Back to all jobs

Qt Software Engineer

São Paulo · Engineering

We believe in the everyday hero. Those who have the courage to follow their passion, those who have the strength and determination to realize their dreams.

We believe that anyone should be able to start their own business. We provide small businesses with powerful, easy-to-use card readers and awesome customer support, so merchants can run their business and engage with their customers. We do so with genuine care for our merchants and love for our products. By taking the hassle out of getting paid, we enable small business owners to focus on what they love to do.

We are 1,400+ SumUpers in 12 offices around the globe - 700+ in Brazil only - and we are here to empower small merchants and help them thrive.

Know our Engineering Team 

As part of SumUp, you will develop state-of-the-art payment terminals and terminal accessories by working in a global hardware development team in order to architect, beautifully design, and certify payment and security specifications. In addition, you will contribute to the unique SumUp culture which is comprised of people who share the same vision.

As our Qt Engineer, you will: 

  • Design the graphic user interface of SumUp’s next-generation product

  • Define specification, implementation, and testing of the GUI on an embedded platform

  • Technical analysis, verification, and validation of the software

  • Code and architecture reviews to ensure the quality of implemented solutions

  • Bring your experience to develop software on embedded operating systems and bare-metal systems

  • Own the responsibility for your code quality, being supportive to improve the overall software development process

  • Be a  contributor to the C++/Qt engineering practice/team

  • Develop and launch new features together with your team 

  • Align work to an agile development process


  • Minimum 5 years of professional experience in software development

  • Enthusiastic and experienced on Qt /QML and C/C++

  • Ability to thrive in a dynamic work environment

  • Passionate and excited to tackle new challenges every day

  • Demonstrated working experience on a large codebase

  • Agile mindset with relevant track record

  • Must enjoy a team approach to initiatives with a diverse set of stakeholders

  • English fluency, as a team member of a global Qt practice group

  • DDD knowledge is a plus

Why you should join us

  • Be part of a company that lives and breathes to empower small merchants around the world

  • Have full autonomy (for real!) to propose, lead and implement changes that will up our game

  • Work in flexible hours 

  • Work in the coolest office around, in the heart of Pinheiros (São Paulo), close to the central station and main avenues

  • Have access to our all perks and benefits: healthcare for employees 100% paid by the company, dental assistance, private pension program, variable compensation/yearly bonus, transport voucher or parking space at the office building, meal/food voucher, Gympass, life insurance, barbershop and nail polish at the office, massage sessions, monthly parties at the office and more!

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.