JavaScript Developers Hiring Guide

When you're looking for the best JavaScript developers, what should you look for?

JavaScript is a scripting language that allows developers to add complex features to web pages in a simple and straightforward way. Whenever you see a site that does more than just lay flat on the page, chances are likely JavaScript is behind whatever is happening. Some of those things include:

  • Timely content updates
  • Interactive maps
  • Animated graphics
  • Scrolling video or images
  • Audio
  • Accordion menus
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The list of what JavaScript can add to a website goes on and on. This is the main draw of JavaScript—to evolve websites into boring, static pages and into exciting, interactive environments. Because of that, your business should consider JavaScript a must-have for website development. 

JavaScript is often considered one of the three most important building blocks for websites, which are:

  • HTML
  • CSS
  • JavaScript

With those 3 tools, you can build rich, dynamic websites that will keep customers coming back.

  • JavaScript Developers Hiring Guide 2

    Hiring Guide

  • JavaScript Developers Hiring Guide 3

    Interview Questions

  • JavaScript Developers Hiring Guide 4

    Job Description

JavaScript is one of the most popular programming languages in the world and has been around for over 25 years. First released on December 4, 1995, JavaScript was created as a just-in-time compiled, multi-paradigm language that supports event-driven, functional, and imperative programming styles. The JavaScript engines were originally limited to web browsers, but have since migrated to servers and applications. 

Although JavaScript shares some similarities to Java (such as syntax and standard libraries), the 2 languages are quite different. 

Back in the early days of the internet, web pages were all static, so they lacked any type of dynamic behavior once a page was loaded into the browser. It was then that the management of Netscape (one of the first graphical web browsers) decided to devise a new language that would extend the capabilities of theirs. In 1995, Netscape added a scripting language to the browser. This implementation was originally called LiveScript but was soon changed to JavaScript.

The language has evolved a lot since then. With modern JavaScript, the possibilities are almost endless. You can add features like this to your website:

  • Loading of new content without forcing a browser reload
  • Animations like fades, resizes, and moving
  • In-browser games
  • Media stream playback control
  • Popups
  • In-browser web form validation
  • Logging user data

Of course, JavaScript isn't limited to web pages. Your company can leverage this language for:

  • Mobile app development
  • Serverless websites
  • Progressive web applications
  • Embedded systems (like Drones)

And although JavaScript might be harder to learn than a language like Python, it's nowhere near the most challenging.

How difficult is it to find good JavaScript developers?

Since JavaScript has been around for some time, it's quite a common language among developers. And because JavaScript is so widely used by companies around the globe, you can be sure that JavaScript is used on a vast majority of websites. 

This, however, means that experienced JavaScript developers are in very high demand, so finding the best candidate can be a challenge. You must also take into consideration that, because of the skyrocketing demand for JavaScript developers, hiring the best of the best will come at a price. If you're serious about bringing your website up to modern standards, that should be a price you're willing to pay.

How to choose a JavaScript developer for your project

When scouting for a new JavaScript developer, you should make sure they have the following qualities:

  • They're experts with the language.
  • They have experience with the most popular JavaScript frameworks.
  • They understand JSON, jQuery, and Handlebars.
  • They have a solid grasp of Responsive Web Design.
  • They are passionate about the language and willing to continue their education.
  • They can follow standards.


To find the best JavaScript developers, you should take the time and carefully comb through the candidates. Make sure those at the top of the list are not only qualified for the task at hand but can work with a team and are adaptable when those inevitable changes in a project do arise.

What are the differences between Java and JavaScript?

JavaScript is a client-side and server-side scripting language that is inserted into HTML and understood by browsers, whereas Java is a complete programming language.

What are JavaScript data types?

  • Number
  • String
  • Boolean
  • Object
  • Undefined

Which is faster: JavaScript or ASP script?

JavaScript is faster because it’s a client-side language and doesn't require a web server for execution.

What is Negative Infinity?

Negative Infinity is a JavaScript number that is derived by dividing a negative number by zero.

What are undeclared and undefined variables?

An undeclared variable is a variable that doesn't exist in a program and isn’t declared.

An undefined variable is a variable that is declared, but not given a value.

We are looking for a JavaScript Developer responsible for extending our website functionality with various types of dynamic content, as well as producing web and mobile applications.

We are looking for highly skilled, enthusiastic engineers with experience designing and building interactive features for websites as well as exciting mobile and web applications with JavaScript.


  • Design and implement JavaScript web elements as well as web and mobile applications.
  • Analyze user requirements to help inform application design.
  • Ensure the feasibility of UI/UX designs and requirements.
  • Define application objectives and functionality.
  • Align application design with business goals and customer needs.
  • Develop, test, and debug software.
  • Producing detailed documentation.
  • Recommending changes to existing JavaScript.
  • Ensuring continuous professional self-development.

Skills And Qualifications

  • Degree in Computer Science or related field.
  • Experience with JavaScript, HTML, CSS, HTML5, UX, database structures, and statistical analyses.
  • Experience with JavaScript frameworks, such as Angular, jQuery, Vue, and Bootstrap.
  • Solid problem-solving skills.
  • Excellent written and verbal communication.
  • Good organizational skills.
  • Ability to work as part of a team.
  • Attention to detail.

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JavaScript Developers Hiring Guide 5

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