There are dozens of programming languages that you can choose for your software project. And JavaScript is among the leaders. Now, 98.8% of all websites run this language on the client side, and the number of JavaScript developers on the market keeps growing – more than 63% use it. So, how to choose the right JavaScript development company to outsource your project?

We analyzed hundreds of available agencies based on reviews, services, and reputation and listed 20 top picks. In this article, we will discuss their prices and offerings and how to hire JavaScript developers. So let’s get started.

 

Key Statistics: JavaScript Development Services

  • Statista reports that JavaScript is software developers' most widely used programming language. As of 2023, 63.61% of programmers use it.
  • The most popular technology skills in the JavaScript stack are React (26.88% of developers use it), Node.js (24.69%), Typescript (20.63%), and Angular (17.19%).
  • At the end of 2022, there were about 2.5 million open-source JavaScript projects in the Maven Central Repository and about 37 million versions of JavaScript projects worldwide.
  • The State of JS survey found that developers use JavaScript most often for front-end (75.6% of respondents), back-end (50.1%), mobile apps (20.8%), and desktop apps (15.5%).
  • Apart from programming, JavaScript is popular among experts in e-commerce and retail (21.8%), finance (12.6%), education (10.5%), and marketing (10.4%).

Top 20 JavaScript Development Companies

1

Experion Technologies

Min. project size: $10,000+

1,000 - 9,999 Employees

$25 - $49 / hr

Headquarters

Plano, TX, United States

Experion Technologies is a JavaScript development company founded in 2006 in Texas, USA. They specialize in web,... Learn more about Experion Technologies

Experion Technologies is a JavaScript development company founded in 2006 in Texas, USA. They specialize in web, data science, analytics, ML, AI, cloud, IoT, and mobile technologies. The company has served over 300 clients across 9 industries. It includes Healthcare, Logistics, Retail, Banking, EduTech, and Real Estate. They have six awards as one of America’s Fastest Growing Companies and have appeared in the Top 100 Inc Regionals.

Experion Technologies designs and develops web-based software applications using JavaScript, React, CSS, and HTML. They can integrate many software systems with APIs, middleware, and custom connectors. The company also offers 24/7 monitoring and support.

Headquarters

Plano, TX, United States

2

DOIT Staffing

Min. project size: $10,000+

10 - 49 Employees

$50 - $99 / hr

Headquarters

Austin, TX, United States

DOIT Staffing is an IT staff augmentation provider specializing in hiring the top 5% of JavaScript developers.... Learn more about DOIT Staffing

DOIT Staffing is an IT staff augmentation provider specializing in hiring the top 5% of JavaScript developers. On average, they check 60+ candidates per vacancy and run 3 interviews to test soft and hard skills and cultural fit. They have expertise in a whole stack of JavaScript frameworks and libraries, including Vue.js, Node.js, React, Angular, and more.

The company delivers the first CVs within a few days and completes hiring within 2-4 weeks. DOIT Staffing offers payroll, office space, HR, and legal support. They also provide free replacement and knowledge transfer.

Headquarters

Austin, TX, United States

3

ImageX

Min. project size: $10,000+

50 - 249 Employees

$100 - $149 / hr

Headquarters

Vancouver, Canada

ImageX, a digital agency founded in 2001, specializes in JavaScript web development services. They have received many... Learn more about ImageX

ImageX, a digital agency founded in 2001, specializes in JavaScript web development services. They have received many recognitions, like Drupal Splash, Indigo Design, and AVA Digital Awards. The company has completed over 300 enterprise CMS projects. They offer UI testing, UX design, web development, and ongoing support.

Their team also provides digital consulting, covering copywriting, on-site audits, content strategy, and SEO. Custom development services feature mobile-optimized IA & UX, design, and cross-platform testing. As a certified provider, ImageX has experience with Apigee, Salesforce, Magento, and HubSpot integrations.

