
Adrian Berg developed and maintained core features for the AtB-AS/mittatb-app and design-system repositories, focusing on user-facing flows such as Smart Park & Ride, onboarding, and booking. He engineered robust API integrations and event-driven data handling using TypeScript and React Native, improving reliability and responsiveness in vehicle registration, ride planning, and personalization features. Adrian addressed edge cases in error handling, accessibility, and localization, ensuring consistent UI/UX across devices and languages. His work included backend-for-frontend refactoring, device registry updates for iOS compatibility, and analytics integration, demonstrating depth in both frontend and backend development while supporting maintainable, scalable codebases.

February 2026 performance highlights for AtB-AS/mittatb-app: Delivered two key features that strengthen user engagement and hardware coverage. Implemented personalization program point event handling to improve bonus balance retrieval and support new personalization events, enabling richer rewards experiences. Added iOS device Daniel to the devices registry to broaden hardware compatibility and reduce user friction. These changes demonstrate solid event-driven design, backend/frontend integration for rewards, and careful device registry maintenance.
February 2026 performance highlights for AtB-AS/mittatb-app: Delivered two key features that strengthen user engagement and hardware coverage. Implemented personalization program point event handling to improve bonus balance retrieval and support new personalization events, enabling richer rewards experiences. Added iOS device Daniel to the devices registry to broaden hardware compatibility and reduce user friction. These changes demonstrate solid event-driven design, backend/frontend integration for rewards, and careful device registry maintenance.
January 2026 — Mittatb-app (AtB-AS/mittatb-app). Key accomplishments-focused month delivering targeted reliability improvements and performance enhancements in core booking flows. Key features delivered and bugs fixed: - ParkAndRide BottomSheet: Robust capacity handling. Fixed handling of undefined capacity by ensuring capacity is processed as a string, improving robustness and stability for ride planning UI. (Commit e56713c7f9d88c4f93bdb7eb0bc0d4f301bf29d1, Fix: handle undefined capacity in ParkAndRideBottomSheet (#5675)) - Shmo Booking Stream: Event handling and performance improvements. Implemented handling for booking stream events, updated event types and query handling, with refactoring for language handling and dynamic refetch intervals to boost responsiveness and data freshness. (Commit 8bbe2ca73a42b128bea537387f3b008bc07ab0ab, Feat: add shmo booking stream event handling (#5592)) Overall impact and accomplishments: - Increased reliability of core ride-planning UI through robust capacity handling. - Improved booking data freshness and performance via event-driven handling and dynamic refetching. - Clearer event typing and language handling support enabling easier internationalization and future improvements. Technologies/skills demonstrated: - Bug fixation and defensive programming for UI components. - Feature development in event-driven streams with performance tuning. - Refactoring for localization support and dynamic data fetching strategies.
January 2026 — Mittatb-app (AtB-AS/mittatb-app). Key accomplishments-focused month delivering targeted reliability improvements and performance enhancements in core booking flows. Key features delivered and bugs fixed: - ParkAndRide BottomSheet: Robust capacity handling. Fixed handling of undefined capacity by ensuring capacity is processed as a string, improving robustness and stability for ride planning UI. (Commit e56713c7f9d88c4f93bdb7eb0bc0d4f301bf29d1, Fix: handle undefined capacity in ParkAndRideBottomSheet (#5675)) - Shmo Booking Stream: Event handling and performance improvements. Implemented handling for booking stream events, updated event types and query handling, with refactoring for language handling and dynamic refetch intervals to boost responsiveness and data freshness. (Commit 8bbe2ca73a42b128bea537387f3b008bc07ab0ab, Feat: add shmo booking stream event handling (#5592)) Overall impact and accomplishments: - Increased reliability of core ride-planning UI through robust capacity handling. - Improved booking data freshness and performance via event-driven handling and dynamic refetching. - Clearer event typing and language handling support enabling easier internationalization and future improvements. Technologies/skills demonstrated: - Bug fixation and defensive programming for UI components. - Feature development in event-driven streams with performance tuning. - Refactoring for localization support and dynamic data fetching strategies.
November 2025 monthly summary for AtB-AS/mittatb-app: Delivered notable features with improved onboarding, UI cohesion across Dashboard/Profile, and robust mutation error handling. Enhanced user feedback through success toasts for vehicle CRUD, refined translations, and accessibility-conscious UI elements. These changes collectively improved onboarding conversion, user satisfaction, and developer experience, while strengthening multi-language support and type-safe error handling.
November 2025 monthly summary for AtB-AS/mittatb-app: Delivered notable features with improved onboarding, UI cohesion across Dashboard/Profile, and robust mutation error handling. Enhanced user feedback through success toasts for vehicle CRUD, refined translations, and accessibility-conscious UI elements. These changes collectively improved onboarding conversion, user satisfaction, and developer experience, while strengthening multi-language support and type-safe error handling.
