Matthias Eymers

Lead Android Developer

Avatar placeholder
Seevetal, Germany

Experience

Apr 2025 - Present
10 months
Hamburg, Germany

Lead Android Developer

Star Finanz-Software Entwicklung und Vertriebs GmbH

  • Continued development of the Android app "StarMoney"
  • Major XML to Compose redesigns
  • Introduction of new technologies and architecture
  • Implementation of real-time transfers
  • Development using agile Scrum methodology
Dec 2024 - Apr 2025
5 months
Hamburg, Germany

Lead Flutter Developer

P3 People Play Padel GmbH

  • New development of the mobile apps "P3 Club League" for Android and iOS using Flutter
  • Designing features, UX, and UI
  • Using Firebase Auth, Storage, and Realtime Database
Nov 2024 - Mar 2025
5 months

Senior Android Developer

JAKALA Germany GmbH

  • Continued development of the Android apps "hvv switch" and "SRF Meteo"
  • Major XML to Compose redesigns
  • Feature development for e-mobility and ticketing
  • Development using agile Scrum methodology
Sep 2023 - Oct 2024
1 year 2 months

Senior Android Developer

Deutsche Bahn AG

  • Continued development of the Android app "RiM - Rail in Motion"
  • Code refactorings
  • Technical evaluation and documentation
  • Development using agile Scrum methodology
Jan 2023 - Apr 2025
2 years 4 months

Lead Flutter Developer

Elbjungs Software GmbH & Co. KG

  • New development of the mobile apps "Jobtura Zeiterfassung" and "Jobtura Warehouse" for Android and iOS using Flutter
  • Designing features, UX, and UI
Jan 2023 - Apr 2024
1 year 4 months

Lead Android and Flutter Developer

reflect.media GmbH

  • Further development of the "Stadtradeln" mobile app for Android
  • New development of the "Stadtradeln" mobile app for Android and iOS using Flutter
  • Designing features, UX, and UI
Sep 2022 - Sep 2023
1 year 1 month

Senior Android Developer

JAKALA Germany GmbH

  • Further development of the Android apps "hvv switch" and "SRF Meteo"
  • Code refactorings
  • Extending tracking
  • Development following agile Scrum methodology
Jun 2022 - Aug 2022
3 months

Lead Android Developer

culture4life GmbH

  • New development of the Android app "luca link"
  • Implementing new architecture
  • Build, release, and deployment processes
  • Development following agile Kanban methodology
Oct 2021 - Apr 2022
7 months

Senior Android Developer

FitX Deutschland GmbH

  • Further development of the Android app "FitX - Fitness App"
  • Major refactorings
  • Build, release, and deployment processes
  • Bug fixing and testing
  • Development following agile Scrum methodology
Nov 2019 - Sep 2021
1 year 11 months
Hamburg, Germany

Android Developer

Die Techniker Krankenkasse

  • Further development of the Android app "TK-App"
  • Integration and maintenance of the "TK-Safe" and "TK-Fit" modules
  • Build, release, and deployment processes on the Google Play Store with over 1 million Android users
  • Supporting apprentices
  • OWASP security standards
  • Development following agile Scrum methodology
Jan 2018 - Oct 2019
1 year 10 months
Hamburg, Germany

Android Developer

Haspa Next GmbH

  • New and further development of the Android app "AINO-Heute in Hamburg"
  • Build, release, and deployment processes in the Google Play Store
  • Bug fixing and testing
  • Development following agile Kanban methodology
Apr 2017 - Oct 2017
7 months
Hamburg, Germany

Software Developer C# .NET

Plansysteme GmbH

  • New and further development of 3D applications and mass installation tools
  • Universal Windows Platform development
  • Development of RESTful APIs based on ASP .NET Core
  • Support and technical implementation of international HoloLens projects
Aug 2016 - Apr 2017
9 months

Software Developer C# .NET

Elbjungs Software GmbH & Co. KG

  • New and further development of the inventory management system "Jobtura - Sales & Rent"
  • New development of Jobtura Care & Jobtura Kita to manage support services
Jun 2015 - Present
10 years 8 months
Hamburg, Germany
Hybrid

Senior Mobile App Developer

Freelancer

  • New and further development of native Android and hybrid apps for iOS and Android with Flutter
Aug 2013 - Jul 2016
3 years
Hamburg, Germany

IT Specialist Apprentice – System Integration

sambus GmbH

  • First Level Support
  • Second Level Support
  • System administration
  • Server maintenance
  • WordPress web development

Summary

Remote and independent, with a strong focus on quality and a sustainable codebase.

I am a freelance Senior Mobile Developer with 10 years of experience in developing native Android apps (Kotlin/Java) and hybrid solutions with Flutter.

My focus areas are Clean Architecture, modern UI with Jetpack Compose, scalable app structures, and integrating complex backend systems.

Skills

  • Android
  • Kotlin
  • Java
  • Flutter
  • Flutterflow
  • Dart
  • C# .Net / .Net Core
  • Clean Architecture
  • Mvvm / Mvp
  • Coroutines / Rxjava
  • Okhttp / Retrofit
  • Dagger Hilt / Koin
  • Jetpack Compose
  • Jetpack Navigation
  • Jetpack Paging
  • Jetpack Room
  • Viewbinding / Databinding
  • Jenkins
  • Ci / Cd
  • Gradle
  • Junit
  • Mockk / Mockito
  • Turbine
  • Espresso
  • Robolectric
  • Android Studio
  • Visual Studio / Code
  • Git / Github / Gitlab / Bitbucket
  • Kanban / Scrum
  • Jira / Confluence
  • Firebase Crashlytics / Remote Config / A/b Testing
  • Exoplayer
  • Coil / Glide / Picasso
  • Lottie Animation
  • Google Maps

Languages

German
Native
English
Advanced

Education

Aug 2013 - Jul 2016

State Vocational School (G18)

IT Specialist – System Integration · IT Specialist – System Integration · Hamburg, Germany

Aug 2006 - Jul 2009

Commercial School with Harburg Business High School

Secondary school certificate · Hamburg, Germany

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