The Mobile Platform Squad is the backbone of SumUp's iOS engineering — we build and maintain the foundation that every iOS feature team relies on to ship fast, confidently, and at scale.
We're a small, high-impact team that sits at the intersection of infrastructure, developer experience, and engineering excellence. Our work isn't visible to merchants directly, but it's felt by every iOS engineer at SumUp every single day — through faster build times, smoother CI/CD pipelines, healthier codebases, and better tooling.
With significant investment in SumUp's mobile products, we're on a mission to empower feature teams to deliver world-class experiences without being slowed down by platform friction. That means building robust internal frameworks, evolving a mature and complex codebase, and acting as a trusted partner to mobile engineers across the organization.
Our engineering culture is built on autonomy, collaboration, and craft. We move with purpose, share knowledge openly, and believe that great platform work is what makes great product work possible. If you're someone who finds deep satisfaction in enabling others to do their best work — you'll feel right at home here.
What you'll do:
- Develop and maintain internal tools, frameworks, and infrastructure that support the consistency, scalability, and long-term health of SumUp's iOS app
- Contribute to CI/CD systems and developer tooling initiatives that help feature teams ship with speed and confidence
- Tackle technical debt and codebase health improvements in a complex, mature codebase — with a focus on simplicity and maintainability
- Collaborate closely with mobile engineers across squads, acting as a go-to partner for platform questions, reviews, and best practices
- Take end-to-end ownership of well-scoped platform initiatives — from design and implementation through to delivery and documentation
- Bring 3+ years of professional iOS development experience, with solid hands-on knowledge of Swift and modern iOS frameworks
- Are experienced with or genuinely excited about CI/CD pipelines (e.g., GitHub Actions, Fastlane) and developer tooling — you see automation as a superpower
- Have a solid understanding of testing methodologies, architecture patterns, and design principles, and apply them with pragmatism
- Are comfortable working outside the boundaries of a typical feature team — you're adaptable, self-directed, and thrive with a mix of structured and ambiguous work
- Can navigate and improve complex, mature codebases with patience, curiosity, and a long-term mindset
- Communicate and collaborate clearly across teams — you're comfortable with frequent context switching and know how to bring clarity to technical discussions
Experience with modularized codebases, internal tooling, or Ruby scripting
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
🧑🔬 We take learning and experimentation seriously with Hack Days every second Friday, and entire global Hack Weeks.
🌈 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
💶 A 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
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.
About us:
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.
Job Application Tip
We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.
Skills Required
- 3+ years of professional iOS development experience with Swift and modern iOS frameworks
- Experience with CI/CD pipelines and developer tooling (e.g., GitHub Actions, Fastlane)
- Solid understanding of testing methodologies, architecture patterns, and design principles
- Ability to navigate and improve complex, mature codebases with a long-term mindset
- Comfortable working autonomously across teams and handling ambiguous, cross-boundary work
- Strong communication and collaboration skills for partnering with multiple mobile squads
- Experience with modularized codebases, internal tooling, or Ruby scripting
SumUp Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about SumUp and has not been reviewed or approved by SumUp.
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Leave & Time Off Breadth — Paid time off is positioned as a standout, including 22 vacation days that increase with tenure, public holidays, a quarterly Wellness Day, special leave, and a fully paid one‑month sabbatical after three years. This combination makes time-off benefits feel notably robust in the overall rewards package.
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Healthcare Strength — Health coverage is described as comprehensive, with medical plan options (including carriers such as Cigna and Kaiser) plus dental and vision. Company-paid life insurance and disability coverage are also part of the protection package in the U.S. materials.
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Retirement Support — Retirement benefits include a published 401(k) match formula that provides an employer match up to a stated cap. The clarity of the match structure supports straightforward evaluation during offer comparisons.
SumUp Insights
What We Do
SumUp believes that every business should have access to affordable, easy-to-use financial solutions, no matter their size. That’s why more than 3 million businesses worldwide rely on SumUp to run their business. What started out as one card reader has now turned into a range of payment hardware, banking solutions, marketing, and loyalty tools, invoicing, and so much more. From sales and marketing to product and engineering, our cross-functional US team works together to ensure that small business owners can be successful doing what they love.
Why Work With Us
SumUp USA is part of the global SumUp organization that stretches across multiple continents from Berlin to Sao Paulo. Our teams are multicultural, have a collaborative mindset and bold goals. Join our mission if you want to become part of the success story and help empower over 3 million merchants using SumUp already!
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