Headquarters

Vancouver, Canada

4

Perfsol

Min. project size: $10,000+

50 - 249 Employees

$25 - $49 / hr

Headquarters

Tallinn, Estonia

Perfsol is a top software development provider that offers JavaScript services. They provide web and mobile app... Learn more about Perfsol

Perfsol is a top software development provider that offers JavaScript services. They provide web and mobile app development, UX/UI design, product management, QA, and DevOps. With a team of 40 members and over 20 years of collective experience, they have delivered more than 50 projects.

Perfsol uses JavaScript for frontend, backend, data visualization, automation, consulting, and migration. They have developed business websites, taxi apps, and video streaming services. The company utilizes JavaScript frameworks like React, Vue.js, Angular, Next.js, Node.js, and Three.js.

Headquarters

Tallinn, Estonia

5

PopArt Studio

Min. project size: $5,000+

50 - 249 Employees

$50 - $99 / hr

Headquarters

Chicago, IL, United States

PopArt Studio is a global full-service digital agency with 14 years in the market. They have cooperated... Learn more about PopArt Studio

PopArt Studio is a global full-service digital agency with 14 years in the market. They have cooperated with over 100 digital agencies, serving over 14k clients across 65 countries. The agency has developed 13,241 JavaScript app development, design, and digital marketing projects. Their web development services range from $5,000 to $50,000.

PopArt Studio’s developers use Vanilla JavaScript, React.js, Next.js, Nuxt.js, Vue.js, and Node.js for web development. They have earned the CSSW Star certificate and are Awwwards Nominee 4 times.

Headquarters

Chicago, IL, United States

6

XWP

Min. project size: $50,000+

50 - 249 Employees

$150 - $199 / hr

Headquarters

New York, NY, United States

XWP has been providing JavaScript software development services for over a decade. They work with enterprise publishers,... Learn more about XWP

XWP has been providing JavaScript software development services for over a decade. They work with enterprise publishers, SaaS companies, eCommerce merchants, and other digital partners. Their core services include custom web and plugin development, progressive web apps, and CMS migration. The team is experts in PHP, Drupal, HTML, JavaScript, and more. XWP can handle SaaS, technology solutions, and custom workflows.

Headquarters

New York, NY, United States

7

P2H Inc

Min. project size: $1,000+

250 - 999 Employees

$25 - $49 / hr

Headquarters

San Francisco, CA, United States

P2H Inc. is a global software company encompassing two major web development brands: P2H and GetDevDone. P2H... Learn more about P2H Inc

P2H Inc. is a global software company encompassing two major web development brands: P2H and GetDevDone. P2H focuses on delivering web portals and mobile solutions for digital transformation. Beyond development, P2H also manages Power BI Analytics, IT Operations Teams, and production monitoring.

GetDevDone has been a prominent provider of high-quality JavaScript development services for over 17 years. The agency provides website, e-commerce, and web app development. They also offer low-code/no-code solutions, UI/UX design, and security optimization.

Headquarters

San Francisco, CA, United States

8

Rootstrap

Min. project size: $50,000+

250 - 999 Employees

$50 - $99 / hr

Headquarters

Beverly Hills, CA, United States

Rootstrap is a JavaScript development company founded in 2011. The agency has created over 750 digital products.... Learn more about Rootstrap

Rootstrap is a JavaScript development company founded in 2011. The agency has created over 750 digital products. They have talented team members across the USA, Uruguay, and Argentina. Their main specialization is web and mobile development, backend and APIs, code audits, performance tests, and QA. Rootstrap also works with emerging tech like AR/VR, AI, blockchain, chatbots, and machine learning.

Headquarters

Beverly Hills, CA, United States

9

Infinum

Min. project size: $25,000+

250 - 999 Employees

$100 - $149 / hr

Headquarters

New York, NY, United States

Infinum is a JavaScript development agency operating from the US and Europe, and it has around 400... Learn more about Infinum

Infinum is a JavaScript development agency operating from the US and Europe, and it has around 400 experts. They have collected over 200 awards. It includes one of the fastest-growing European technology companies by Deloitte and the iF Design Award. Infinum builds mobile apps, landing pages, complex web applications, and back-office systems.

