Christian Krüger Email & Phone Number

Berlin, DE

Berlin, Germany

Berlin, Germany

Berlin, Germany

• Created and published a new entertainment Android app in Kotlin to give users the best experience when they need information about movies and TV shows. The app has reached more than 4 million downloads by proactively.
• Building modern user interfaces that have complex views by using Android Jetpack libraries.
• Continuously improving user retention and increasing revenue by integrating and using Firebase technologies and A/B testing.
• Following material design patterns by Google.
• Contributing parts of the app as open-source libraries.

Berlin, Deutschland

• Leading the Android and iOS engineers in architecting and building the fluege.de apps to search and book flights.
• Refactoring parts of the iOS app using SwiftUI, ViewModels, and reactive programming to be maintainable and testable.

• Developed a profile page to sign in and display user information by using remote APIs with Retrofit and Kotlin Coroutines.
• Reduced the data layer and business logic in Android and iOS by 50% by implementing and adopting Kotlin Multiplatform.
• Brought the iOS and Android development process closer together by educating and helping the iOS developers with Kotlin.
• Decreased the bug backlog by 30% by writing unit tests and following test-driven development.

• Built and released the fluege.de app from scratch with the team.
• Implemented the business logic and views of the flight search and booking process.
• Introduced a clean architecture by using modularization, dependency injection, and MVVM.

Berlin, Deutschland

• Agile software development of new functionalities in the Java client application LucaNet IDE.
• Maintenance, support, and testing of the existing software solution for consolidated financial statements.
• Creation and maintenance of the technical documentation of the software.

Berlin, Deutschland

• Interface development between a variety of ERP systems and the LucaNet Data Warehouse using Java and SQL.
• Quality assurance, documentation, and implementation of the interfaces at the customer's site.
• Conception and further development of Data Warehouse solutions as well as their integration into the LucaNet software.

Karlsruhe, Baden-Württemberg

• Conception and implementation of a Java client application for the generation of an e-balance sheet.
• Analysis, conception, and implementation of interfaces in PLSQL for the Oracle ERP system.

Google Certification Fast Track, Android Development

The scholarship includes enrollment for the Associate Android Developer Fast Track on Udacity.

Bachelor Of Science - Bs, Business Information Systems

Bachelor Of Arts - Ba, Business Information Systems

Higher Education Entrance Qualification

The main subjects are economics and business administration.