Job Description

Nadia Sanok

Nadia Sanok


apply now

apply with


Krakow, Poland

Back-End Developer

Skelia invites a Back-End Developer (node.js) for long-term and full-time employment at our service centre in Krakow, Poland.


You will join a newly created extension team of our client Energy Lab ( Energy Lab offers professional sports testing and coaching in its labs, through apps and online platforms. Do you want to have a real impact on people’s lives? The mission of Energy Lab is to get as many people exercising as possible. Energy Lab is a part of the Golazo Group of Companies that organizes and markets major sports events internationally with activities in media and entertainment.


The aim is to inspire people to exercise every day. So if you’re looking for a value-led business and a job that can change your life and others, Energy Lab is the right place for you!


  •  Working closely in collaboration with the client’s team in order to ensure the highest quality of the final product
  •  Developing new features, designing and developing new solutions
  •  Troubleshooting and debugging applications
  •  Managing complete Azure environment
  •  Having a real impact on the future of Energy Lab’s products


Must have:

  • Profound knowledge of Node.js and Typescript
  • Profound knowledge of unit and integration testing in Node.js
  • Good knowledge of docker
  • Proficient understanding of code versioning tools (GIT)


Good to have:

  • Experience in working in a microservice environment
  • Experience with the test framework Mocha
  • Experience with implementing or using AMQP (e.g. RabbitMQ) in projects
  • Experience with creating GraphQL APIs and gRPC
  • Experience with Mongodb or other NoSql databases
  • Knowledge of bitbucket pipelines or configuring pipelines with yaml


Nice to have:

  • Experience with MS Azure
  •  Strong communication skills in English
  •  Strong analytical, organisational, problem-solving and time-management skills
  •  Collaborating across multiple teams to help define, scope, and implement high quality features
  •  A commitment to excellence, best practices, and the continuous improvement of our products, code base, processes, and tools

Skelia Offers

  • Wide range of benefits (private healthcare, sports card, cinema tickets, shopping & leisure vouchers, etc.)
  • Great coffee & fresh fruits
  • Company events
  • Referral program
  • Massage sessions


We have a very informal and flexible working environment at Skelia that is very different from a typical corporate one and we’re looking for someone who’ll enjoy it as much as we do. We’re all about giving and taking responsibility, working hard but also about enjoying working together and self-development. If you are smart, creative and for new challenges and you enjoy working with people – we’d love to hear from you!


Please don’t forget to include the following statement in your resume:

“Wyrażam zgodę na przetwarzanie moich danych osobowych dla potrzeb niezbędnych do realizacji procesu rekrutacji (zgodnie z Ustawą z dnia 29.08.1997 roku o Ochronie Danych Osobowych; tekst jednolity: Dz. U. z 2002r. Nr 101, poz. 926 ze zm.).”


“I hereby give consent for my personal data to be processed for the purposes of recruitment, in accordance with the Personal Data Protection Act dated 29.08.1997 (uniform text: Journal of Laws of the Republic of Poland 2002 No 101, item 926 with further amendments).”

Share this job

all positions