React Developer


Hi! We are SIENN – an international softwarehouse. We specialize ourselves in development and implementation of software products for companies mainly from Europe, and the United States. We are a group of enthusiasts – engineers whose passion is to create useful IT solutions.

Job Details

We are SIENN Living Online Technology! Let’s grow together!
Do you want to become a part of something new? We are looking for software enthusiasts, who are open to new challenges and new technologies. If you want to work in international team and have fun – join us!


You will be working with professionals who are focused on delivering usable software that helps to increase productivity and optimize business processes. The project concerns the development of an application for building piping and instrumentation diagrams (P&ID). The application integrates with various other applications ( like app for management of change -MOC). You will be part of an agile team using Scrum to manage their products.

You are an ideal candidate if you:

  • Are equally comfortable with core JavaScript as with using existing frameworks such as ReactJS
  • Understand browser concepts like DOM, CSS (Experience with Less is a plus)
  • Have experience with JS testing frameworks: Selenium, Jasmine
  • Are versatile with JavaScript dev infrastructure tooling: Gulp, Webpack
  • Have experience with Git (Github, Bitbucket)
  • Have good English communication skills ( minimum B2)
  • Have the ability to understand business requirements and translate them into technical requirements
  • Are committed to collaborative problem solving and good design 

Extra points for:

  •  General back-end experience
  • Being familiar with Atlassian Jira
  • Experience with LESS
  • Work in an Agile environment

What we offer:

  • Using modern tools and technologies
  • Working agile (Agile / Scrum)
  • International training and certification (Microsoft MCP)
  • Constant personal growth (additional leave for training, conferences)
  • Attractive conditions of employment (contract of employment or B2B)
  • Free English lessons, Medical package and Multisport card

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    Need Help ?

    Any questions? Please do not hesitate to contact me

    Katarzyna Skowronek

    HR Specialist

    +48 889 783 562