, and comprehensive documentation.
9 Commits • 4 Features
Oct 1, 2025October 2025 focused on delivering high-impact features for the DAS app with safety-first journey navigation, improved visualization, and stronger developer/docs support. Key work included refining journey position calculation with signal-first logic, implementing replacement train series notifications, enhancing train-journey view visuals, and updating deep-link documentation. This work improves safety, reliability, user experience, and maintainability, enabling faster incident response and clearer journey data for operators and end users. Technologies demonstrated include algorithmic prioritization, UI polish, notification flows, and comprehensive documentation.
October 2025
September 2025
10 Commits • 5 Features
Sep 1, 2025September 2025 monthly summary for SchweizerischeBundesbahnen/DAS focusing on features delivered, bugs fixed, and overall impact. The work improved reliability, data accuracy, and observability while enabling safer feature rollout through flags and translations.
September 2025
10 Commits • 5 Features
Sep 1, 2025September 2025 monthly summary for SchweizerischeBundesbahnen/DAS focusing on features delivered, bugs fixed, and overall impact. The work improved reliability, data accuracy, and observability while enabling safer feature rollout through flags and translations.
August 2025
3 Commits • 3 Features
Aug 1, 2025August 2025 monthly summary for SchweizerischeBundesbahnen/DAS: Delivered core UX features improving train journey visualization, enhanced user control over visuals, and localization. Implemented ADL Message feature, Gradient Visibility Toggle, and Brightness Control with Localization Improvements. Achieved notable business value through improved situational awareness, per-user customization, and faster iteration with component refactors and targeted fixes.
3 Commits • 3 Features
Aug 1, 2025August 2025 monthly summary for SchweizerischeBundesbahnen/DAS: Delivered core UX features improving train journey visualization, enhanced user control over visuals, and localization. Implemented ADL Message feature, Gradient Visibility Toggle, and Brightness Control with Localization Improvements. Achieved notable business value through improved situational awareness, per-user customization, and faster iteration with component refactors and targeted fixes.
August 2025
July 2025
7 Commits • 3 Features
Jul 1, 2025July 2025 (2025-07) performance snapshot for SchweizerischeBundesbahnen/DAS: focus on UI polish, data clarity, test reliability, and environment connectivity. The activities delivered measurable business value through improved user readability, more accurate data presentation, and stronger release confidence.
July 2025
7 Commits • 3 Features
Jul 1, 2025July 2025 (2025-07) performance snapshot for SchweizerischeBundesbahnen/DAS: focus on UI polish, data clarity, test reliability, and environment connectivity. The activities delivered measurable business value through improved user readability, more accurate data presentation, and stronger release confidence.
June 2025
10 Commits • 5 Features
Jun 1, 2025June 2025 for SchweizerischeBundesbahnen/DAS: delivered core features, stabilized testing, and modernized the data layer to improve reliability, security, and user experience. Key outcomes include feature enhancements, stability fixes, and groundwork for maintainability and performance.
10 Commits • 5 Features
Jun 1, 2025June 2025 for SchweizerischeBundesbahnen/DAS: delivered core features, stabilized testing, and modernized the data layer to improve reliability, security, and user experience. Key outcomes include feature enhancements, stability fixes, and groundwork for maintainability and performance.
