Omar Hassanein

Experience

• 

  ٕ

  Oct 2019 - Jun 2020

  Android Developer

  - Utilized Clean architecture to separate apps into layers and modules which reduced the build time to seconds in some cases.- Used Dagger-Hilt for dependency injection.- Improved app performance by paging remote data using paging 3.- Cached app data with complex schema using Room.- Utilized Kotlin Coroutines and flows for asynchronous work and MVVM to architect apps.- Used Maps to locate user addresses, create custom markers, and draw custom paths.- Worked with real-time in-app chat using Sockets. Show less

• 

  Freelance

  Aug 2020 - Dec 2023

  Mobile Developer

  - Introduced a QR code system to manage students' attendance in real time.- Worked with Exo-player to handle a large number of audio files from both local and remote data sources.- Introduced Jetpack Compose to improve performance and UI of apps.- Used Firebase different SDKs extensively to authenticate users, store data, push notifications, and keep offline data synced with remote data.- Scraped web data manually and using Jsoup and interacted with web components.- Worked with canvas API, compound views, and custom views to create custom UI. Show less

• 

  ALEXON INCORP. FOR E-SOLUTIONS

  Aug 2022 - Jul 2023

  Android Engineer

  - Responsible for architecting, building, designing, and publishing the company's projects.- Implement a custom view to manage different use case scenarios.- Collaborate with the IOS and Back-end teams to ensure that the app fits the client's needs.- Monitor a small team of developers, providing and exchanging knowledge between team members.- Improve, assist, and build new features for clients' apps.

• 

  Troido

  Aug 2023 - Jan 2024

  Mobile Engineer

  - Develop, and maintain well-architectured KMP projects using kotlin for shared logic.- Use Jetpack Compose to write shared UI across mainly Android and IOS.- Use Clean Architecture guidelines to structure the code base to be readable, testable, and scalable.- Use Ktor-Client for networking and Ktor-Server to write the backend.- Implement caching for relational data using SqlDelight, preferences using KMP Persistence, and local files cache mechanism.- Experiment with new technologies, and tech stack, and level up my IOS skills. Show less

• 

  1&1 Mail & Media Applications SE - GMX | WEB.DE | mail.com

  Jan 2024 - now

  Advance Android Engineer