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# iOS Engineer - Design System

- **Company:** SumUp
- **Location:** Köln, Germany
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Code Review, Human-Computer Interaction, Uikit, Mobile Os, Swiftui, Ios Frameworks, Objective C++
- **Published:** July 2, 2026
- **Apply:** https://de.indeed.com/viewjob?jk=a2eef0930a64ebb9

## About the Role

* You have 3+ years of professional experience in iOS development.
 * You are fluent in Swift and Objective-C, with deep knowledge of both SwiftUI and UIKit.
 * You take pride in crafting accessible user experiences and have a strong grasp of testing best practices.
 * You have a self-motivated, clearly structured working style and excellent English communication skills.
 * You enjoy keeping up to date with advancements in the iOS ecosystem and are excited about sharing your knowledge with the iOS community.

## Description

As an iOS Engineer in the Design System team, you will translate SumUp's design language into an easy-to-use, reusable library of user interface components and experience patterns, enabling product teams to build cohesive and accessible user experiences. The Design System team collaborates closely with the Mobile Platform team to provide guidance and set standards for all product teams across the company.

The Design System team is expanding to cover SumUp's growing ecosystem of merchant and consumer-facing products. This role offers a unique opportunity to optimize and expand a system that helps developers build features faster and deliver high-quality experiences to millions of users worldwide.

What you'll do

 * Shape the core experience of users and developers interacting with SumUp's Android ecosystem.
 * Work closely with the product and design team to build components that are maintainable, usable, beautiful and consistent.
 * Embed accessibility best practices into every component (content descriptions, touch target size, color contrast, dynamic type).
 * Provide hands-on technical support to product teams to deliver company priorities, such as the upcoming brand refresh.
 * Review code contributions, enforce design-system conventions, and guide engineers on best practices for reusable UI development.
 * Migrate legacy UIKit-based components to SwiftUI while maintaining system stability
 * Identify and address tech debt proactively to ensure a high bar for engineering excellence and codebase health.


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