Headquarters

New York, NY, United States

10

Scopic

Min. project size: $5,000+

50 - 249 Employees

$25 - $49 / hr

Headquarters

Rutland, MA, United States

Scopic is one of the best JavaScript development companies with over 15 years of experience. They have... Learn more about Scopic

Scopic is one of the best JavaScript development companies with over 15 years of experience. They have delivered 1000+ successful projects to clients worldwide. Their core services encompass web, mobile, desktop, and cross-platform software development. Also, the agency manages app maintenance, cloud migration, Machine Learning, and AI development.

Scopic holds expertise in Trading, Finance, Education, Manufacturing, and Healthcare sectors. They are an AWS Partner at the Advanced Tier Services level and have JavaScript consultants on the team.

Headquarters

Rutland, MA, United States

JavaScript Development Services Overview

As you can see, a JavaScript development company mainly focuses on front-end and back-end development. But thanks to the vast JavaScript toolkit ecosystem, they also create mobile and desktop apps. Аnd agencies also offer various data-related services. Let’s find out.

JavaScript development services

 

JavaScript frontend development

First, JavaScript allows developers to integrate interactive elements into software solutions. It processes user events in real-time to load data without refreshing pages. JavaScript animates page elements so developers can create dynamic interfaces without trouble. It also supports single-page application development.

As a rule, Javascript development companies use three main frameworks and libraries for the front end: React.js, Angular, and Vue.js. The first one creates interactive interfaces. Angular structures web applications as interconnected components. Vue.js, in turn, simplifies interface development due to reactive data binding.

JavaScript development company frontend tools usage

Developers also often use other programming languages in combination with JavaScript. For example, HTML/CSS is great for structuring and styling. SASS/LESS introduces variables and nested rules for styling. Also, TypeScript adds static typing to JavaScript, increasing the app’s reliability.

 

JavaScript backend development

While most developers associate JavaScript with the front end, its use on the server side has also grown. The “JavaScript everywhere” approach and Node.js introduction have contributed to this. Many JavaScript development companies offer this technology across the entire development stack. This is suitable for developing such things:

  • web applications;
  • SPA (single-page applications);
  • MEAN stacked apps (MongoDB, Express.js, AngularJS, and Node.js);
  • MERN stacked apps (MongoDB, Express.js, React, and Node.js).

In general, Node.js supports real-time data processing, making it ideal for web apps that need to update data. JavaScript simplifies it by using a single language throughout the entire process.

JavaScript development company backend

A JavaScript development company can also use frameworks like Express.js, Meteor.js, Koa.js, and Backbone.js in the backend. For example, Meteor.js is a full-stack platform. It also provides fast web, mobile, and desktop app development.

 

JavaScript mobile development

Some of the JavaScript development companies on our list also offer mobile apps. This is because JavaScript enables cross-platform development from a single code base. It speeds up development cycles so companies can market mobile apps running Android and IOS faster.

This is also possible due to various JavaScript libraries and frameworks. For example, React Native runs on JavaScript and React and helps to develop mobile apps that are close to native. Cordova and Titanium have similar functionality. Ionic and jQuery Mobile work on JavaScript, CSS, and HTML5 and offer hybrid solutions focusing on performance.

JavaScript development company mobile tools usage

Thus, JavaScript enables the development of interactive and responsive mobile apps.

 

Other JavaScript development services

Besides the above, companies use JavaScript in some other services:

  • Desktop applications
  • Data visualization
  • Data analysis
  • Game development
  • IoT applications
  • Progressive Web Applications (PWA)

Notably, JavaScript helps to create cross-platform desktop applications with Electron or NW.js. These apps can integrate with native OS features and work like traditional desktop software. For example, you can see Electron in action in Visual Studio Code and Slack.

