Node.js developer for sustainable start-up

Salary Competitive
Equity To be negotiated

Node.js developer for sustainable start-up

We are kleen hub, the future of reusable packaging. Our company has launched Denmark's first digital return system for food packaging and coffee cups, already offered by 150 partners and used by more than 10.000 people.

We are working on a new, revolutionary product that aspires to become the new standard in the reusable packaging industry. For this reason, we are looking for a Node.js developer to develop the server side of the application, designing the application logic and maintaining the databases. You will strive to achieve and maintain high performance and responsiveness, prioritizing the responsiveness to requests from the front-end above all else.

While the front-end elements will be developed by your coworkers from another team, you will be responsible for their integration into the overall project. Therefore, you need to be comfortable with being in charge of the scrum process and to dictate the rhythm of both front-end and back-end development together with our tech lead in Copenhagen.

The main company is based in Copenhagen. However, we are looking for a full-remote developer to join the team.

We offer a competitive salary as well as possibility to participate in our warrants program and own shares in the company.


  • Develop the back-end software, maintain and update the existing code;

  • Design and develop highly reliable, fault-tolerant, and scalable production systems

  • Perform and manage analysis, design, development, prototyping, unit testing and maintenance activities

  • Deploy and develop on cloud infrastructure using modern scalable environment

  • Manage and update the Scrum workflow ;

  • Assist with creation and development of feature requirements;

  • Report issues with the code and improve upon them.


  • 5+ years of programming experience;

  • 3+ years of TypeScript and Node.js experience;

  • Experience with REST, NestJS, MySQL, MongoDb, Redis;

  • Experience with Git, Jira

  • Familiarity with Kubernetes, Docker and AWS Infrastructure;

  • Understanding of asynchronous development and data security principles;

  • Ability to write readable, well-documented code;

  • Self-motivation, goal-oriented approach;

  • Intermediate (or higher) English skills.

For more information or questions please contact us at

Perks and benefits

This job comes with several perks and benefits

Flexible working hours
Flexible working hours

Time is precious. Make it count. Morning person or night owl, this job is for you.

Free friday beers
Free friday beers

Friday is something special, let's enjoy a beer together.

Skill development
Skill development

We want to take you from good to great.

Remote work allowed
Remote work allowed

You know how you perform best. Work from your couch, your favorite cafe or abroad when you feel like it.

Unlimited holiday
Unlimited holiday

Take time to relax and reboot when you need it.

Work life balance
Work life balance

Carve out time for your kids, friends and personal cider projects.

See all 8 benefits

Working at
kleen hub

We are fighting single-use because we realized that the problem was not just plastic, but more in general our habit with single-use items. The restaurant and cafe sector uses large amounts of single-use containers that cause a waste of resources and a threat to the environment. We focus on solving this issue by providing reusable stainless steel food boxes and cups to restaurants and cafes and charge them by usage. Thanks to our free mobile app for consumers, we make sure that the product's circulation takes place smoothly by keeping track of the boxes and cups and ensuring that they are returned into circulation.

Read more about kleen hub

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