iOS Engineer

Location: Berlin, in-office

Our team sits within the Global Operations organization, where our mission is to deliver the best customer experience in the fintech industry by providing an effortless and seamless experience to all our merchants. We are dedicated to redefining how customer support operates by building cutting-edge solutions that empower our users and enhance their journey.

As part of this vision, the iOS Engineering team plays a crucial role in integrating innovative solutions directly into our mobile ecosystem. We work closely with cross-functional teams, to develop state-of-the-art tools and features that revolutionize customer support on iOS devices. By creating intuitive, secure, and scalable mobile experiences, we ensure our merchants can access the support they need effortlessly, anytime and anywhere.

This role is part of a well-established and collaborative team comprising a Product Manager, Engineering Manager, Designer, Android and iOS developers, Frontend and Backend engineers.

What you’ll do

• Build and maintain innovative digital support features within the customer support funnel to deliver a seamless and impactful user experience
• Collaborate with stakeholders to ensure consistent APIs, WebSocket implementations, and AI-first screen designs
• Write clean, efficient code for user interfaces and support features, while developing robust unit tests to ensure high-quality, reliable deliverables
• Implement robust tracking for analytics and configure A/B tests to evaluate feature success and optimize performance
• Monitor app performance, establish alerts, and proactively troubleshoot issues to ensure reliability and stability
• Maintain design consistency by aligning implementation with the overall product experience and standards

You’ll be great for this position if you

• Are proficient in the Swift ecosystem with 3+ years of iOS development experience
• Strive for clean, maintainable code and have hands-on experience with modularized applications
• Prioritize user interaction, usability, and crafting visually appealing, intuitive UIs
• Have a solid understanding of testing principles—knowing what to test, why to test it, and how to write robust, flexible tests that stand the test of time
• Thrive in a collaborative, cross-functional team environment where mutual empowerment and growth are core values
• Are passionate about coding and take time to reflect on your work—be it frameworks, languages, or processes—to continuously improve
• Demonstrate high autonomy, excellent communication skills, and the ability to prioritize and focus on impactful work
• Go beyond writing code by caring deeply about delivering value to merchants, embracing a product-focused mindset, and maintaining a proactive, can-do attitude

Why you should join SumUp

• Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our Berlin office. This involves an office-first setup
• Commitment to Diversity and Inclusion: Be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced
• A dedicated annual L&D budget of €2,000 for attending conferences and/or advancing your career through further education
• Enrolment onto our VSOP program: You will own a stake in SumUp’s future success
• Corporate pension scheme where we match up to 20% of your contributions
• 30 Days Sabbatical: Enjoy the unique opportunity to take a well-deserved break with our 30 days sabbatical benefit after completing 3 years of employment with SumUp
• Referral Bonus: Earn additional rewards by referring talented individuals to join the SumUp team
• Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, relocation assistance, subsidised office lunches

About us

SumUp is a leading financial technology company, founded in 2012 with the goal of empowering small businesses around the globe. We’re the financial partner of choice for more than 4 million merchants in over 35 markets. We collectively build, plan and fine-tune the technology that drives SumUp and empowers small businesses around the world.

We believe in the everyday hero. Those who have the courage to follow their passion and who have the strength and determination to realise their dreams. Small business owners are at the heart of all we do, so we're creating powerful, easy-to-use financial solutions to help them run their business. With a founders mentality and a 'team-first attitude' our diverse teams across Europe, South America, and the United States work together to ensure that small business owners can be successful doing what they love.

SumUp is an Equal Employment Opportunity employer that proudly pursues and hires a diverse workforce. SumUp does not make hiring or employment decisions on the basis of 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. SumUp also strives for a healthy and safe workplace and strictly prohibits harassment of any kind.