Freelancer profile translated to English.
Back to original languageAbout Jörg
Android Native
I develop modern, native Android apps with 100% Kotlin and Jetpack Compose. With so-called Clean Architecture, I develop apps that are easy to scale and test.
Responsive Design
My apps are optimized for all common device classes such as smartphones, tablets, desktops, and foldables, as well as for portrait and landscape configurations.
Offline First
Apps should also function independently of an internet connection, as long as it is a feature. New data is always stored locally first and only synchronized with a restored internet connection.
Kotlin Multiplatform (KMP)
With JetBrains' Kotlin Multiplatform (KMP) technology, I develop a common code base for Android, iOS, and Desktop while retaining the advantages of native development.
With Compose Multiplatform, I also develop a common code base for the user interface. This saves costs and resources and enables faster deployment.
German
Native or bilingual
English
Fluent
Can work on-site
Hamburg (up to 50km)
Experience
- Gebr. Heinemann SE & Co. KGSenior Consultant POS SolutionsOctober 2021 - October 2025 (4 years)Hamburg, Germany
- IT Consultant for all topics related to the Point-Of-Sale
- Further development of checkout software / System & Solution Design, System Integration
- Project Management
- 3rd Level Support for the Point-Of-Sale
- POS Hardware Integration
- JV Coding Solutions e.K.Mobile App Developer FreelancerSOFTWARE PUBLISHINGNovember 2025 - Today (9 months)Hamburg, Germany- Scalable, native Android development with the latest tech stack, including Jetpack Compose, Coroutines, Ktor, Room, Koin DI, Coil- Responsive Design, optimization for phones, tablets, foldables, and desktops- Implementation of Material 3 Expressive- Custom Designs- Kotlin Multiplatform Apps for Android, iOS, and Desktop
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Certifications
- DROP TABLE MENTORINGPL Coding GmbH2025