SumUp started conquering the world of small merchants with mPOS card acceptance solutions in 2012. Today we offer a comprehensive product portfolio including SumUp card & account, invoicing, online store & online payments, and more.

As part of our vision to become a truly global tech company, we are building out local, autonomous, cross-functional teams that can take an aspect of our product and perfect it from concept to execution. We are passionate about our product and the vision of bringing new payment solutions to small merchants.

Our Acquiring Squad, part of the Payments Tribe, is looking for a Backend Engineer. In this experienced team you will have the opportunity to contribute to the core of SumUp’s product ecosystem - payment processing - by ensuring that SumUp has the necessary tools & processes to enable our merchants to accept global and local card brands. We are building a new platform - it’s a truly exciting time to join.

What you'll do

• Design, implement, and iteratively improve backend services in Elixir
• Extend and maintain the core payments system, responsible for the transaction flow for different payment methods and written in Erlang and Elixir
• Participate in API design and implementation for both internal APIs and those exposed to our third-party integrators
• Help your team to deliver business value by taking decisions related to backend and actively participating in the product discussions
• Provide comprehensive documentation, good test coverage, and improve code quality
• Collaborate with other software developers, QA and DevOps engineers to ensure smooth deployment, continuous integration, and support for the software that we deliver
• Actively participate in code reviews with other software engineers

You’ll be great for this role if

• You have previous experience as a backend engineer
• You have relevant experience with Elixir and OTP (whether in a production environment or from pet projects) or willing to learn (Elixir experience is NOT mandatory)
• You have a good understanding of software architecture and application design
• You have experience with distributed and fault tolerant systems
• You have a passion for clean, maintainable and testable code
• You value team over individuals and autonomy within your team
• You are humble, transparent and enjoy working with the people around you
• You are proactive and able to thrive in a fast-paced, dynamic environment

Awesome if you

• Are active in Elixir community, contribute to open source or have personal projects
• Enjoy mentoring fellow engineers and love sharing knowledge
• Worked in an international, distributed team
• Have experience with Docker and/or Kubernetes
• Feel comfortable with Unix/Linux environments

Why you should join SumUp

• You’ll play a key role in a scale-up that in turn is part of a truly global team of 2000+ people from 60+ countries, spread across 3 continents.
• You'll have the opportunity to make an impact irrespective of your job description. You'll have the space to drive your career and take ownership of projects.
• You’ll receive 25 days’ paid leave, increasing with tenure, and paid vacation for certain occasions. Also, our favorite 1 month of paid Sabbatical vacation.
• You’ll receive an individual learning budget and can take up to 10 days educational leave to expand your skillset.
• You'd enjoy other great benefits such as additional health and life insurance, online fitness classes, subsidized Multisport card, Babbel language platform subscription, free shuttle buses from Joliot-Curie metro station, a long list of discounts and more.

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 business. With a founders 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 in 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.

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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.