Principal JavaScript Engineer



  • JavaScript (ES2015+), HTML, CSS
  • React.js (React Native a bonus)
  • Node
  • Front to back JavaScript application development experience
  • Understanding of the JavaScript application lifecycle
  • Git fluency
  • Strong understanding of branching strategies
  • Best practices in code reviewing
  • Confidence with continuous integration, deployment and delivery
  • Understanding of usability, security and performance in front end applications
  • Excellent communication skills
  • Ability to mentor and influence team members
  • Enthusiasm to learn and collaborate


  • As a Principal JavaScript Engineer in our newly established operation in Sofia you will have the chance to work on a strategic replatforming project converting our web and native app products into a single shared code base using Node, GraphQL, React and React Native. You will work closely with our agile teams made up of cross-functional, autonomous engineers and you will come in touch with some pretty cutting-edge stuff.
  • You’re a true engineer with a passion for well-crafted and tested code considering everything from architecture and security to performance, evidenced by a healthy GitHub account (maybe you contribute to open source too). You understand agile methodologies, are used to pair programming and enjoy collaboration. You’re a leader who sets high standards and encourages his peers to improve constantly.
  • You have a continuous improvement mindset and are proactive in driving positive change, encouraging those around you to do the same. You are an advocate for the product you work on and have a genuine interest in it. Outside of the office you love learning new development languages and skills and work on interesting personal projects. You love engineering and constantly want to learn more.
  • More than just pure technical skills, you’ll have a desire to work on our ecosystem and tooling, encouraging the engineers to deliver their best work. You’ll want to create a destination that attracts like-minded engineers to come and work here too.