June 2025
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 – SchweizerischeBundesbahnen/DAS: Focused on strengthening CI/CD reliability for iOS BrowserStack testing and improving test maintainability. Key features delivered: - iOS BrowserStack CI/CD pipeline enhancements: added manual triggering and optimized the test matrix to accelerate and balance coverage. Related commit: 575ada4cccb53ca1f0f9933e47253372b7240e17 (chore: ios browserstack improvements (#852)). - Refactored the integration-test helper for dismissing modal sheets to improve test organization and maintainability. Major bugs fixed: - No major bugs reported/fixed in this period for SchweizerischeBundesbahnen/DAS based on the provided data. Overall impact and accomplishments: - Faster, more reliable iOS test runs with the ability to trigger tests on demand and a more efficient matrix, enabling quicker feedback and release readiness. - Improved test maintainability through cleaner integration test helpers, reducing future maintenance burden and risk. Technologies/skills demonstrated: - CI/CD optimization, BrowserStack, iOS testing, test automation, refactoring, test matrix strategies, and maintainability practices.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 – SchweizerischeBundesbahnen/DAS: Focused on strengthening CI/CD reliability for iOS BrowserStack testing and improving test maintainability. Key features delivered: - iOS BrowserStack CI/CD pipeline enhancements: added manual triggering and optimized the test matrix to accelerate and balance coverage. Related commit: 575ada4cccb53ca1f0f9933e47253372b7240e17 (chore: ios browserstack improvements (#852)). - Refactored the integration-test helper for dismissing modal sheets to improve test organization and maintainability. Major bugs fixed: - No major bugs reported/fixed in this period for SchweizerischeBundesbahnen/DAS based on the provided data. Overall impact and accomplishments: - Faster, more reliable iOS test runs with the ability to trigger tests on demand and a more efficient matrix, enabling quicker feedback and release readiness. - Improved test maintainability through cleaner integration test helpers, reducing future maintenance burden and risk. Technologies/skills demonstrated: - CI/CD optimization, BrowserStack, iOS testing, test automation, refactoring, test matrix strategies, and maintainability practices.
April 2025
11 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for SchweizerischeBundesbahnen/DAS: Delivered customer-facing Train Journey improvements, added graduated speed data, and strengthened CI/testing infrastructure to improve release reliability and speed. Focused on business value and technical quality with cross-platform readiness and performance gains.
11 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for SchweizerischeBundesbahnen/DAS: Delivered customer-facing Train Journey improvements, added graduated speed data, and strengthened CI/testing infrastructure to improve release reliability and speed. Focused on business value and technical quality with cross-platform readiness and performance gains.
April 2025
March 2025
11 Commits • 5 Features
Mar 1, 2025March 2025 (2025-03) delivery for SchweizerischeBundesbahnen/DAS focused on user experience improvements, real-time journey awareness, and CI reliability. Key features shipped include Maneuver Mode with UI controls and state management; Koa Notification with audio/visual alerts and a departure process modal; RADN Footnotes support in train journey view with new data models and UI; Train Journey Header/UX improvements including header suppression during active journeys and refined extended menu; and audible alerts for Warnapp events. Major bug fixes addressed wardrobe of UI logic and build stability, including color handling and equality semantics in footnotes, plus CI/CD release workflow adjustments. These changes collectively reduce time-to-awareness, increase reliability of journey data presentation, and improve maintainability and release confidence across the DAS codebase.
March 2025
11 Commits • 5 Features
Mar 1, 2025March 2025 (2025-03) delivery for SchweizerischeBundesbahnen/DAS focused on user experience improvements, real-time journey awareness, and CI reliability. Key features shipped include Maneuver Mode with UI controls and state management; Koa Notification with audio/visual alerts and a departure process modal; RADN Footnotes support in train journey view with new data models and UI; Train Journey Header/UX improvements including header suppression during active journeys and refined extended menu; and audible alerts for Warnapp events. Major bug fixes addressed wardrobe of UI logic and build stability, including color handling and equality semantics in footnotes, plus CI/CD release workflow adjustments. These changes collectively reduce time-to-awareness, increase reliability of journey data presentation, and improve maintainability and release confidence across the DAS codebase.
February 2025
5 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for SchweizerischeBundesbahnen/DAS focused on delivering user-centric improvements, security enhancements, and environment parity to accelerate development and testing. The team combined UI polish, robust session controls, and configuration hygiene to drive reliability, usability, and business value across the passenger journey experience.
5 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for SchweizerischeBundesbahnen/DAS focused on delivering user-centric improvements, security enhancements, and environment parity to accelerate development and testing. The team combined UI polish, robust session controls, and configuration hygiene to drive reliability, usability, and business value across the passenger journey experience.
