(Senior) iOS Engineer - Global Bank
(Senior) iOS Engineer - Global Bank

(Senior) iOS Engineer - Global Bank

London Full-Time 36000 - 60000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and build mobile banking features for millions of merchants worldwide.
  • Company: Join SumUp, empowering small businesses with innovative financial tools globally.
  • Benefits: Enjoy remote work options, a £2,000 learning budget, and health perks like gym discounts.
  • Why this job: Make a real impact on small businesses while growing in a diverse, collaborative environment.
  • Qualifications: Experience in scalable iOS applications, skilled in Swift, Combine, and SwiftUI required.
  • Other info: Embrace a culture that values diversity and offers career growth opportunities.

The predicted salary is between 36000 - 60000 £ per year.

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.

Why you’ll enjoy working at SumUp:

Be part of a company that values diversity and celebrates unique perspectives.

Work with a global team of skilled professionals in an environment that fosters collaboration, learning, and growth.

Be part of a global tribe building a banking solution from the ground up and delivering impactful solutions to the real-life problems of millions of SumUp merchants all over the world

Career growth and learning opportunities: We invest in your development through regular training, mentorship programs, SumUp University leadership cohort and a yearly learning budget (2,000 GBP)

Sabbatical program for tenured SumUppers

Health & wellness benefits: Stay fit and active with a 50% discount on gym memberships through Vitality Gym Partners and receive up to £40 per month in reimbursement for memberships or fitness centre.

Enrollment onto our virtual stock ownership program – you will own a stake in SumUp’s future success.

Competitive Insurance Cover with Vitality (including optical, dental)

Life Assurance cover with MetLife for 2x your salary

A Corporate pension scheme (qualifying earnings)

About SumUp

We believe in the everyday hero. Small business owners are at the heart of all we do, so we\’re creating tools that help them run their businesses. With a founder’s mentality and a \’team-first\’ attitude, our diverse teams across Europe, South America, and the United States work together to ensure that the small business owners we partner with 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, color, 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.

SumUp will not accept unsolicited resumes from any source other than directly from a candidate.

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.

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.

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(Senior) iOS Engineer - Global Bank employer: SumUp Inc.

At SumUp, we pride ourselves on being an exceptional employer that champions diversity and fosters a collaborative work culture. As a Senior iOS Engineer, you'll not only contribute to innovative banking solutions for small businesses but also benefit from extensive career growth opportunities, including mentorship programmes and a generous learning budget. With health and wellness perks, competitive insurance, and the chance to own a stake in our success, working at SumUp means being part of a mission-driven team that values your contributions and supports your professional journey.
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Contact Detail:

SumUp Inc. Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land (Senior) iOS Engineer - Global Bank

✨Tip Number 1

Familiarise yourself with the latest trends in mobile banking and iOS development. Understanding the current landscape will help you speak confidently about how your skills can contribute to SumUp's mission.

✨Tip Number 2

Network with current or former employees of SumUp on platforms like LinkedIn. Engaging with them can provide insights into the company culture and the specific challenges they face, which you can address in your discussions.

✨Tip Number 3

Prepare to discuss your experience with scalable iOS applications in detail. Be ready to share specific examples of how you've tackled complex technical challenges and contributed to architectural discussions in previous roles.

✨Tip Number 4

Showcase your passion for clean code and usability during interviews. Discuss your approach to writing maintainable code and how you ensure a seamless user experience, as these are key aspects of the role at SumUp.

We think you need these skills to ace (Senior) iOS Engineer - Global Bank

Proficiency in Swift, Combine, and SwiftUI
Experience in building and shipping scalable iOS applications
Strong understanding of software design patterns (e.g., MVVM, MVP)
Expertise in modular and scalable app architectures
Ability to write clean, maintainable, and high-quality code
Experience with testing frameworks and robust test strategies (unit, snapshot, XCUITest)
Strong debugging and code testing skills
Passion for usability and creating seamless user experiences
Product-focused mindset with a collaborative approach
Mentoring skills to guide junior engineers
Strong communication skills for cross-functional collaboration
Adaptability to tackle complex technical challenges

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience in iOS development, particularly with Swift, Combine, and SwiftUI. Emphasise any projects where you've built scalable applications or contributed to architectural discussions.

Craft a Compelling Cover Letter: In your cover letter, express your passion for empowering small businesses and how your skills align with SumUp's mission. Mention specific examples of how you've tackled complex technical challenges in previous roles.

Showcase Your Technical Skills: Include a section in your application that outlines your proficiency with software design patterns and testing frameworks. Highlight any experience you have with unit testing and robust test strategies, as these are crucial for the role.

Demonstrate Collaboration: Since the role involves working closely with product and design teams, provide examples of past collaborations. Discuss how you’ve contributed to user-friendly and visually appealing features in your previous projects.

How to prepare for a job interview at SumUp Inc.

✨Showcase Your Technical Skills

Be prepared to discuss your experience with Swift, Combine, and SwiftUI. Bring examples of scalable iOS applications you've built, and be ready to explain the architectural decisions you made during development.

✨Demonstrate Problem-Solving Abilities

Expect to tackle complex technical challenges during the interview. Practice explaining your thought process when debugging or optimising code, as this will showcase your analytical skills and ability to think on your feet.

✨Emphasise Collaboration

Since the role involves working closely with product and design teams, highlight your experience in cross-functional collaboration. Share specific examples of how you’ve contributed to team projects and how you value input from others.

✨Prepare for Cultural Fit Questions

SumUp values diversity and a team-first attitude. Be ready to discuss how your personal values align with their mission to empower small businesses, and share experiences that demonstrate your commitment to inclusivity and teamwork.

(Senior) iOS Engineer - Global Bank
SumUp Inc.
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  • (Senior) iOS Engineer - Global Bank

    London
    Full-Time
    36000 - 60000 £ / year (est.)

    Application deadline: 2027-07-15

  • S

    SumUp Inc.

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