iOS Engineer - Design System at SumUp in Berlin

About the team: As an iOS Engineer on the Design System team, you'll translate SumUp's design language into a reusable, easy-to-use library of UI components and experience patterns — empowering product teams to build cohesive, accessible user experiences at scale. The Design System team works hand-in-hand with the Mobile Platform team to set standards and provide guidance across all product teams at SumUp. As we expand our ecosystem of merchant and consumer-facing products, this role offers a rare opportunity to shape the foundation that helps developers build faster and ship higher-quality experiences to millions of users worldwide. What you’ll do: Shape the core experience for both users and developers interacting with SumUp's iOS ecosystem Collaborate closely with product and design teams to build components that are maintainable, consistent, and beautiful Embed accessibility best practices into every component — from content descriptions and touch target sizing to color contrast and dynamic type Provide hands-on technical guidance to product teams to deliver on company priorities, including the upcoming brand refresh Review code contributions, enforce design system conventions, and mentor engineers on best practices for reusable UI development Lead the migration of legacy UIKit-based components to SwiftUI while maintaining system stability Proactively identify…