Hire JavaScript Developers

Looking to hire JavaScript developers to build a dynamic, performance-oriented web and mobile app? Your hunt ends here. We at JayDevs offer a strong force of dedicated JavaScript development teams with a wide range of talents to automate any business process.


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JayDevs empowers clients with dedicated JavaScript developers comprising of carefully picked professionals. Our mission is to provide clients with IT professionals quicker and more efficiently, while simultaneously helping them build robust software that yields business results.

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Ultimate Guide to Hire JavaScript Developers

Hiring a JavaScript developer takes work and effort. Finding the best JavaScript developers is even more challenging because of the high competition in the technology industry. JavaScript is considered the most popular programming language in terms of its general use in development. Therefore, the market is filled with developers of different levels: experts who know how to handle this technology up and down to beginners who have just taken courses.

86% of HR professionals need help finding a developer. Choosing the right JavaScript programmer is critical to developing high-quality solutions for your company. On the other hand, if you choose the wrong person, your project could fall through, and you could suffer a loss.

How can you ensure that you hire a JavaScript developer who belongs to a group of experts and not a group of newbies who have just taken courses? This post will help you hire the best JavaScript developers for your business project.

What Is JavaScript?

JavaScript is a programming language that allows developers to create and control dynamic website content. It will enable complex functions to be added to any Web page. It also allows users to interact with a web page. JavaScript provides interactivity to what would otherwise be a static web page.

For example, every time you fill out an interactive form on the web, JavaScript runs in the background. But that’s not all. You probably noticed how the timeline automatically updates to show fresh content when you’ve used Facebook. That’s thanks to JavaScript. It also features that control slideshows, animations, videos, autocorrect, and auto-complete suggestions.

What Does a JavaScript Developer Do?

The JavaScript developer is responsible for implementing the external logic that defines the behavior of visual elements and creates interactive user interfaces for websites and web applications.

JavaScript developers also provide capabilities for developing the entire stack. Typically, JavaScript works on the visible side of a website. With the release of the Node.js framework for servers, programmers can also do back-end work. Thus, it is now possible to write reasonably heavy server-side code in JS, building the logic and behavior of the site.

In addition, JavaScript developers are usually familiar with numerous technologies and frameworks that help optimize the language, such as the React library or the Vue.js framework.

Why Use JavaScript in 2023?

According to the PYPL index (Programming Language Popularity Index), JavaScript is the third most popular language on Google. Furthermore, a Statista study shows that JavaScript is the most popular language globally, given that more than 63% of respondents use it.

Not by chance, JS is in the first position:

  • Flexibility. Created products are reusable and not platform-specific.
  • Rich interface. New functions are permanently developed for JS; many libraries and APIs exist.
  • Versatility. Works well with other programming languages. Supports all operating systems, browsers, and mobile devices.

Technologies that can replace JavaScript are slowly beginning to appear. However, it will be long before these technologies reach a sufficient level of development and learn everything JavaScript can do. Nevertheless, many companies have invested and continue investing a lot of money in JavaScript-compatible engines, making the language more and more effective and relevant.

Pros and Cons of JavaScript

Like any other technology, JavaScript has advantages and disadvantages. But when it comes to JavaScript, the disadvantages are covered by its benefits. So, let’s take a closer look at them.

Pros of JavaScript

1. Speed – JavaScript is an “interpreted” language; it reduces the time it takes other programming languages, such as Java, to compile. JavaScript is also swift because it often runs directly in the client’s browser.

2. Ease of development – JavaScript is easy to understand and learn. Its structure is simple for users and developers alike. As a result, applications are easily updated and developed according to user needs.

3. Popularity – Almost all modern browsers support JavaScript. Many well-known companies, including Google, Amazon, PayPal, etc., use it as a development tool. In addition, StackOverflow and GitHub show a growing number of projects with JavaScript, and their popularity is only expected to grow.

4. Memory Resources – JavaScript requires relatively tiny and light memory resources. Since it doesn’t require a lot of space, using RAM will be easier. So, JavaScript is very suitable for applications that are used daily.

5. Compatibility – JavaScript combines well with other programming languages, so it is preferred in developing many applications. It can be embedded in any web page or inside a script of another programming language.

6. Extended functionality – Developers can extend the functionality of web pages by writing JavaScript snippets for third-party add-ons such as Greasemonkey (a Mozilla Firefox extension)

Cons of JavaScript development

1. Security – JavaScript code is viewable by the user so that others can use it for malicious purposes. For example, using source code without authentication or putting code on a site compromises data security. Therefore, some applications created using JavaScript are not critical and essential, such as mobile banking applications or applications requiring password entry.

2. Copying Individuality – This point follows from the first. Because of client-side code execution, there is a risk of your site being copied by competitors. As a result, you risk losing your identity. This disadvantage is especially relevant for an environment such as e-commerce.

3. Browser support – different browsers sometimes interpret JavaScript code differently. You don’t have to worry about this as long as JavaScript developers test their script in all major browsers.

What Is JavaScript Used For?

JavaScript is used to create websites and web applications. However, JavaScript powers about 95% of all websites and has become an increasingly common solution in mobile applications. All thanks to tools like the React Native framework, which allows cross-platform iOS and Android apps to be developed with JavaScript.

Here are some basic things that JavaScript developers create:

  1. Adding interactivity and dynamic content. For example, show or hide additional information at the click of a button, play audio and video on a web page, display animations, etc.
  2. Creating web and mobile apps, such as Netflix and Uber
  3. Creating games that work inside the browser, both 2D and 3D
  4. Creating stable web servers and server applications using Node.js

How to Hire the Right JavaScript Developer?

Have you already started the project, or are you starting from scratch?

If you’ve already started a project, figuring out what you’re looking for is easier. You’ve already decided what technologies and frameworks you need, so you just need to find the best developer with those skills. Then, you can easily list the requirements and determine who is the best fit for your project.

However, if you haven’t made those decisions and are starting from scratch, you must determine how you want to develop your project. If you’re unfamiliar with JavaScript, you’ll have to research before deciding on the languages, libraries, and frameworks you want to use in your project. You should familiarize yourself with their advantages and limitations, research which technology stacks are trending, or ask someone for advice. The main thing is to understand what problems each technology solves and choose the ones that will help you create the product you want.

Front-end, Back-end, and Full-stack JavaScript developer?

Today, there are three types of JavaScript developers: front-end, back-end, and full-stack.

A front-end JS developer is a specialist responsible for processing data into a graphic user interface. He creates what a user sees in the browser and interacts with.

A back-end JS developer is a specialist who handles the server part of the project. In addition, he creates components and functions that are available for a user through the interface.

A full-stack JS developer is a broad specialist who can create application architecture and its user interface.

When to choose a front-end JavaScript developer?

Front-end developers ensure your site looks and functions how you want it to. They use CSS, HTML, and JavaScript technologies to create websites and applications.

Whether you want a site with static content, a basic contact form, or a fully interactive user interface, you can rely on a front-end developer.

Here are some responsibilities of frontend JS developers:

  • Development of front-end project from scratch;
  • Design of user interfaces;
  • Cross-browser and adaptive HTML5/CSS3 layout;
  • Collaboration with back-end developers while creating RESTful API.

When to choose a back-end Javascript developer?

Back-end developers are responsible for databases and APIs. Their focus is not on presentation but on functions on the server. Don’t expect them to draw or design; that’s not their job. However, you already have a front-end developer who has done the custom part of the project. In that case, the back-end developer will connect the data to the front-end.

Responsibilities of back-end JS developers:

  • Development of business logic and back and system for product support;
  • Work with databases with the help of DBMS;
  • Integration with external services;
  • Testing and debugging of application components.

When to choose a full-stack developer?

Consider hiring a full-stack JavaScript developer to build an app or website from scratch. They will do both front-end and back-end development and should have extensive knowledge and experience. Although full-stack developers know both parts of the stack, that doesn’t necessarily mean they are experts in any one of them.

Responsibilities of full-stack JS developers: Mix of back-end and full-stack duties.

In-house, freelance, or hire a dedicated JavaScript developer?

Hiring an in-house JavaScript developer is more expensive but has several advantages. First, you can control all the progress physically and communicate without any problems.

If you are considering hiring a freelance JavaScript developer, this model has pros and cons but can be risky. They may leave the project, it may be challenging to manage their work, or they may not meet deadlines. Still, hiring an in-house JavaScript developer is unnecessary if your project is small or you need to fix a few minor bugs. It’s cheaper to hire JavaScript freelancers, and there are many platforms where you can find them.

There are many options for hiring JavaScript developers – and there are. You can spend days scanning lists of people, checking rates, comparing requirements, and bypassing scammers. And then, when you think you’ve found the right person, they’re not who you were looking for. And so you’re back to the beginning.

But it doesn’t have to be that way.

A third option is to hire a JavaScript programmer from a software development company. A dedicated software development company provides the right remote developer for you and your project. The company and you have confidence in each other through a contract and NDA (Non-Disclosure Agreement). If you hire dedicated JavaScript developers from the company, they will help you develop and support the product. Hiring dedicated developers is ideal for you when your project is large, or functions are complicated. Quality is critical; you don’t have enough money or time to hire an in-house team.

What Skills Do JavaScript Developers Need?

Determining what skills a good JavaScript developer should have takes time and effort. Especially as we mentioned above, you’re just starting a new project. When looking for JavaScript engineers, you can get lost in the number of requirements, skills, databases, and languages.

We’ve carefully structured the information below to help you understand the basic skills.

Front-end JavaScript Developer Skills

  • Fluency in HTML and CSS; 
  • Understanding of CSS preprocessors: Sass, Less, Stylus, etc.;
  • Ability to work with Webpack module bundler, understanding of Babel transpiler working principles;
  • Knowledge and working experience with popular frameworks and libraries: Angular, React, Nodejs, Vue.js, etc.;
  • Experience or work with version control systems and repositories: Git, GitHub;
  • Experience in working with databases and knowledge of query languages: SQL, MySql, NoSQL, MongoDB, etc.;
  • Use of programming patterns: MVC, MVP, MVVM;
  • The ability to work with image editors: Photoshop, Illustrator, etc., is an advantage.

Skills for Back-end JavaScript Developers

Back-end development often consists of three main parts: server, application, and database. As a result, such a specialist should have knowledge and experience in Node.js (the primary server platform that uses JavaScript) and various databases: SQL and NoSQL.

In addition to that, basic technical skills include:

  • Knowledge of web servers: Nginx, Apache, IIS;
  • Ability to work with version control systems: Git;
  • Knowledge of HTML and CSS – for better understanding and communication with interface team members; 
  • Knowledge of Windows Server, macOS X, Linux, and other operating systems;
  • Knowledge of API (REST, SOAP) – less often;
  • Unit test writing skills.

Skills for Full-Stack JavaScript Developers

Of course, a full-stack developer is unlikely to have all of the mentioned frontend and backend skills. Moreover, the knowledge of both skill sets is usually less deep than that of the pure backend or frontend JavaScript developers.

Development of internal and external parts of a website or an application means that a JS developer should at least possess the following skills:

  • Fundamental understanding of JavaScript;
  • Knowledge of Node.js; 
  • Knowledge of HTML5 and CSS3 interface technologies; 
  • Knowledge of either of the front-end frameworks: Angular, React, etc.;
  • Knowledge of either of the back-end frameworks: Express.js, Nest.js;
  • Knowledge of one of the further mentioned databases: Oracle, MongoDB, SQLServer, and Redis;
  • Understanding of API testing tools;
  • Unit and End-to-End testing. 

JavaScript libraries every developer needs to know 

JavaScript libraries – functions a developer can reuse or change when developing a website, application, etc. Libraries considerably simplify the life of a developer by saving time in all development stages. They also reduce the jumper of potential code mistakes. Therefore, the skill of interacting with libraries is one of the must-have skills a developer should have. 

We mapped out the libraries to the potential objectives of your project:

The table lists only the most frequent use cases and examples of the libraries. Your case might be different. Visit Github to familiarize yourself with the list of additional libraries.

JavaScript Developer Job Description Template

Your job description for hiring JavaScript programmers should be written in a way that attracts candidates to your business.

The job description should consist of six main sections:

General information about the company: Explain what your company does, its purpose, and its goals.

Project context: Have you already started working on a project or starting from scratch? Briefly describe the work, the outcome you want to achieve, and the services you seek.

Project Duration: Indicate whether it will be a small or large project.

Roles and Responsibilities: List daily responsibilities the developer will be required to perform on your project.

Skills and Qualifications: List the required skills and qualifications you would like to see in a JavaScript developer.

Budget: define an approximate budget. Note your preferred payment model.

How Much Does it Cost to Hire JS Developers?

Finding talented candidates to stay within the budget should also be considered when choosing a developer or a development team. 

We collected data on the annual salaries of JavaScript developers depending on the level of seniority and country of residence from Payscale, Glassdoor, Indeed, and Salaryexplorer. Obtained results are specified below: 

The average salary for a senior JavaScript developer is $150,100 annually in the United States. At the same time, the average salary of senior JavaScript developers in Latin America is currently around $78,200. This price difference is due to the different economies in the US and Latin America. Therefore, offshore software developers’ costs are much lower than hiring full-time American professionals.

Because of economic differences, Eastern Europe has rates similar to Latin America’s. For example, look at salaries in Eastern and Northern Europe. In that case, the data shows that an average senior JavaScript developer costs about $65,000.

Why Hire a JavaScript Developer with JayDevs?

You want to save time looking for JavaScript engineers. We understand that. That’s why we’ve done all the screening work for you. Jaydevs will match you with the right developer in 24 hours or less. We can assist in sourcing the right JavaScript developers for hire who meet every requirement.

JayDevs’ JavaScript developers are pre-screened, interviewed, and trained to become true software professionals.

At JayDevs, we recruit developers who demonstrate tremendous potential or exceptional skill. We then take their skills and potential and polish them even further.

By partnering with JayDevs, you can take advantage of experienced in-house developers, reduce the cost of the traditional hiring process, and save time.

Interested? Tell us about your project so we can get to work!

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Frequently Asked Questions

How can JayDevs help me hire a JavaScript developer?

JayDevs removes many of the barriers of the traditional hiring process and makes it easier for companies to hire talented JavaScript developers. We focus on the needs of your business and then search for suitable candidates that will interest you and meet all your requirements.

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Are JavaScript developers in demand?

According to the PYPL, JavaScript ranks third among all programming languages searched for on Google. Statista shows that most respondents (more than 63%) use JavaScript. Also, IT Skills Report 2023, recruiting platform DevSkiller, found that 28,05% of companies want to hire JavaScript developers.

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What does a JavaScript developer do?

A JavaScript developer creates websites and web apps.

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What is the use of JavaScript in web development?

JS is a programming language that allows you to implement complex functionality in web pages and not select only static information.

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What should I look for in a JavaScript developer?

JavaScript developers must be able to work with HTML and CSS. Master ES6 at a high level and keep it up to date. Be able to work with React library and Angular application framework. Understand Node.js and NPM, set up a database, and interact with its APIs. Master the MVC design pattern.

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Where do I find JavaScript developers?

A dedicated software development company renting out its developers can do this for you. Otherwise, consult freelancer sites, programming community forums, or code repositories to find developers with relevant portfolios.

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How much do JavaScript developers make?

The average salary for a JavaScript developer in the U.S. from an entry-level position starts at $97,091 per year, with the most experienced workers earning up to $150,122 a year.

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How much does JavaScript cost?

The cost of hiring a JavaScript developer depends on their knowledge, experience, and location. For example, in Lithuania, Junior JavaScript developers can be hired at $15-25 per hour, Middle JavaScript developers can be hired at $25-40/hr, and Senior JavaScript developers at $40-55/hr.

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Hire a JavaScript Developer:
How much should you spend?

Our calculator can help you estimate costs for the expertise you need. Get more information about hourly breakdowns, per staffer hired in a few clicks.