February 2025
January 2025
8 Commits • 3 Features
Jan 1, 2025January 2025 (2025-01) – SchweizerischeBundesbahnen/DAS Key features delivered: - Train journey visualization enhancements: Added trackside elements (whistles, balises, tram areas, level crossings), and improved data grouping and speed data accuracy for journey displays. Related commits include 27379a2..., 00f9a816..., a5852db8..., 04d10341... - SFERA resources reintroduction: Restored previously removed SFERA resources by adding configuration files and scripts to restore functionality. Commit: dba28010... - SFERA mapping fix: enum rename and logic adjustment to differentiate stations and halts, aligning with latest spec. Commit: b01331d0... - Dependency and testing infrastructure maintenance: Upgraded Flutter SDK across CI and dependencies; added mock date testing utilities to improve test reliability. Commits: d9e45ca4..., 7358ab5e... Major bugs fixed: - Fix: station speed parsing corrected. Commit: 00f9a816... - Fix: do not show BU count on expanded balises. Commit: a5852db8... - Fix: use nsp value for bracket station text. Commits: 04d10341... - SFERA mapping fix: rename stopping location to halt and adjust isStation behavior. Commit: b01331d0... Overall impact and accomplishments: - Significantly enhanced journey visualization accuracy and usability, enabling faster decision-making for passengers and operators. - Restored SFERA resources to maintain feature completeness and reliability. - Improved testing reliability and CI stability through dependency upgrades and mock date utilities, reducing flaky tests and accelerating delivery. Technologies/skills demonstrated: - Flutter SDK and dependency management, CI/CD improvements, data parsing accuracy, mapping logic alignment with evolving specifications, and resource/script management for feature sets.
January 2025
8 Commits • 3 Features
Jan 1, 2025January 2025 (2025-01) – SchweizerischeBundesbahnen/DAS Key features delivered: - Train journey visualization enhancements: Added trackside elements (whistles, balises, tram areas, level crossings), and improved data grouping and speed data accuracy for journey displays. Related commits include 27379a2..., 00f9a816..., a5852db8..., 04d10341... - SFERA resources reintroduction: Restored previously removed SFERA resources by adding configuration files and scripts to restore functionality. Commit: dba28010... - SFERA mapping fix: enum rename and logic adjustment to differentiate stations and halts, aligning with latest spec. Commit: b01331d0... - Dependency and testing infrastructure maintenance: Upgraded Flutter SDK across CI and dependencies; added mock date testing utilities to improve test reliability. Commits: d9e45ca4..., 7358ab5e... Major bugs fixed: - Fix: station speed parsing corrected. Commit: 00f9a816... - Fix: do not show BU count on expanded balises. Commit: a5852db8... - Fix: use nsp value for bracket station text. Commits: 04d10341... - SFERA mapping fix: rename stopping location to halt and adjust isStation behavior. Commit: b01331d0... Overall impact and accomplishments: - Significantly enhanced journey visualization accuracy and usability, enabling faster decision-making for passengers and operators. - Restored SFERA resources to maintain feature completeness and reliability. - Improved testing reliability and CI stability through dependency upgrades and mock date utilities, reducing flaky tests and accelerating delivery. Technologies/skills demonstrated: - Flutter SDK and dependency management, CI/CD improvements, data parsing accuracy, mapping logic alignment with evolving specifications, and resource/script management for feature sets.
December 2024
3 Commits • 2 Features
Dec 1, 2024December 2024: Delivered two core enhancements to the SchweizerischeBundesbahnen/DAS train journey table, focused on UI clarity, data quality, and speed calculation accuracy. Implementations included 9999-edge mock data for development and QA, dynamic speed display tied to break series and train characteristics, and a refactor to improve speed data handling. These changes improve scheduling visibility, user experience, and reduce QA cycle time, delivering measurable business value.
