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Senior Backend Engineer at Peakon

At some companies you can feel the momentum building. People are engaged, they're approaching their work with energy, enthusiasm and resilience. Being part of the organisation becomes part of your own identity.

At others, it feels impossible to get everyone pulling in the same direction. People lose sight of the company's purpose, they start looking out only for themselves – or elsewhere for new opportunities.

We started Peakon to help companies around the world build better workplaces. Where employees know they're listened to, managers learn from their own decisions and develop as leaders, and entire organisations see a step-change in what they can achieve.

Trust and transparency guide everything we do. At Peakon you’ll find a transparent salary model, unlimited vacation, minimal hierarchy, and maximum freedom to develop and execute your own ideas. Our style of collaboration is based on honesty and friendship, and we always love making new friends…



You are an engineer at heart, who loves to tinker and build new products. You stay up to date on the latest technology trends, and are able to evaluate the feasibility of new technologies for the problem you are trying to solve.

You have a passion for building great products for end users, experience in running and maintaining a large scale web application, and have a good understanding of agile product development processes and what it takes to bring a product from idea into the hands of customers. You are good at breaking down problems and prioritizing the development effort, and have an understanding of the tradeoffs in developing a quality application while supporting the needs of a fast growing business.

You are looking for an opportunity to grow your career in a startup and help define and shape the engineering team and the technology it depends on.



As the Peakon engineering team grows, we are looking for an experienced backend engineer to be part of and lead our technical efforts. As a Senior Backend Engineer, you will be working as an senior backend developer to design and develop the more complex features of the Peakon platform. You will also be a key contributor in technical and architectural discussions, and work closely with our CTO and other leaders to develop the technical roadmap.

You will spend a significant part of your time mentoring other team members in designing and implementing new features, through f.ex. code reviews and pair programming.

As a result we'd ideally like this role to be based in Copenhagen alongside the Core of our Engineering Team, however we'd also consider Remote work within the EU.



Our ideal candidate has...

  • 10+ years of working as a Backend Engineer
  • Intimate knowledge of web technologies like JavaScript, REST, JSON, CSS, HTML etc
  • Experience running and maintaining large scale web applications
  • Experience designing and implementing complex web applications
  • Experience working with relational databases like PostgreSQL or MySQL
  • Detail-oriented, focusing on writing maintainable code of high quality
  • A product mindset - enjoys experimenting to find innovative solutions to customer challenges
  • Believes in and practices automated testing at all levels
  • Values developer productivity, and relies on continuous integration and automation to iterate faster
  • Is a team player who strive to better not only themselves, but also everyone around them
  • Experience mentoring and giving constructive feedback to junior engineers on their work

We welcome your application even if you do not meet all of the criteria listed above, but are excited about the challenge of mastering this role. We know that skills are not static and growth is continuous, so we are excited to help you take your career to the next level at Peakon.


We make it a priority to stay on the cutting edge of tech. We are highly motivated by learning and growing in our roles, and constantly evolving is a key part of that.

The tech stack of Peakon centers around Javascript, with Node.js on the server and React on the frontend. We believe there is great value in a shared toolchain across the stack, enabling engineers to work on all parts of the system. Some tasks are better solved with different tools, and thus we use f.ex. Python for the data science parts of the system.

We are big fans of new JavaScript language features like async/await, and have made it a priority to stay up to date with the latest versions of Node. We are primarily hosted on Heroku and AWS, with an increasing number of our services moving to the latter. We use PostgreSQL (through RDS), Redis and ElasticSearch for storage.

We rely heavily on automated testing on all levels of the application, with thousands of tests checking every commit to our code base. We use CircleCI for hosted continuous integration to make sure our most recent changes are always available to test, and we deploy code to our production environment on a daily basis.


  • Unlimited holiday
  • Subsidised lunch everyday
  • Flexible working
  • Company wide trips
  • Choice of hardware
  • Flexible travel policy
  • Pension

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