z
zaini761

Zain Ul Abideen

@zaini761

Android App Developer Kotlin Firebase API Integration

Pakistan
About me
Hi, I’m Zain Ul Abideen, an Android Developer with 5+ years of hands-on experience. I specialize in Kotlin, Java, REST APIs, Retrofit, Firebase, FCM, MVVM, Hilt, XML, and Jetpack Compose. I build, fix, and maintain Android apps, including AI-powered and ML-based applications. I can help with app development, API and Firebase integration, bug fixing, UI development, app updates, and Play Store releases. I focus on clean work, reliable solutions, and clear communication. ... Read more

Skills

z
zaini761
Zain Ul Abideen
Offline • 
Average response time: 1 hour

See my services

Android App Development
I will fix android app bugs, crashes and errors in kotlin or java
From$100 / projectMore details

Portfolio

Work experience

Brainarcs

Android developer

Brainarcs • Full-time

Oct 2025 - Present • 11 mos

I worked as an Android Developer on Yulys, a production job search and recruitment application. I contributed to both job seeker and employer experiences, developing and maintaining Android features using Kotlin, MVVM, Hilt, Retrofit, Firebase, and FCM. My responsibilities included REST API integration, authentication flows, job search and filtering, application features, push notifications, UI development, debugging, testing, and resolving production issues. I also worked on Android releases and updates for the Google Play Store. This experience gave me practical experience working with a real production codebase, backend APIs, different user flows, device-specific issues, and maintaining reliable Android applications.