October 2025 monthly summary for AtB-AS/mittatb-app (2025-10): Key features delivered include device data updates for iOS device compatibility, API error handling improvements, UI/terminology refresh for Park & Ride, and UI header/layout consistency. Major bugs fixed encompass the device entry fix for Adrian and the consolidation of error handling with standardized cancellation/error parsing. Overall impact: increased reliability and maintainability, improved onboarding and user experience through consistent terminology and UI, and faster debugging via standardized error models. Technologies and skills demonstrated include React Native UI refinements, TypeScript typing for error handling (RequestError), Axios-based API robustness, data file maintenance (ios-devices.txt), and theming-driven UI consistency. Key deliverables and commits noted in the month include: 54a42235d415328c0a4390d92f29b8fc9d5c07bc; a7fe6b3ae8f076c0f8219b54251c5740c07f7751; a200c6dbc0a53c1639147bb2b9d658f6e9ed3238; a89b3d1c80067c1c8948139748bf4f52f1d44d9e; c964bdb0059d9ec92e48bbbb0c95f941fb366aed.
October 2025 monthly summary for AtB-AS/mittatb-app (2025-10): Key features delivered include device data updates for iOS device compatibility, API error handling improvements, UI/terminology refresh for Park & Ride, and UI header/layout consistency. Major bugs fixed encompass the device entry fix for Adrian and the consolidation of error handling with standardized cancellation/error parsing. Overall impact: increased reliability and maintainability, improved onboarding and user experience through consistent terminology and UI, and faster debugging via standardized error models. Technologies and skills demonstrated include React Native UI refinements, TypeScript typing for error handling (RequestError), Axios-based API robustness, data file maintenance (ios-devices.txt), and theming-driven UI consistency. Key deliverables and commits noted in the month include: 54a42235d415328c0a4390d92f29b8fc9d5c07bc; a7fe6b3ae8f076c0f8219b54251c5740c07f7751; a200c6dbc0a53c1639147bb2b9d658f6e9ed3238; a89b3d1c80067c1c8948139748bf4f52f1d44d9e; c964bdb0059d9ec92e48bbbb0c95f941fb366aed.
September 2025 monthly summary: Delivered a robust Smart Park & Ride upgrade and broader UX improvements, improved data freshness through caching and environment configuration, and expanded design-system visuals. Key outcomes include enhanced error handling for vehicle registration/editing, a refreshed vehicle list with a dedicated refresh control, analytics integration with well-named PostHog events, and new SP&R illustrations across themes. Also fixed explicit-null handling for nickname data and aligned iOS device configurations for testing. Together, these changes reduce user friction, improve data accuracy, strengthen analytics visibility, and support faster onboarding across platforms.
September 2025 monthly summary: Delivered a robust Smart Park & Ride upgrade and broader UX improvements, improved data freshness through caching and environment configuration, and expanded design-system visuals. Key outcomes include enhanced error handling for vehicle registration/editing, a refreshed vehicle list with a dedicated refresh control, analytics integration with well-named PostHog events, and new SP&R illustrations across themes. Also fixed explicit-null handling for nickname data and aligned iOS device configurations for testing. Together, these changes reduce user friction, improve data accuracy, strengthen analytics visibility, and support faster onboarding across platforms.
Month: 2025-08. Summary of work for AtB-AS/mittatb-app focused on delivering UI polish, accessibility improvements, and authentication flow refinements for the SmartParkAndRide experience. Changes were implemented with clear commit traceability and are aimed at increasing usability, reducing friction for returning users, and aligning with design standards across the app.
Month: 2025-08. Summary of work for AtB-AS/mittatb-app focused on delivering UI polish, accessibility improvements, and authentication flow refinements for the SmartParkAndRide experience. Changes were implemented with clear commit traceability and are aimed at increasing usability, reducing friction for returning users, and aligning with design standards across the app.
July 2025 monthly summary highlighting delivery of Smart Park and Ride capabilities, onboarding improvements, and log noise reduction. Focused on business value, concrete deliverables, and measurable impact across vehicle registrations, data availability, and user onboarding.
July 2025 monthly summary highlighting delivery of Smart Park and Ride capabilities, onboarding improvements, and log noise reduction. Focused on business value, concrete deliverables, and measurable impact across vehicle registrations, data availability, and user onboarding.
June 2025 monthly summary: Focused on stabilizing backend communication and delivering the Smart Park & Ride (SPAR) feature with strong UI and API integration across two repos. Key outcomes include correcting BFF URL configuration in planner-web, enabling reliable backend interaction; a complete SPAR rollout in mittatb-app with a dedicated vehicle registration workflow (add/list/edit), feature toggle, and UI navigation; and groundwork for maintainability with endpoint refactors, Storybook improvements, and accessibility/localization enhancements. These efforts deliver improved user onboarding to SPAR, reduce backend misconfigurations, and set the stage for scalable, localized experiences.
