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Senior Software Engineer, Android - KMP (Berlin)

SumUp
Mobile Developer • Senior • On-site • Full-time • 📍 Berlin
📄 View original listing (EN)

SumUp's Point-of-Sale (POS) solution helps cafes, shops, bars, hair salons and other businesses operate and grow, integrated into the SumUp SuperApp. As a Senior Android Developer in this on-site Berlin role, you will help implement the company's Kotlin Multiplatform (KMP) strategy for shared Android and iOS development, and coach and mentor other engineers within a cross-functional team.

Stack

androidiosKotlinSpark

Responsibilities

  • ▹Build new features for the item catalog within the SumUp SuperApp
  • ▹Improve the application architecture and contribute to the Kotlin Multiplatform strategy
  • ▹Enhance and maintain the unified Android app distributed across 60+ countries
  • ▹Shape the product's evolution by identifying improvement opportunities and contributing to daily decision-making
  • ▹Write thorough documentation and implement robust testing before shipping features
  • ▹Collaborate closely with Designers, Product Managers and Android engineers for a unified UX across platforms
  • ▹Coach and mentor other engineers

Requirements

  • ▹8+ years of experience in mobile engineering with Android and Kotlin
  • ▹2+ years of experience with Jetpack Compose
  • ▹Solid understanding of software design patterns (e.g. MVVM, MVI) and modular, scalable app architectures
  • ▹Good knowledge of reactive programming (Flow, Coroutines and concurrency)
  • ▹Strong grasp of testing best practices
  • ▹Strive for clean code with a balance of pragmatism and perfection
  • ▹Keen interest in multi-platform development using Kotlin Multiplatform

Soft skills

User-centric mindsetPrecisionStructured communicationCross-functional collaborationCoaching and mentoring

What we offer

  • ▹Regular training, mentorship programs, SumUp University leadership cohort and a yearly learning budget (€2,000)
  • ▹28 days paid leave plus 1 for birthday
  • ▹Sabbatical program for tenured employees
  • ▹Health & wellness benefits: in-house fitness classes, office gym, subsidized Urban Sports Club and psychotherapy sessions
  • ▹Subsidized public transport card, Kita placement assistance, pension scheme and language learning courses
  • ▹Virtual stock ownership program with a stake in SumUp's success

About the company

SumUp is a company that values diversity and unique perspectives, building a banking solution from the ground up to solve real-life problems for millions of merchants worldwide, with a global team of skilled professionals.