Location: Cologne, office first

About the team

The SumUp Point-of-Sale solution is used by cafes, shops, bars, hair salons, and others to run and grow their business. It offers features such as product catalog, inventory management, business analytics, compliance support, loyalty features, and more.

The POS is part of the SumUp SuperApp that comes with our own register hardware, or can be used on tablet & phone devices.

As a Senior Android Developer in POS you will join a cross-functional team and work alongside a Product Manager, Product Designer, Senior iOS Developer, Android Developer and a Frontend Developer. The team is responsible for the item catalog value stream - a core component serving the needs of almost all teams at SumUp.

About the role

We are moving towards Kotlin Multiplatform with a hybrid strategy to support both Android and iOS and as a Senior Android Developer the expectation is that you will learn this technology and help the team refine and adopt it.

On a daily basis you will be building new features for the item catalog within the SumUp SuperApp, increasing the expertise of the team on Kotlin Multiplatform, and you will be helping improve the architecture of the application.

To be successful in this role you should be someone who cares about user interaction, usability, and have attention to detail. Your communication is structured and precise, and you thrive when collaborating cross-functionally.

The role is based on-site in our office in Berlin. We believe in the power of face-to-face conversations that happen organically when working next to one another.

What you’ll do

• Own and guide the evolution of the product and engineering, with total freedom to propose and be a part of changes on a daily basis
• Participate in the constant construction and improvement of our unified Android app providing well-designed solutions to an App distributed to 60+ countries
• Provide thoughtful and comprehensive documentation and tests for your features before shipping them
• Collaborate with Software, QA, Security, and DevOps engineers to ensure smooth deliveries with high levels of security and quality
• Coach and mentor other engineers to increase their abilities
• Actively provide code review feedback to other software engineers, considering both style and implementation
• Interact daily with our different areas and tribes, bringing technical perspective for each new feature, but also taking into account the business value added to it

You'll be great for this position if:

• You're comfortable with Kotlin and the Android framework.
• You have good knowledge of architectural design patterns such as MVVM and MVP, and experience ensuring modularized and scalable app architecture.
• You know what to test, why to test it, and how to write flexible tests that won't break.
• You have a good knowledge of reactive programming (flow, Coroutines and concurrency in general).
• You strive for clean code, but also know how to be pragmatic when needed.
• You have a desire to do a multi-platform development with Kotlin Multiplatform .

Why you should join SumUp

• The opportunity to work on large scale fintech products used by millions of small businesses around the world
• A dedicated annual Learning & Development budget for attending conferences and/or advancing your career through further education
• Enrollment onto our virtual stock ownership program - you will own a stake in SumUp’s future success
• A corporate pension scheme 
• 28 days’ paid leave
• You’ll attend global offsites and/or hackathons.
• You'd enjoy other great benefits such as Urban Sports Club subsidy, Kita placement assistance, subsidized office lunches and other location-tailored benefits, Babbel language platform subscription and more!

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.

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.