Cookies icon

This website uses cookies to ensure you get the best experience on our website.

Javascript Developer

Lublin, Warsaw, full-time/part-time (subject to discussion)



  • Developing our company's top product,
  • Cooperating with the creative team and all other stakeholders to ensure that project objectives are met as expected,
  • Implementing functionalities based on project the specification,
  • Maintaining compliance with architectural principles specified in the project,
  • Code refactoring and architecture improvements,
  • Finding optimal solutions independently,
  • Working in development teams to analyze requirements and create solutions,
  • Ability to stick to the deadlines,
  • Actively proposing new web solutions and frameworks in accordance with the project requirements and market trends,
  • Caring for the highest quality of code.

If you possess these:

  • 1+ year of experience with JavaScript – ES2015+
  • Being comfortable with HTML5 and CSS3,
  • Experience in developing web applications using React + Redux, Angular or another modern framework,
  • Experience with Node.js,
  • Working knowledge of backend techonologies(Node.js(Express) or .NET Framework),
  • Experience with Git,
  • Eagerness to learn and constantly improve yourself,
  • Practical knowledge of design patterns & the best practices - both front-end and back-end,
  • Positive attitude, Self-policing,
  • Good communication skills,
  • Intermediate English skills (at least B1) - both spoken and written.

Additional Assets:

  • Experience with Webpack,
  • Experience with SASS.

We can offer you:

  • Work in an experienced team with the use of the best practices (SOLID, Clean code),
  • Work-life balance - possibility of flexible working hours and home office,
  • Casual start-up atmosphere (If you want to listen to music while coding or relax during table tennis round, feel free :)) 
  • Flat structure, 
  • No dress code,
  • The best view from one of the highest viewpoints in the city, 
  • English classes with a native speaker and top class polish tutor during work hours, 
  • Chill room,
  • Company sponsored events, 
  • A transparent contract and comfortable employment model (you choose the type of contract), 
  • In the office to drink types of tea, coffee, Yerba mate chosen by you and teammates.


If you have the qualifications mentioned above and are interested in joining the team, send us your CV.


About JMMJ:

JMMJ has completed IT projects across Europe and North America. The firm was founded in 2008, and we are a Microsoft Certified Partner since 2009.