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About the Role
This is a high-impact, hands-on engineering role where you'll own the development and quality of the SumUp Pay iOS application. You'll work directly on the features that consumers interact with every day, collaborating closely with Backend Engineers, Product Managers, Designers, and Android Engineers to deliver polished, reliable, and impactful mobile experiences.
Responsibilities
- Build and ship features across key consumer banking product areas—including KYC flows, card management, savings, open banking consent, and payment experiences.
- Write clean, testable Swift code and participate actively in code reviews to uphold high engineering standards across the codebase.
- Contribute to and evolve the iOS app architecture, including modularisation, dependency management, and scalability patterns as the product grows.
- Own performance and reliability by monitoring crash rates, proactively identifying issues, and driving app stability before they impact consumers.
- Maintain a culture of quality by writing unit and UI tests and contributing to the health of our CI/CD pipelines.
- Collaborate cross-functionally with Backend Engineers on API design, Product Managers on roadmap priorities, and Designers on seamless user experiences.
Requirements
- Strong proficiency in Swift and deep knowledge of the iOS framework (Objective-C knowledge is a plus).
- Solid understanding of RESTful API integration and experience working with backend engineers on API design.
- Experience working with agile methodologies, CI/CD pipelines, and pair programming.
- Deep care for user interaction, usability, and interface quality—you build things that feel great to use.
- Ability to understand a large problem, design a solution, break it into deliverable chunks, and ship it independently.
- Passion for clean, maintainable, and testable code and a genuine pride in your craft.
- Mature, business-minded approach—balancing high-quality engineering with pragmatism in a fast-paced environment.
- Self-driven and proactive nature, comfortable owning a domain with limited direct oversight.
- Previous experience in payments, financial services, or fintech environments is a strong plus.
Skills
- Swift
- iOS framework
- Objective-C
- RESTful API integration
- API design
- Agile methodologies
- CI/CD pipelines
- Pair programming
- User interaction
- Usability
- Interface quality
- Problem-solving
- Solution design
- Code quality
- Testability
- Business acumen
- Pragmatism
- Self-driven
- Proactive
- Ownership
- Payments
- Financial services
- Fintech
Location
- Global
Work Type
- Full-time
Experience Level
- Mid-level
- Senior
Benefits
- Enrolment onto our Virtual Stock Option programme
- Dedicated annual L&D budget
- Competitive Health & Life Insurance (comprehensive cover including optical, dental, and Life Assurance)
- Corporate pension scheme
- Referral bonus
- 28 days of paid leave plus public holidays and special leave days
- 1-month paid sabbatical after 3 years of service
- Global offsites and/or hackathons
About the Company
- At SumUp, we're on a mission to empower small businesses across the globe by providing a vast set of simple and affordable business tools to help them start, run, and grow their businesses.
- Today, over 4 million businesses in 36 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.
- Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset.
- Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success.
- We foster an inclusivity and continuous learning culture, providing a safe space for personal and professional growth.
- Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify.
Equal Opportunity
- SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce.
- We don't make hiring or employment decisions 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.
- Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited.