Profilbild von Daniel Weidensdoerfer Freelance Android Engineer aus Dresden

Daniel Weidensdörfer

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Letztes Update: 22.09.2023

Freelance Android Engineer

Abschluss: nicht angegeben
Stunden-/Tagessatz: anzeigen
Sprachkenntnisse: deutsch (Muttersprache) | englisch (verhandlungssicher) | russisch (Grundkenntnisse) | ukrainisch (Grundkenntnisse)

Dateianlagen

resume.pdf

Skills

Languages
Kotlin, Java

Methodologies/Roles
Scrum, SAFe, Release Management, Code Reviews

Frameworks
Admob-/Firebase, SDK, Samsung Accessory SDK, Billing Library 4, Gson

Architecture
RxJava, Dagger, Hilt, WorkManager, Coroutines, DataStore, Room, Flows, LiveData, ViewModel

UI
Jetpack Compose, Views, Data Binding, Binding Adapters, Material Components

Tests
JUnit, (BDD) Mockito, Espresso, Compose Tests, Unit Tests, Truth,
UI/Instrumentation Tests

Software
Android Studio, Git, GitHub, BitBucket, Jenkins, Jira

Other Tools
Figma, Zeplin, Play-/Firebase Console, Optimizely, Swagger

Projekthistorie

07/2022 - 11/2022
Whitelabel Design System
Leading Automotive Manufacturer (Automobil und Fahrzeugbau, 500-1000 Mitarbeiter)

Development of a white label design system including consulting services to enable the integration of standalone features in differently branded applications. The Kotlin API is developed using Jetpack ComposeCode reviews ensure utmost code quality while a Github Actions CI is responsible for validating the build and publishing the release artifact. Additionally tracking of implementation progress and API documentation was introduced to increase organizational awareness. Also support for the cross functional team has been provided to switch from kanban to a scrum based workflow.

Team of 1 Android - 1 iOS - 2 UI/UX - 2 PM/PO


12/2021 - 06/2022
Car Retail Application
Mobile.de GmbH (Adevinta) (Internet und Informationstechnologie)

Development of a large scale car retail app in a cross functional team that makes use of the scrum methodology. The native and multi module Kotlin application utilizes an extended MVVM architecture combined with Dagger for dependency injection. RxJava makes the app reactive, while Shared Preferences is used for local data storage. The UI is created using Android Views combined with Data Binding, supported by custom Binding AdaptersUnit tests, built with Truth and BDD Mockito, ensure highest code quality. Restful API’s are realizing the backend communication. All developers took the responsibilities of Pull Request reviews and release management. The project is checked by a comprehensive CI.

Team of 2 Android - 2 Web - 1 iOS - 2 BE - 1 UX - 1 EM - 1 PM/PO


12/2020 - 07/2021
Zero Based Budgeting App (ZBBA)
Personal Project

ZBBA is a native money management app written in Kotlin. This from scratch designed and implemented project is largely inspired by YNAB. An MVVM architecture and Hilt for dependency injection build the foundation. Room is used to persist transactional data, while DataStore is responsible for saving simple session information. The application is highly reactive using Kotlin Flows API combined with LiveData. The UI consists of a View based layout combined with Jetpack Compose. A full range of unit tests using JUnit 4 and Mockito ensure highest code quality. This is additionally reinforced with UI Tests written in Espresso and Jetpack Compose testing framework. The GitHub repository includes a basic CI built with GitHub Actions.

08/2018 - 09/2018
2048 - The Clean One
Personal Project

2048 is a classical number game originally created by Gabriele Cirulli. This version represents the game in a minimalistic look with modern animations. The self directed native project is designed with Adobe XD and implemented from scratch with Java in a View based UI. The game board itself is as a custom View. Games are automatically locally persisted using Shared Preferences and can be resumed at any time. The game includes monetization with Admob and shows rewarded ads to fill up the undo count. Also Play Game Services SDK is used for achievements. This app is published on Google Play and includes Firebase tracking.

08/2017 - 06/2018
BvC Vertretungsplan App
Bernhard-von-Cotta-Gymnasium

The BvC Vertretungsplan App gives students the ability to view their substitution plan on their smartphone. The self directed Java project was conceptualized, designed and implemented from scratch as a high school project. The app includes login data validation and parsexml files from the school server to get the substitution plan. The project was designed with Adobe XD and implemented as a View based native Android app. Firebase is added for tracking installs and usage. After the app received the highest possible grade it was published on Google Play and officially introduced as a substitution plan app in the school.

04/2017 - 07/2017
MyMusic (Music Visualizer)
Personal Project

MyMusic plays and visualizes locally stored music in real time. The Java app provides a View based UI for choosing songs grouped by Playlists, Albums, Genres and Artists. The native project created from scratch is self directed and motivated by passion for trap music and seeing it visualized. Songs and their metadata are queried with Androids ContentResolver. To realize a high resolution visualization via FFT, low level Android Media APIs like MediaCodec and AudioTrack are used to get access to raw audio data. The FFT data is processed in realtime and rendered via Androids TextureView with the use of low level canvas drawing APIs. The application includes 5 different visualizations with special focus to visualize lower frequencies in an entertaining manner.


Reisebereitschaft

Verfügbar in den Ländern Deutschland, Österreich und Schweiz

Bewertungen

Lead Software Engineer, Android (Thomas Rebouillon)
"I had the pleasure of working with Daniel. He thinks quickly, is good at familiarising himself with new things and asks the right questions. In addition, he does his job quickly and with good quality. Furthermore his code reviews always have been valuable and helped keeping the code base in a good shape. In addition to programming, Daniel is also able to take on activities such as release management without any problems. In short, a very professional Android developer."
Adevinta
Lead Product Manager (Philip Brechler)
"Daniel was part of a team that I am leading as a product manager, working on an online financing flow in our Kotlin Android app. He showed a strong commitment to his work and the value created, always advocated for creating the best solution for the user and business, while keeping the code clean. Although he only worked with us for half a year as a contractor, he became an integral part of the team. I can highly recommend hiring him for any team that needs a strong and committed engineer."
Profilbild von Daniel Weidensdoerfer Freelance Android Engineer aus Dresden Freelance Android Engineer
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