Senior Android Engineer
SumUp - London, England, United Kingdom
Posted Mar 19, 2026
Benefits
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About this role
Senior Android Engineer London, England, United Kingdom As a Senior Android Engineer, you will be at the forefront of shaping our specialized merchant-facing ecosystem. You'll have the unique opportunity to build and scale high-impact solutions - including Kiosks, Kitchen Display Systems (KDS), Customer Facing Displays (CFD), and POS peripherals - that power complex retail and restaurant environments worldwide. In this role, your work will directly bridge the gap between hardware and software, creating seamless, world-class experiences for millions of merchants and their customers. What you'll do: - Drive the development and scaling of Android-based merchant solutions, focusing on self-service Kiosks and specialized point-of-sale interfaces. - Build and refine high-impact features that enhance the merchant and consumer experience across a diverse product suite. - Support our transition toward Kotlin Multiplatform (KMP) to share business logic across the wider mobile ecosystem. - Create maintainable, accessible, and performant user interfaces using Jetpack Compose. - Strengthen product reliability by implementing robust testing suites and expanding automated QA coverage across our hardware-integrated software. - Collaborate with cross-functional teams to deliver cohesive features that meet the needs of global enterprise partners. - Lead code reviews, enforce architecture standards, and mentor other engineers on best practices for reusable UI development. You'll thrive in this role if - You have 5+ years of professional Android development experience with deep expertise in Kotlin. - You bring 2+ years of hands-on experience building production applications with Jetpack Compose. - You possess professional experience or a keen interest in Kotlin Multiplatform
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