Android

In 2012 I have started development for Android during my Bachelor studies by creating first proof-of-concepts. Some of them evolved into full-fledged projects and one of them is still running more than ten years later.

Kotlin JVM, Java
Jetpack Compose, XML
Android Architecture Components
Coroutines, Flows
Gradle, Kotlin DSL, Groovy, Library Development
Firebase, Parse Server
Retrofit, OkHttp
Room, ObjectBox, OrmLite
Hilt, Koin
Espresso, mockK
NFC, Bluetooth

Kotlin Multiplatform

In 2022 I have started development with Kotlin Multiplatform and am currently migrating my largest app from native Android to other platforms.

Kotlin Native
Compose Multiplatform
Material3
SQLDelight
Ktor, Coroutines
Koin
kotlin.test

iOS

In 2014 I have started development for iOS by working as a working student for a company which was developing an iOS client. Since then I have been working on numerous native apps.

Swift, Objective-C
SwiftUI, UIKit
Combine, RxSwift
Firebase, Parse Server
Core Data
NFC, Bluetooth

Flutter

I have dived into Flutter many times, implemented small projects and helped maintaining legacy projects.

Dart
Material Components
Internationalization
Firebase
Hive, jaguar_orm
Resolver

Quality Assurance

I have experience in maintaining projects until they enter middle school and evolve, while neither rusting undetected nor crumbling to dust.

MVVM, MVI, MVC
Dependency Injection
Unit-, Instrumentation- and UI Testing
Continuous Integration, -Deployment and -Delivery
GitHub Actions, GitLab CI/CD
Code Reviews on Pull Requests
Clean Code

Agile Development

I have worked in a wide variety of environments, from stand-alone to fully-fledged SCRUM teams, communicating with customers or other interface providers.

SCRUM, Kanban and everything in-between
Requirements engineering
JIRA, Confluence