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Senior Frontend Engineer

São Paulo · Engineering

Know more about SumUp

At SumUp, we are driven to empower small businesses across the globe by de-hassling their lives and helping them to succeed. 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. To get there, we are putting together an awesome team that is committed to one another and to our merchants.

Our boldness, startup mindset, empathy and love for product foster a creative environment for our employees. We value an entrepreneurial spirit and seek to build lasting relationships among our employees. We know that a diverse and inclusive workforce keeps us competitive and provides opportunities for all. We believe that together we can help small businesses grow.

Your impact at SumUp

SumUp just raised near BRL 1.5 billion in our latest investment round. We are now centered on creating new and comprehensive financial services from scratch, focused on changing the lives of more than 40 million low income, unbanked Brazilians. As a Frontend Engineer, you will be part of a cross-functional agile squad, helping us to build out our new internal products. This involves working closely to Product Designers and Engineers to ensure usability, accessibility and beauty of our products.

Your role and responsibilities

In this role, you'll work with members of a cross-functional team to build tools that help engineers deliver their features with speed and quality. The work you do will impact engineers working on the web across different products and applications across the company. You'll collaborate with peers in Product, Design and Engineering to get the big picture and work with other engineers to build tools, integrations, libraries, and infrastructure that support both the technical and product strategy of the company.

On the tech side, we work on a number of different projects that span technologies, systems, and processes. A few of the technologies we're leveraging at SumUp include React, Webpack, GraphQL, Apollo, Jest, Enzyme, Storybook, Next.js, Emotion, NodeJS, and Docker.

You'll fit in perfectly to our team if:

Please consider applying even if you don't meet 100% of requirements. This profile should give you an idea of the kind of skills that will help you succeed in this role

  • You not only love coding, but also take the time to reflect on the benefits and drawbacks of your tools, be they frameworks, languages, or processes.

  • You strive to balance the needs of the business with sustainable technical solutions.

  • You know what to test, why to test it, and how to write meaningful tests.

  • You have experience with or interest in Functional Programming techniques.

  • You know how to make pragmatic programming decisions in a complex codebase.

  • You love to mentor others and share your knowledge, and are also open to learning something from people with less experience than you.

  • You find it exciting to work in a high-growth environment with both immediate challenges as well as massive potential.

  • You care about user interaction, performance, usability, and of course – making the interface beautiful and accessible.

  • In general, technology excites you and you strive to learn something on a daily basis!

Your profile

  • Deep technical knowledge of the web stack, as well as how to apply general software engineering principles to the web context

  • Strong understanding of testing and the tools surrounding testing on the web

  • Ability to anticipate how developers are likely to use the tools you build, potential issues with your documentation, APIs, or abstractions.

  • Strongly preferred: Meaningful experience in DevOps (e.g. Docker, Kubernetes, Jenkins, AWS, etc.) and/or meaningful experience in backend technologies (e.g. backend programming languages, databases, server-side performance, etc.) or willingness to learn.


  • A dedicated annual budget for attending conferences and advancing your career through further education. We encourage you to speak at conferences and give talks.

  • Weekly Lunch and Learn session, where the local engineering team exchanges ideas over company-sponsored lunch.

  • Dedicated time every week for side-projects and open source initiatives.

  • Semi-annual offsites, where the engineering teams from Berlin, Cologne, Sofia, and São Paulo gather together.

  • We have a close, welcoming and international community. We get together regularly for dinners, drinks, football, office events, training, yoga classes and much more.

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!