Fullstack Engineer

Sorry, this job was removed at 04:10 p.m. (CST) on Tuesday, May 20, 2025
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Berlin
In-Office
Fintech • Payments
SumUp. Big believers in small business.
The Role

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 in doing what they love. 

Team Description

In the Global Operations team, we prioritize digital support by creating an easy-to-use support funnel. This funnel allows customers to quickly find solutions to their problems through self-service options or educational content.

We are looking for a new (Senior) Fullstack Engineer who will support us in building and maintaining digital support features within the support funnel and collaborate with other Operations teams to ensure consistent APIs, WebSocket implementation, and AI-first experience. Working on integrating VOIP in the dashboard, maintaining our Support center, and refactoring it if necessary. The new team members will be cross-functional and consist of a Product Manager, Designers, Mobile engineers, Front and Back Engineers, and Engineering Manager working closely with different business units.

What you’ll be doing

  • Owning end-to-end development processes and supporting Front-End & back-end engineers.
  • Collaborating with the product team to gather requirements and design applications.
  • Writing code to create user interfaces in the dashboard, support center, and specifically in the support domain.
  • Writing unit test cases and testing the product to ensure functionality.
  • Configuring multiple A/B tests for features based on the product requirements.
  • Monitoring features; and setting up alerts for performance.
  • Ensuring design consistency during implementation.

You’ll be great for this role if you have

  • More than 4 years of experience as a Fullstack Engineer
  • Experience in Javascript (ReactJS Focus)
  • Relevant experience working with PostgreSQL, Docker, and Kubernetes
  • Experience with Continuous Integration and Deployment practices.
  • Familiarity with AWS or other cloud platforms.

It will be an awesome add

  • Knowledge of sentry for Front-End tracking.
  • Experience working with Golang
  • Knowledge of Honeycomb for real-time debugging and tracing.
  • Experience with Grafana for data visualization and monitoring.

Why you should join SumUp

  • Be part of a welcoming and international community of 3000+ people from over 50 nationalities across 12 global offices. 
  • Visa and relocation support for a smooth transition to living and working in Berlin
  • Budget for attending conferences and advancing your career. We encourage you to speak at conferences and give talks!
  • BVG Corporate Ticket
  • Regular knowledge-sharing and discussion sessions for the whole design team
  • SumUp Corporate Pension Scheme
  • Yoga classes

SumUp is an Equal Employment Opportunity employer that proudly pursues and hires a diverse workforce. SumUp does not make hiring or employment decisions based on 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.

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The Company
Boulder, CO
2,750 Employees
Year Founded: 2017

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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