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# Senior Android Developer

- **Company:** 30Seconds Group
- **Location:** Manchester, UK
- **Experience:** Expert
- **Salary:** £55,000.0 - £70,000.0
- **Contract:** Permanent contract
- **Skills:** 4G (Telecommunication), Android Software Development, Fault Tolerance, Kiosk Mode, Remote Infrastructure Management, TypeScript, Web Applications, Wi-Fi Technology, Delivery Pipeline, Kotlin
- **Published:** June 19, 2026
- **Apply:** https://uk.indeed.com/viewjob?jk=2ff4f2e4e3036390

## About the Role

Do you have experience in TypeScript?, * 5+ years of native Android development in Kotlin

 * Production experience with long-running apps, kiosk mode, or digital signage
 * Solid grasp of the Android lifecycle, background work, foreground services, and what actually happens to an app left running for weeks
 * Experience with OTA updates, remote configuration, or fleet management at meaningful scale
 * Comfort with offline-first thinking: caching, sync, conflict handling, the lot
 * A track record of owning technical decisions and talking through the trade-offs you made

## Description

You'll be the senior Android engineer responsible for the software running on a fleet of 1,000+ devices across the UK. Unlike a phone app, our application is a long-running, kiosk-mode Android application where reliability, remote management and offline resilience are critical. A bug that crashes the app in a Manchester lift lobby is a bug a property manager calls us about.

You'll own the Android side end to end: the on-device application, OTA update strategy, device provisioning, observability, and the integrations that pull content down and push telemetry up. You'll work directly with the Technical Director and other engineers.

What you'll do

 * Own the Android application from feature work and architecture through to performance and stability
 * Build and maintain the systems that keep the fleet healthy: OTA updates, remote configuration, crash and uptime monitoring, alerting
 * Work in kiosk / device-owner mode: full-screen lock-down, auto-recovery, watchdogs, locked-down launchers
 * Make the app resilient to flaky building WiFi/4G: aggressive caching, offline playback, graceful degradation, retry strategies
 * Build the content delivery pipeline: scheduling, prefetching, media playback (images, video, scrolling notices), and real-time push when something urgent needs to go out
 * Help shape how the back end, the property manager web app, and the displays fit together


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