3 Commits • 2 Features
Dec 1, 2024December 2024: Delivered two core enhancements to the SchweizerischeBundesbahnen/DAS train journey table, focused on UI clarity, data quality, and speed calculation accuracy. Implementations included 9999-edge mock data for development and QA, dynamic speed display tied to break series and train characteristics, and a refactor to improve speed data handling. These changes improve scheduling visibility, user experience, and reduce QA cycle time, delivering measurable business value.
December 2024
November 2024
17 Commits • 3 Features
Nov 1, 2024November 2024 (Month: 2024-11) – Schweizerische Bundesbahnen / DAS Key features delivered: - Train Journey: search with date and transport provider; refined journey display (Betriebspunktabfolge); protection sections; speed restriction testing; role-based UI behavior on mobile. - iOS Platform UX: Landscape orientation and fullscreen mode enforced for consistent user experience. Major bugs fixed and stability improvements: - CI/Build Stability: updated dependencies to fix login issues and iOS build errors; nightly BrowserStack builds; minor version fixes and a structural refactor to improve stability. - Routine maintenance: updated SFERA XML configuration files to align settings. Overall impact and accomplishments: - Delivered end-to-end journey planning enhancements with improved usability and data fidelity; reduced deployment risk with CI/CD improvements; strengthened maintenance through config updates and test data. Technologies/skills demonstrated: - Web/mobile feature development (React/TS), mobile role-based UI, iOS orientation controls, CI/CD optimization, dependency management, XML/configuration governance, and test data/mock data generation.
November 2024
17 Commits • 3 Features
Nov 1, 2024November 2024 (Month: 2024-11) – Schweizerische Bundesbahnen / DAS Key features delivered: - Train Journey: search with date and transport provider; refined journey display (Betriebspunktabfolge); protection sections; speed restriction testing; role-based UI behavior on mobile. - iOS Platform UX: Landscape orientation and fullscreen mode enforced for consistent user experience. Major bugs fixed and stability improvements: - CI/Build Stability: updated dependencies to fix login issues and iOS build errors; nightly BrowserStack builds; minor version fixes and a structural refactor to improve stability. - Routine maintenance: updated SFERA XML configuration files to align settings. Overall impact and accomplishments: - Delivered end-to-end journey planning enhancements with improved usability and data fidelity; reduced deployment risk with CI/CD improvements; strengthened maintenance through config updates and test data. Technologies/skills demonstrated: - Web/mobile feature development (React/TS), mobile role-based UI, iOS orientation controls, CI/CD optimization, dependency management, XML/configuration governance, and test data/mock data generation.
October 2024
2 Commits • 2 Features
Oct 1, 2024Month: 2024-10 — SchweizerischeBundesbahnen/DAS focused on improving observability, code quality, and CI reliability. Delivered a comprehensive client logging service with local rollover and backend forwarding for centralized monitoring, and implemented code quality improvements with CI enhancements that reduce defect risk and improve maintainability. While no major bugs were reported this month, the changes reduce future defect surface and accelerate incident diagnosis.
2 Commits • 2 Features
Oct 1, 2024Month: 2024-10 — SchweizerischeBundesbahnen/DAS focused on improving observability, code quality, and CI reliability. Delivered a comprehensive client logging service with local rollover and backend forwarding for centralized monitoring, and implemented code quality improvements with CI enhancements that reduce defect risk and improve maintainability. While no major bugs were reported this month, the changes reduce future defect surface and accelerate incident diagnosis.
October 2024
Activity
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Quality Metrics
Correctness88.2%
Maintainability86.6%
Architecture83.6%
Performance80.0%
AI Usage24.8%
Skills & Technologies
Programming Languages
ArbDartFlutterGradleJavaJavaScriptKotlinMarkdownObjective-CPython
Technical Skills
API IntegrationAndroid DevelopmentAsset ManagementAsynchronous ProgrammingAudio ConfigurationAudio PlaybackAuthenticationAutomated TestingBackend DevelopmentBackend IntegrationBlocCI/CDCode OrganizationCode QualityConfiguration
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline