Open to opportunities

Abubaker Abubaker

@abubakerabubaker1

Senior Android engineer delivering scalable apps with Kotlin, Jetpack Compose, and Clean Architecture—performance, scalability, and maintainability.

Germany

Message

What I'm looking for

I’m looking for a senior Android role where I can own end-to-end delivery—architecture through release—using Kotlin, Jetpack Compose, and Clean Architecture. I want a quality-focused team that values performance, scalability, and maintainable systems.

I’m a senior Android engineer with 10+ years of experience building scalable mobile applications used by millions of users. I specialize in modern Android development using Kotlin, Jetpack Compose, and Clean Architecture, with a strong focus on performance, scalability, and maintainability.

In my recent role, I led architecture and development at CHECK24, including migrating from XML to Jetpack Compose, building reusable components in a shared SDK, and integrating Jenkins-based CI/CD with automated testing (Espresso, JUnit) to reduce release cycles by ~70%. I also owned end-to-end releases (alpha → production), resolved critical SDK-level issues under tight deadlines, and supported team efficiency as Scrum Master.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer – Android

Current

CHECK24 Vergleichsportal GmbH

Apr 2021 - Present (5 years 3 months)

Led architecture and development of scalable Android applications using Jetpack Compose, improving UI performance and maintainability. Migrated from XML to Jetpack Compose, built a shared SDK/library, and owned end-to-end release processes while integrating Jenkins-based CI/CD with automated tests.

Kotlin Jetpack Compose Clean Architecture Android UI XML To Jetpack Compose Migration Android SDK Development Jenkins CI CD Espresso Junit Release Automation Scrum Master

Mobile App Test Automation Engineer

Bosch eBike | Digitalwas

Mar 2020 - Apr 2021 (1 year 1 month)

Contributed to a test automation framework for a connected bike and smartphone system, supporting Agile delivery. Worked with Jenkins and CI/CD automation (Python scripts), executed Android and iOS functional/acceptance tests, and managed release workflows.

Test Automation Test Automation Framework Jira Plugin Evaluation Jenkins CI CD Pipelines Python Automated Testing Functional Testing Acceptance Testing Android Testing IOS Testing Release Management

Senior Android/Android TV Engineer

STARZ PLAY

Jul 2018 - Sep 2019 (1 year 2 months)

Developed high-performance OTT streaming applications for mobile and Android TV, supporting large user bases and real-time content delivery. Integrated adaptive bitrate streaming (DASH/HLS) with ExoPlayer, modernized the codebase from Java to Kotlin (MVVM), and implemented reusable internal SDKs/libraries.

Android TV Kotlin Java ExoPlayer Dash HLS MVVM SDK Security Standards Content Protection Performance Optimization Google Analytics Agile Scrum Jira Confluence Bitbucket

Senior Software Engineer – Android

Nextbridge

Jul 2015 - Jul 2018 (3 years)

Designed mobile and end-to-end system architectures, translating client goals into feature-level modules and sub-components. Collaborated cross-functionally with Android, Web, Backend, Design, and QA teams, including work on backend API integration to support scalable and maintainable systems.

System Architecture Backend Integrations Scalability Performance Engineering Maintain Cross Functional Collaboration

Software Engineer – Android

VirtualBase

Jul 2014 - Jul 2015 (1 year)

Developed Android applications and supported the product lifecycle from requirements gathering and estimation through deployment on the Google Play Store. Conducted R&D on new technologies and frameworks.

Requirements Gathering research and development R&D