Senior Android Engineer

4/2021 – 2/2024

Hybrid Shopping App
>5.000.000 User
>4,5 Rating

Main Tasks
 - Drive bigger architecture refactoring’s and developer experience
 - Responsibility for und further development of tech roadmap together with the team
 - Build up Android platform team
 - Moderation of Android platform meetings
 - Planning and consultation with feature development teams
 - Recruiting interviews (general & technical interviews)

Projects
 - Automation of development best practices & rules
    - Mainly via detect & lint
    - Reduction of developer errors for certain architecture and reactive patterns
    - Made refactoring needs more transparent
    - Responsibility for planning & partially execution
 - Refactoring of integration test setup 
    - Refactoring of complete test setup from espresso to kaspresso with additional layer to
      reduce flaky test count
    - Decreased test CI runtimes from 45min to 15 min
    - Result: Minimized flakiness & improvement of success rate from 60% to 99%
- Implementation of new OAuth authentication via PKCE flow
    - Responsibility for planning & most of the execution

Technologies
 - Android:
    - Architecture: MVVM
    - Dagger2, RxJava2, Glide, Kotlin, MockK, Robolectric, Espresso, Retrofit, OkHttp,   
      Moshi, Jetpack Compose, Coroutines, Kaspresso, JUnit, detekt, lint, Koin
 - Other:
    - CircleCI, AWS (Lambda, EC2, Docker, DynamoDB, CloudFormation, S3, CloudWatch),   
      Elastic

Android, Kanban (Softwareentwicklung), SCRUM, Software Architektur / Modellierung, Android Entwicklung, Java (allg.), Kotlin, Mobile Entwicklung (allg.), System Architektur

1/2020 – 4/2021

Hybrid Shopping App
-Hyperlink entfernt-
>5.000.000 User
>4,5 Rating

Main Tasks
- Mostly working on technical and architecture topics inside a feature team
- Support of other feature teams for feature concepts
- Work on technical roadmap and backlog
- Mentoring
- Recruiting Interviews (general & technical interviews)

Projects
- Build new native shop start page from scratch
- Different tile types based on JSON configuration provided by backend
- Partial responsibility for planning & execution
- Increased customer engagement with new start page
- Dagger 1 to Dagger 2 Migration including integration test setup
- Completely responsible for planning & execution

Technologies
- Android:
- Architecture: MVVM
- Dagger2, RxJava2, Glide, Kotlin, MockK, Robolectric, Espresso, Retrofit, OkHttp,
Moshi, Kaspresso, JUnit, detekt, lint, Koin
- Other:
- CircleCI, AWS (Lambda, EC2, Docker, DynamoDB, CloudFormation, S3, CloudWatch),
Elastic

Software Architektur / Modellierung, Java (allg.), Kotlin, Android, Android Entwicklung, Kanban (Softwareentwicklung), SCRUM

11/2018 – 1/2020

Mobility Platform App, whitelabel, Multiple mobility service providers per customer
-Hyperlink entfernt- (Reach NOW app discontinued)
>500.000 User

Main Tasks
- Developer in the mobility framework team (platform team)
- Responsible for complete app architecture that is not specific to a mobility service
- Support other teams in integrating major features (e.g. in search or user account)
- Responsibility for release process
- Improve release process automation with fastlane

Projects
- Rebuild complete app navigation (NavigationDrawer → BottomNavigation)
- Implementation of new deeplink architecture
- Rebuild authentication with OAuth2.0
- Build Android instrumentation test setup with Firebase Test Lab

Technologies
- Android:
- Architectures: MVP, MVVM
- Dagger2, RxJava2, RxBindings, Picasso, Kotlin / Java, AndroidX, MapBox, Mockito,
Robolectric, Espresso, Firebase Realtime Database, Retrofit2, Room, PhraseApp,
NewRelic
- Other:
- TeamCity (CI), AWS EC2, fastlane

Android, Software Architektur / Modellierung, Android Entwicklung, Java (allg.), Kotlin