Senior Android Developer (Contract)

📍 Location: Remote (Contract)

🗣 Language: English – B1+

💼 Level: Senior

👥 Engagement: Contract (8–12 weeks, possible extension up to 3–4 months; Full-time or Part-time, main focus — meeting the project deadline)

⏰ Start: ASAP

🏢 Project Overview

This is an internal project at UppLabs. We are looking for a Senior Android Developer to work on an Android Digital Signage network for retail.

The project includes:

• Android Player App running in kiosk mode on dedicated screens
• Scheduled media playlists (video/images) playback
• Offline-first caching: download media, validate integrity, manage storage cleanup
• Remote device management and monitoring
• Close collaboration with backend and frontend teams for smooth integration

The role is focused on delivering the MVP/Pilot phase with a clear deadline of 3–4 months. This is a contract role, either Full-time or Part-time, with the main goal being project completion within the timeline.

✅ Technical Stack

• Android: Kotlin, AndroidX
• Media Playback: ExoPlayer / Media3
• Architecture: MVVM / Clean Architecture (preferred), Coroutines + Flow
• Background Work: WorkManager, Foreground Services (if required)
• Networking: Retrofit / OkHttp
• Storage: Local caching (files), checksum validation
• DI: Hilt / Dagger
• Backend Integration: REST APIs over HTTPS, JWT-based device authentication
• CI/CD: GitHub Actions, Gradle
• Monitoring / Crash Reporting: Firebase Crashlytics / Sentry (optional)

🎯 Ideal Candidate

• 5+ years of professional Android development experience
• Experience with kiosk mode / lock task mode
• Strong understanding of offline-first architecture and caching
• Experience with media playback on Android (ExoPlayer / Media3), including video rendering performance and device codec differences
• Experience integrating with REST APIs and device authentication
• Experience with background processing tools (WorkManager, Foreground Services if required)
• Debugging and performance profiling skills (memory leaks, playback issues, ANRs)
• Ability to write clean, maintainable code and follow architecture best practices

Nice to Have:

• Android Enterprise / Device Owner provisioning
• MDM deployments or Private Play Store distribution
• Real-time device monitoring / IoT-like systems
• Familiarity with crash reporting and remote diagnostics (Firebase Crashlytics, Sentry, etc.)
• OTA update strategies for Android fleets

🛠 Responsibilities

• Develop the Android Digital Signage Player App (Kotlin)
• Implement kiosk mode / lock task mode reliably on multiple devices
• Auto-start on boot and recovery mechanisms for unattended devices
• Build a media playback engine for videos and images (playlists, loops, transitions)
• Offline-first caching and storage management
• Integrate with backend APIs: device registration/pairing, heartbeat/status reporting, playlist synchronization, remote commands (refresh/reboot)
• Ensure performance and reliability for long-running playback sessions
• Collaborate with backend and frontend teams to define API contracts and ensure smooth integration
• Support testing, debugging, and pilot deployment on real devices

🚀 Hiring Process

1️⃣ Screening with recruiter

2️⃣ Technical interview

3️⃣ Offer