As an iOS Engineer in the Design System team, you will translate SumUp's design language into an easy-to-use, reusable library of UI components and experience patterns, enabling product teams to build cohesive and accessible experiences. The Design System team collaborates closely with the Mobile Platform team to provide guidance and set standards across all product teams, and is expanding to cover SumUp's growing ecosystem of merchant and consumer-facing products. The role is office-first, based in Berlin.
Responsibilities
- ▹Shape the core experience of users and developers interacting with SumUp's ecosystem
- ▹Work closely with product and design 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 technical debt proactively to ensure a high bar for engineering excellence and codebase health
Requirements
- ▹3+ years of professional experience in iOS development
- ▹Fluency in Swift and Objective-C, with deep knowledge of both SwiftUI and UIKit
- ▹Pride in crafting accessible user experiences and a strong grasp of testing best practices
- ▹A self-motivated, clearly structured working style and excellent English communication skills
- ▹Enthusiasm for keeping up to date with the iOS ecosystem and sharing knowledge with the iOS community
Soft skills
What we offer
- ▹Virtual Stock Option programme (a stake in SumUp's success)
- ▹Annual L&D budget of €2000
- ▹Corporate pension scheme matching up to 20% of contributions
- ▹28 days of paid leave plus public holidays and special leave days
- ▹Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches
- ▹Break4me: 1-month sabbatical after 3 years of service
- ▹Referral bonus
About the company
SumUp believes in the everyday hero and creates tools that help small business owners run their businesses. With a founder's mentality and a team-first attitude, its diverse teams across Europe, South America and the United States support small business owners. SumUp is an Equal Employment Opportunity employer.