Adnan Vrevic developed and integrated daily travel analytics and expense capture features across both backend and frontend in the navikt/tilleggsstonader-sak repositories. He implemented support for daily travel DVH statistics and expense handling, extending data models and mapping logic using Kotlin and TypeScript. Adnan also improved test automation by refactoring date formatting in the backend test suite, enhancing readability and maintainability. On the frontend, he added expense capture functionality to the daily travel activity form with React, ensuring seamless data flow and UI consistency. His work enabled coordinated data and UI changes, supporting enhanced reporting and cost visibility for users.