Nikola Samardzija

Multi-modular app with MVVM architecture Kotlin, Coroutines, Koin DI, Jetpack Navigation, Paging3, CameraX Integration of Bluetooth LE with a car (Invers Cloudboxx) that is used on over 3000 Volskwagen cars Unlocking and locking car based on encrypted token that has time validity Different logic flows based on car charge, range, fuel level and if charger is connected Offline mode with encryption for most important features and using BLE as a fallback to communicate with car Migration of the app to GraphQL from REST API (Retrofit) Integration with Salesforce push notifications and universal links Setup, usage and management of flags for A/B testing based on GA4 Migration to Auth0 Implemented a structured weekly release process to improve delivery consistency Improved stability from 95% to 99%+ crash free users for over 60 thousand active users Strong Scrum practice with Scrum Master and Product Owner in the team High independence of dev team in daily work with daily refinements and bi-weekly sprint reviews to collaborate with stakeholders Azure DevOps CI/CD and code review practice with iOS and Android developer Integrated CMS capabilities using Hygraph within the mobile app. Collaborated with QA to implement Espresso UI tests using UI Automator. JUnit and Mockito for unit testing Built admin panel for our domain with AppSmith - open-source low-code platform

Led adoption and research of Kotlin Multiplatform (KMP) Used Kotlin, Coroutines, Jetpack Compose Optimised loading of photos from gallery Implementation of In-app subscription with Revenue Cat Led idea definition, conducted market research, and managed the discovery phase.

Developed Android app with focus on UI and animations Used Kotlin, Jetpack Compose Successfully led the project from tender application to launch, ensuring full compliance with EU regulations and tender specifications. Managed development of web-based monitoring app in PHP and Angular and aligned it with user needs by facilitating multiple interviews