JavaScript also facilitates interactive data visualization and analysis in web apps. For example, the D3.js, Chart.js, and Three.js libraries allow developers to create 3D models and statistical graphs. TensorFlow.js handles implementing machine learning. And Node.js supports the execution of JavaScript for server-side data analysis tasks.

How to Evaluate JavaScript Development Company

Now, let’s outline the steps to detect your technical needs and analyze potential JavaScript partners.

 

1. Define technical requirements

You can find the best JavaScript development company even without in-depth knowledge of this technology. However, you must still prepare your requirements in the most detailed form possible. You can also contact JavaScript consultants on this issue and draft some of the following points:

  • The project's objectives, the problems it aims to solve, and its desired outcomes.
  • The functionalities and features your project requires.
  • If you have any, specify preferred JavaScript frameworks and libraries.
  • Third-party APIs, services, or platforms with which the app needs to integrate. For example, payment gateways, authentication providers, or social media platforms.
  • The expected user journey and key user interactions.
  • List of devices that need responsive design.
  • Performance benchmarks (load times, concurrent user handling, etc.)
  • If you have any, specify preferred development methodologies (Agile, Waterfall, etc.)
  • The expected support level post-launch.
  • Plans for future phases, updates, and potential expansion of features.
  • A budget range.
  • A timeline with milestones for deliverables.
  • Frequency of project status reports.

Also, consider any specific industry standards or compliance requirements.

 

2. Review coding practices

Request a code sample or review open-source contributions to check the agency’s standards. For example, find a JavaScript development company’s profile on GitHub and review their repositories. Pay attention to the code quality and the types of projects they contribute to. You can do the same on GitLab or Bitbucket.

Also, many open-source projects have a “Contributors” or “Team” page on their websites. It lists the names of people who have helped improve the project. So, you can search for JavaScript development examples of specific developers on these pages.

Also, ask about potential partners’ experience with test-driven development practices.

 

3. Assess communication and support

questions for JavaScript development company

А JavaScript development company must have a straightforward communication process and a track record of on-time project delivery. Check out the company’s reviews because clients often pay attention to meeting deadlines. Specify your preferred remote collaboration tool (Slack, Zoom, Google Meet, etc.).

As for project management, popular practices include Agile, Scrum, Kanban, Jira, Trello, etc. Discuss the agency’s approach to long-term project support. Make sure they offer adequate post-development support and maintenance.

Remember, you can schedule initial consultations with many potential partners and compare them. If you doubt your choice, it is always better to check twice.

Summing up

That wraps up our guide to choosing the best JavaScript development company. Luckily, many options exist for selecting the best partners for your software product. You just need to define your project goals and requirements and start your search with the list of top 20 picks above.

Or contact us, and we’ll provide you with a selection of the best JavaScript developers and other specialists for your project needs.

Frequently Asked Questions

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Why do big companies use JavaScript?

This is because JavaScript is a multifunctional programming language from 1995. Over all these years, JavaScript has over 100 frameworks and libraries for front-end, back-end, mobile apps, etc. Large companies use JavaScript because of its flexibility and ability to create a dynamic user experience.

Is JavaScript still growing?

Yes, JavaScript has been a leader among developers in the most used programming languages for many years. And even in 2023, 28 years after the first release, 63.61% of developers use it.

How much does it cost to develop JavaScript software?

It all depends on your project’s duration and the costs involved. Depending on location and expertise, JavaScript developers charge $25 to $199 per hour. Thus, the price often ranges from $5,000 for simple apps to more than $100,000 for complex enterprise-level solutions.

How long does it take to build JavaScript software?

The timeline can vary from a few weeks for simple projects to several months or even years for complex ones. For more details, please consult a realistic timeline with JavaScript consultants.

Serhii Osadchuk,
CTO @ DOIT Software
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