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Android Freelancer

Ich bin Johannes, ein freiberuflicher Senior Android Entwickler. Ich habe mich auf die native Android-Entwicklung mit Kotlin spezialisiert und biete auch plattformübergreifende Entwicklung mit Flutter für Android, iOS und Web an.

  • Name:Johannes Lauber
  • Jobtitel:Android Entwickler
  • Ort:Stuttgart
  • Coden seit:2001
  • Android seit:2013
  • Freelancer seit:2015

Skills

Ich lege großen Wert auf sauberen und gut strukturiertem Code und auf gründliches Testen, um dessen Qualität sicherzustellen. Meine Expertise umfasst unter anderem Android, Kotlin, Flutter, Coroutines, Jetpack Compose, RxJava, Dagger/Hilt, Koin, Epoxy, Room, Google Pay, BLE, Firebase (Firestore, Auth, ML), Stacked, Google Maps und MapBox.

Freelancing

Hier sind ein paar nennenswerte Projekte an denen ich gearbeitet habe:

First Responder

Rescuetrack - 2023-2024 (3 months)

Converting first responder app from MVP to Jetpack Compose and creating and implementing a new UI for the app.

  • Kotlin
  • Jetpack Compose
  • Coroutines / Flow

Motel One

Accenture - 2021, 2022, 2023 (1 year 11 months)

Implementing and improving the hotel booking app from Motel One. I have already been commissioned 3 times.

  • Kotlin
  • Jetpack Compose
  • Epoxy
  • Coroutines

Ebay Kleinanzeigen

Adevinta - 2022 (9 months)

Implementing tasks for the Privacy and Trust and Safety team and converting legacy code to Jetpack Compose.

  • Kotlin
  • Coroutines
  • Jetpack Compose
  • RxJava

AI Studio

Bosch Sensortec - 2021-2023 (2 years)

Implementing a flutter app for Android and iOS which detects gases using AI.

  • Flutter
  • BLE
  • Auto Route
  • Stacked
  • Get It

ADAC Medical App

Sinner Schrader - 2021 (3 months)

Implementing a remote health doctor app for ADAC including video call features.

  • Kotlin
  • Dagger
  • Epoxy
  • RxJava

Mobility Stuttgart

Mobimeo - 2021 (3 months)

Implementing tasks like 3D secure for the Payment team in a mobility app.

  • Kotlin
  • Dagger
  • Google Pay
  • RxJava

BRITA Conenct

BRITA GmbH - 2020-2021 (6 months)

Implementing a BLE app to measure the water usage of jugs. And notify users, when the filter needs to be changed.

  • Kotlin
  • Room
  • Hilt
  • BLE

AIVITEX

AIVITEX GmbH - 2020 (5 months)

Implementing a video call app with AI features using Firebase ML Vision.

  • Kotlin
  • Firestore
  • Firebase Auth
  • ML Vision

Reach Now

Reach Now - 2018-2020 (1 year 4 months)

Implementing Google Pay with Braintree payment provider and an UI-Components library.

  • Kotlin
  • Braintree
  • Google Pay

Moovel Ondemand

Moovel - 2016-2018 (2 years)

Implementing a driver app, for an on demand shuttle service. Navigation and on- and off-boarding off passengers.

  • Kotlin
  • RxJava
  • Kodein
  • MapBox

EnBW Smart Home App

EnBW AG - 2015-2016 (5 months)

Implementing an app, which controls smart heating systems for offices using AI.

  • Java
  • Orm Lite
  • Azure

7TV Mediathek

ProSiebenSat.1 - 2015 (3 months)

Implementing tracking and analytics libraries for a video streaming app and refactoring.

  • Java
  • Retrofit
  • Eventbus

Falk Outdoor

United Navigations - 2015 (7 months)

Implementing an outdoor navigation app for hiking, biking and other outdoor activities.

  • Java
  • Eventbus

Eigene Projekte

Deutsch A1, A2 Vokabeltrainer

Mit dieser App können Nutzer den Wortschatz für die Deutschprüfungen A1 und A2 lernen. Die App wurde in Flutter entwickelt.

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+49 176 32297056

Tübingerstraße 69

70178 Stuttgart