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JavaScript developer builds digital products with the help of the JavaScript programming language. Initially, this language was invented to create the front end. Once this layer was ready, the developer had to ensure its compatibility with the back end. Today, JavaScript is used for building the back end as well. It’s equally efficient for all types of features: from the basic to advanced ones.

Scope of responsibilities of a JavaScript developer

Such a professional should be ready to complete the following tasks:

  • Build digital products from scratch, add new features to the already existing ones, and maintain them.
  • Create code and libraries that can be reused in the future.
  • Make sure the UI/UX design is technically feasible.
  • Optimize apps so that they work faster and become easy to scale.
  • Ensure that all the information that comes from end-users is validated before being submitted to the back end.

Which hard skills JavaScript developers are supposed to have?

These specialists need to match the following criteria:

  • Fluency in JavaScript.
  • Asynchronous programming skills.
  • Good command of JavaScript module loaders, such as Require.js and AMD.
  • Ability to use Node JS for the back end, when needed.
  • Experience in working with the Git version control system.
  • Proficiency in using the jQuery and ReactJS libraries.
  • Readiness to apply TypeScript to solve compatibility problems.
  • Understanding of web markup, including HTML5 and CSS3.
  • Familiarity with front-end build tools, such as Grunt and Gulp.js.
  • Knowledge of browser rendering behavior and performance.

A degree in engineering or computer science would be a big plus. will help you with hiring a JavaScript developer in Poland

If you need to find a JavaScript developer, our agency will save you a lot of time and effort. Submit a request to us. Find some time to discuss the specifics of your business and your project requirements with us. To find the best candidates for you, we’ll stick to this scheme:

  1. Compose a skills matrix to identify the traits and abilities of the perfect match for your vacancy.
  2. Identify the most efficient strategies and tools for searching for your new employee.
  3. Look for professionals with the right characteristics in our pool of talents. Place ads on third-party platforms.
  4. Pick the best professionals and forward them to you.

Our prices always remain affordable. We can find a developer with any level of expertise for you.

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