June 2025 monthly summary: Focused on stabilizing backend communication and delivering the Smart Park & Ride (SPAR) feature with strong UI and API integration across two repos. Key outcomes include correcting BFF URL configuration in planner-web, enabling reliable backend interaction; a complete SPAR rollout in mittatb-app with a dedicated vehicle registration workflow (add/list/edit), feature toggle, and UI navigation; and groundwork for maintainability with endpoint refactors, Storybook improvements, and accessibility/localization enhancements. These efforts deliver improved user onboarding to SPAR, reduce backend misconfigurations, and set the stage for scalable, localized experiences.
May 2025 highlights focused on delivering business value through feature migrations, reliability improvements, and UX enhancements across mittatb-app and planner-web. Key deliverables include migrating to the new Sales Service with API alignment; enhanced error handling for NO_AVAILABLE_OFFERS_DUE_TO_SCHEDULE; ExpiryMessage component for payment cards to improve reliability; and internal iOS device configuration for development/testing. In planner-web, improvements to Trip Location Search, centralized geocoding via a new BFF service, and improved Trip Patterns loading UX with resilient loading states, reduced revalidations, and load-more support. Major bug fixed to correctly detect schedule-based offer unavailability. Overall impact: increased offer availability, reduced checkout friction, smoother trip planning, and faster, more reliable data flow. Technologies/skills demonstrated include API refactoring and integration, frontend architecture improvements, robust error handling, component design, React SWR/immutable data patterns, geocoding centralization, BFF-based services, and performance optimization.
May 2025 highlights focused on delivering business value through feature migrations, reliability improvements, and UX enhancements across mittatb-app and planner-web. Key deliverables include migrating to the new Sales Service with API alignment; enhanced error handling for NO_AVAILABLE_OFFERS_DUE_TO_SCHEDULE; ExpiryMessage component for payment cards to improve reliability; and internal iOS device configuration for development/testing. In planner-web, improvements to Trip Location Search, centralized geocoding via a new BFF service, and improved Trip Patterns loading UX with resilient loading states, reduced revalidations, and load-more support. Major bug fixed to correctly detect schedule-based offer unavailability. Overall impact: increased offer availability, reduced checkout friction, smoother trip planning, and faster, more reliable data flow. Technologies/skills demonstrated include API refactoring and integration, frontend architecture improvements, robust error handling, component design, React SWR/immutable data patterns, geocoding centralization, BFF-based services, and performance optimization.
April 2025 monthly summary focusing on delivering reliability improvements in the mittatb-app and improving data consistency for refunds. This period saw targeted fixes and clarifications to accelerate development and reduce onboarding friction. Key outcomes include stability improvements in iOS pod installation workflow, standardized refund option flags across API/UI, and documentation enhancements that support faster setup and fewer human errors. Technologies leveraged included Ruby tooling, iOS dev flow, and API UI integration patterns, reinforcing business value through smoother deployments and consistent user experiences.
April 2025 monthly summary focusing on delivering reliability improvements in the mittatb-app and improving data consistency for refunds. This period saw targeted fixes and clarifications to accelerate development and reduce onboarding friction. Key outcomes include stability improvements in iOS pod installation workflow, standardized refund option flags across API/UI, and documentation enhancements that support faster setup and fewer human errors. Technologies leveraged included Ruby tooling, iOS dev flow, and API UI integration patterns, reinforcing business value through smoother deployments and consistent user experiences.
January 2025 monthly summary: Delivered a targeted CORS fix for the reverse endpoint in AtB-AS/planner-web to expand the allowed origins, enabling external services to reliably interact with the Planner Web API. This change supports partner integrations while maintaining origin-based access controls with minimal surface area.
January 2025 monthly summary: Delivered a targeted CORS fix for the reverse endpoint in AtB-AS/planner-web to expand the allowed origins, enabling external services to reliably interact with the Planner Web API. This change supports partner integrations while maintaining origin-based access controls with minimal surface area.
December 2024: Delivered a focused UI polish for the Aztec barcode component in mittatb-app to improve visual presentation and layout stability across screen sizes. No major bugs fixed this month. Impact: improved user experience during barcode rendering, reduced layout edge cases across devices, and a more consistent design aligned with the current UI tokens. Technologies/skills demonstrated: React Native UI styling, component composition, responsive design, and code quality improvements aligned with design guidelines. Business value: smoother barcode display reduces user confusion and supports faster workflows in scanning contexts.
December 2024: Delivered a focused UI polish for the Aztec barcode component in mittatb-app to improve visual presentation and layout stability across screen sizes. No major bugs fixed this month. Impact: improved user experience during barcode rendering, reduced layout edge cases across devices, and a more consistent design aligned with the current UI tokens. Technologies/skills demonstrated: React Native UI styling, component composition, responsive design, and code quality improvements aligned with design guidelines. Business value: smoother barcode display reduces user confusion and supports faster workflows in scanning contexts.
November 2024 (2024-11) monthly summary for AtB-AS/design-system. Focused on visual polish for Svipper and release packaging improvements to streamline deployment and consistency across themes.
November 2024 (2024-11) monthly summary for AtB-AS/design-system. Focused on visual polish for Svipper and release packaging improvements to streamline deployment and consistency across themes.
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