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Android Developer - Merchant Contact Experience

Berlin · Mobile

Why SumUp?

We are the leading mobile point-of-sale (mPOS) company in Europe. We started out 6 years ago and built our payment service from scratch to shake up the industry and wake up the entrepreneur within anyone. We created a unique device that allows small merchants to accept card payments anywhere. Our vision as a global FinTech company is to build the first-ever global card acceptance brand, and we are well on our way as small businesses in over 31 countries around the world rely on SumUp to get paid.

We are looking for strong candidates that have an interest in helping us get there and building great products along the way. If you feel like one of these people, our office in Berlin is hiring for the position of Android Developer.

What you'll be doing in this position

You will take charge and be the owner of the SumUp Android mPOS app experiences related to merchants contacting SumUp and the underlying channel tools and services needed to power such experiences. You will be collaborating closely with the Merchant Contact Experience Team. Together with the Product Manager, you will set and implement the vision for the next evolution of in app support experiences. You will define the experiences that route customers to support, allow customers to self-serve or interact with support, view their support history. You will also interact with key operations stakeholders, product designers, developers (front-end, back-end, mobile), product managers, domain experts and other stakeholders who all contribute in creating an experience that is effortless for both our merchants and agents.

You will be a great fit if:

  • You are familiar with Java and Android development

  • You are curious about Kotlin

  • You know what to test, why to test it and how to write flexible tests that won't break

  • You care about user interaction and usability

  • You love coding and take the time to reflect on all aspects of your implementation, be it frameworks, languages or processes.

  • Your precise communication skills makes working with you effective and efficient

  • Technology excites you and you strive to learn something new on a daily basis

These skills will help you succeed in this role, but please consider applying even if you don't meet 100% of the requirements.


  • Budget for attending conferences and advancing your career. We encourage you to speak at conferences and give talks

  • We have a close, welcoming and international community. We get together regularly for brunches, cocktail nights, football and office parties

  • Free German & Yoga classes

  • Running & Soccer teams + Urban Sports Club membership (subsidised)

  • Semi-annual off-sites, where the tech teams from Berlin, Sofia, and São Paulo gather together. In the past we've gone to Bulgaria and Greece and a castle in the German countryside

  • SumUp Corporate Pension Scheme

  • All the startup swag you expect: kicker table, unlimited drinks & fruits

Regarding your application:

We're looking forward to meeting our next teammate! You'll be asked to provide the following information when you apply:

  • One of your favorite technical challenges you encountered in the last two years: what was it about, how you tackled it, and what you learned. Technical details encouraged!

Please provide your answers to these questions in English. We're an international company, and English is our business language!

If you want to know what it’s like to work at SumUp, check out our careers page at

We are looking forward to receiving your application!

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.