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Senior Backend Engineer (NodeJS) - Merchant Growth

Copenhagen, Denmark · Engineering

Senior Backend Engineer (NodeJS)

Our team based in Copenhagen is looking for a Backend Engineer. In this role, you’ll contribute to our ambitious goals by making it extremely simple for merchants all over the world to use our invoicing and accounting products. You’ll work on our core services powering multiple client applications that help small businesses thrive. You’ll be owning and managing the development life cycle from coding and testing to deploying into production and observing the value delivered to customers. A few of the technologies we're leveraging at Debitoor/SumUp include JavaScript, Node.js, MongoDB, Rabbitmq, AWS, Unit/Integration testing (mocha, sinon, chai, nock), RESTful Web API, OpenAPI, Git, GitHub, Heroku, Docker, CircleCI.

What you’ll do

  • Work in a cross-functional team and ship code daily.

  • Collaborate with product managers and the support team to build new features for our users to help them grow their businesses.

  • Design easy to use APIs that make sense.

  • Develop robust and maintainable microservices.

  • Keep existing microservices up to date in a changing environment.

  • Refine the full stack, from CI/CD tooling, to test automation, building features, running experiments, and monitoring and operations.

  • Push projects forward, while validating and communicating your ideas with the team.

  • Help us develop our open-source projects and culture.

  • Assist in hiring and recruiting efforts to continue to build the team.

You’ll be great for this role if

  • You 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 for maintainable and clean code, but also know when to be pragmatic and make your "shortcuts" easy to delete in a crunch.

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

  • You have a proactive attitude and a product mindset − you own what you build.

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

  • You contribute to open source projects.

  • You care deeply about automation and CI/CD.

Your profile

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

  • Strong programming foundation and software development experience

  • Experience with building complex systems

  • Understanding of API performance and optimisation techniques

  • Exposure to debugging, monitoring and optimising performance in Node

  • Command line fundamentals (git, ssh, editing a file on a remote server, reading logs, etc.)

  • 5+ years of relevant professional experience

  • Experience with incremental software development, with focus on fast product delivery

  • Experience with invoicing and accounting and have an understanding of their complexities

  • Fluency in English - you'll be part of a truly global company!

Why you should join SumUp

  • You’ll be working on a product with worldwide reach to millions of customers in 50+ countries in a fast growing business group

  • We have a beautiful office location in central Copenhagen

  • We have a state-of-the-art software development process and a DNA geared on shipping great software products

  • You’ll join a passionate and talented group of people, united by a shared mission

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 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 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, colour, 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.