SchweizerischeBundesbahnen/DAS
Oct 2024 – Oct 2025
13 Months active
Languages Used
DartSwiftYAMLJavaJavaScriptPythonSQLSVG
Technical Skills
Backend IntegrationCI/CDCode QualityDartDependency InjectionFile Management
Thomas
PROFILE
Thomas
Thomas Bomatter developed and enhanced the SchweizerischeBundesbahnen/DAS application over 13 months, delivering features that improved train journey visualization, data accuracy, and system reliability. He implemented advanced UI components, real-time connectivity indicators, and robust logging with Splunk integration, using Dart and Flutter to ensure cross-platform consistency. His work included migrating local storage to Drift, introducing feature flags, and refining authentication with OAuth profiles for MQTT. By focusing on maintainable architecture, automated testing, and CI/CD optimization, Thomas addressed both user experience and backend stability. His engineering approach balanced new feature delivery with code quality, observability, and long-term maintainability.
Overall Statistics
Feature vs Bugs
76%Features
Repository Contributions
97Total
Bugs
13
Commits
97
Features
42
Lines of code
75,183
Activity Months13
Your Network
35 people
Work History
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
Correctness87.8%
Maintainability87.2%
Architecture83.0%
Performance79.2%
AI Usage22.4%
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