Senior iOS Engineer - Global Bank

About the Team

At SumUp, we’re on a mission to empower small businesses around the world by giving them the tools they need to thrive. Over 4 million merchants in 36 countries trust us as their financial partner, and we’re proud to help them manage payments, finances, and customer relationships with ease.

Our Global Bank Tribe is at the heart of this mission, building a cutting-edge digital banking experience tailored to the unique needs of small businesses. Whether simplifying mobile banking or enabling seamless financial transactions, our SuperApp is transforming how merchants manage their finances – quickly, intuitively, and effectively.

About the Role

As a Senior iOS Engineer in the Global Bank tribe, you’ll play a key role in shaping the future of mobile banking for millions of merchants worldwide. You’ll tackle complex technical challenges, refine our modular architecture, and build elegant, server-driven UI solutions for diverse markets.

This isn’t just about writing code – it’s about crafting a product with purpose. You’ll have the chance to see your impact at scale, collaborate globally, and deepen your skills in a supportive and innovative environment. Together, let’s redefine what banking can do for small businesses.

What You’ll Do

• Design, build, and maintain the mobile banking features to empower our global merchant userbase with smooth and engaging banking operations.
• Write high-quality, clean, and scalable code that meets the highest standards of performance and reliability.
• Contribute to architectural discussions, propose innovative solutions, and help shape the technical roadmap of our iOS applications.
• Work closely with product and design teams to deliver features that are maintainable, user-friendly, and visually beautiful.
• Mentor junior engineers and share knowledge across the Mobile Chapter and the broader organization.
• Debug and test code rigorously to ensure reliability and quality for a global user base.
• Develop a wealth of knowledge about our complex problem domain as well as its implications in the interface and the backend – and how to manage it in a clean way.

You’ll Be Great for This Role If

• You have experience building and shipping scalable complex iOS applications.
• Are skilled in Swift, Combine, and SwiftUI, with a passion for clean, maintainable code.
• You have a solid understanding of software design patterns (e.g., MVVM, MVP) and expertise in building modular, scalable app architectures.
• You strive for clean code and know how to write flexible tests that won't break.
• You have expertise with testing frameworks and know how to implement robust test strategies (unit, snapshot, XCUITest, etc.).
• Care deeply about usability, quality, and building seamless user experiences.
• You have a product-focused mindset, enjoy collaborating with cross-functional teams, and take ownership of your work.
• Have great English communication skills - you'll be part of a truly global team! 

Why you’ll enjoy working at SumUp:

• Be part of a global company building payment solution for millions of small businesses and see your impact on real-life problems. 
• Global Experience: Join our global off-sites, hackathons, and events, and collaborate with a diverse team of 3,000+ people from over 90+ countries
• Career growth and learning opportunities: We invest in your development through regular training, mentorship programs, SumUp University leadership cohort and a yearly learning budget of R$ 10,000, which you can use for conferences, certifications, and further education to enhance your skills.
• Sabbatical program for tenured SumUppers.
• Join a global team where you belong: Check out our D&I Initiatives and Employee Resource Groups such as Pride Club, SumAfro, Neurodiversity, Grupos Mais, Women in Tech, and more.
• We care deeply about our team’s well-being and offer a range of benefits, including health plans, meal vouchers (VR), Zenclub, Gympass, life insurance, a pension plan, childcare allowance, available psychotherapy sessions and more.
• A lot of other benefits such as Subsidized Public Transport Card, Kita placement assistance, Pension Scheme, Language Learning platform/courses etc.
• Enrollment onto our virtual stock ownership program - you will own a stake in SumUp’s future success.

About SumUp

Be empowered to do more that matters.

At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. 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 inclusivity and a 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. 

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.

Explore career opportunities with us and join a team driven by collaboration, innovation, and a shared vision of creating a world where everyone can build a thriving business. Discover more about our vibrant and inclusive work culture and how we work on our careers website, and follow our journey on LinkedIn and Instagram.