Android Developer

🚀 Freelance Opportunity: Very Experienced Senior Android Developer (Berlin | 10-Month Contract)

A leading digital marketplace in Germany is looking for a very experienced Senior Android Developer to join their Core User Experience Team. This freelance role is ideal for someone who thrives in high-impact environments and wants to shape the mobile experience for millions of users.

📅 Duration: 10 months

🕐 Start Date: ASAP

🌐 Language: English (working proficiency)

🔧 What You’ll Be Doing:

• Lead development of key features in the consumer-to-consumer (C2C) journey: Homepage, Search, Ad Insertion.
• Drive accessibility improvements across the Android platform.
• Collaborate with UX and product teams to deliver scalable, user-centric solutions.
• Own the full development lifecycle—from architecture to deployment.

✅ Must-Have Expertise:

• Extensive Kotlin & Android SDK experience
• Deep understanding of MVVM/MVI/Clean Architecture
• Dependency injection (Dagger Hilt, Koin)
• Reactive programming (RxJava, Kotlin Flow)
• Jetpack Compose experience
• CI/CD for mobile, test-driven development (JUnit, Espresso, Robolectric)
• Strong communication skills in English

🌟 Nice-to-Haves:

• Mobile performance & battery optimization
• Firebase Analytics, Crashlytics
• A/B testing frameworks
• Background in e-commerce or classifieds platforms