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About the Role
The Order Taking squad owns core ordering experiences within SumUp’s Point of Sale app, including the shopping bag, checkout, the catalog experience within ordering, open orders, table management and printer integrations. These capabilities help thousands of hospitality merchants manage orders reliably during daily service. As a Senior iOS Engineer, you’ll build new hospitality workflows and evolve established ordering experiences across iOS and Android. You’ll work with SwiftUI on the platform-specific UI and contribute to shared Kotlin Multiplatform business logic. The role involves complex mobile engineering across multi-device synchronisation, shared order state and a large, established application. You’ll join a small, experienced and fast-moving squad that works collaboratively through technical refinement, code reviews and pair programming. The team values engineers who communicate directly, challenge assumptions and proactively shape solutions rather than simply execute predefined tasks.
Responsibilities
- Design and build new ordering experiences in SwiftUI, while evolving established capabilities such as table management, kitchen workflows and printer integrations
- Contribute to shared Kotlin Multiplatform business logic and help shape the architecture of the ordering domain
- Improve the reliability and usability of ordering features used daily by hospitality merchants across phones, tablets and POS devices
- Collaborate closely with Android engineers and platform teams to maintain consistent cross-platform behaviour and reliable multi-device order synchronisation
- Take part in code reviews, pair programming and collaborative testing to maintain a high quality bar
- Help refine and scope upcoming work, bringing technical judgement to product and architectural trade-offs
- Contribute to Mobile Chapter and KMP platform initiatives across the wider POS tribe
Requirements
- 5+ years of experience building production iOS applications in Swift, with strong SwiftUI knowledge
- Experience working in a large, established codebase and making pragmatic improvements without requiring a full rewrite
- Openness to learning and contributing to Kotlin and Kotlin Multiplatform; previous hands-on KMP experience is welcome but not required
- Ability to work independently, challenge assumptions, propose solutions proactively and communicate clearly and directly
- Experience collaborating closely with Android engineers or other cross-platform partners to align product behaviour
- Sound technical judgement and the ability to balance product delivery, code quality and long-term maintainability
Skills
- SwiftUI
- Kotlin
- Kotlin Multiplatform
- Swift
Location
- Berlin
Work Type
- Office-first
Experience Level
- Senior
Benefits
- Virtual Stock Option programme
- Dedicated annual L&D budget of €2000
- Corporate pension scheme with up to 20% company match
- 28 days of paid leave plus public holidays and special leave days
- Urban Sports Club subsidy
- Kita placement assistance
- Subsidised office lunches
- 1-month sabbatical after 3 years of service
- Referral Bonus
About the Company
- SumUp empowers small businesses across the globe by providing simple and affordable tools that allow them to thrive.
- Over 4 million businesses in 39 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.
- The team consists of over 4,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset.
- Core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success.
- Fosters inclusivity and a continuous learning culture, providing a safe space for personal and professional growth.
- Strives to create an environment where everyone belongs and feels supported.
Equal Opportunity
- SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce.
- Hiring and employment decisions are not made based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy.
- Committed to creating a safe and respectful workplace where harassment of any form is strictly prohibited.