Hire JavaScript Developer

JavaScript

Upstaff provides top JavaScript developers skilled in building dynamic, high-performance web applications with expertise in:

  • Modern Frameworks: React, Vue.js, and Angular for scalable frontends.
  • Efficient State Management: Redux, Vuex, and Context API for seamless app logic.
  • Optimized Performance: Fast, responsive experiences across devices.

JavaScript

Meet Our Devs

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JavaScript 7yr.
WordPress 7yr.
Vue.js 5yr.
Ajax
Bootstrap
CSS
HTML
HTML5
HTML/CSS Preprocessors
jQuery
LESS
SASS
SCSS
ES6
Gulp.js
Pinia
Vue Router
Vuex
Webpack
Agile
DRY
Kanban
MVC
Scrum
SOLID
TDD
API
RESTful API
Cypress
Unit Testing
Docker
Git
UIKit
...

- 7 years of commercial experience with JavaScript, ECMAScript 6. - 5 years with Vue.js framework (including Vue 3 core principles, Style Guide, Composition API, official documentation of the framework) - Deep understanding of HTML5 and CSS3. - Interacting with API endpoints and other web services. - Converting UI/UX mockups into functional web applications with pixel perfection - Experience with responsive layout, web sites, mini applications in JS and SPA in Vue.js. - Familiar with SOLID, DRY and other clean code design principles. - Experience with UI components like UI Kit & Bootstrap - Unit tests (Cypress) - Projects with Wordpress - Intermediary English

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Seniority Middle (3-5 years)
Location Vinnitsa, Ukraine
JavaScript 5yr.
Web3.js
React
WebRTC
Ant Design 5yr.
Java
TypeScript
Ajax
Bootstrap
Bootstrap 4
CSS
HTML
Material UI
SCSS
Socket.io
Storybook
Styled components
Tailwind CSS
Ethers.js
i18next
Mobx
React Hooks
React Query
Redux
Redux Thunk
Redux-toolkit
Express
Ext JS
GatsbyJS
NestJS
Next.js
Node.js
MongoDB
PostgreSQL
Blockchain
Agile
Clean Architecture
Kanban
Scrum
Cypress
Jasmine
Jest
Mocha
React-testing-library
Unit Testing
dApps
Hardhat
Solana
Docker
Problem Solving
WebSockets
Chakra UI
CSS3
Openai
React-hook-form
seo
WAGMI
Zustand
...

- 5+ years of experience as a Front-end JavaScript Developer; - 5+ years of experience in React.js; - Proficient in Solana Blockchain operations, including managing deposits, executing transfers, creating Phantom wallets, and handling contract call interactions; - Strong abilities working with Web3; - Deep experience in Next.js technology; - Experience with WebRTC, Soket.io; - Good knowledge of Tailwind CSS, Bootstrap, and Chakra UI; - Experience working with Redux, and Docker; - Familiar with Node.js; - Proficiency in testing frameworks like Jest and Cypress; - E-commerce, web, and mobile applications, including learning platforms, chatbots, dApps, and cryptocurrency wallet extensions.

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Seniority Senior (5-10 years)
Location Castel San Giovanni, Italy
JavaScript 4yr.
Vue.js 2yr.
React 1yr.
TypeScript
CSS
HTML
SCSS
Styled components
Tailwind CSS
Express
Node.js
Vanilla JS
Vue Router
Vuetify
Vuex
Webpack
Cloud Firestore
Firebase
Figma
Git
Google API
RESTful API
Authentication
Nova Poshta API
...

- 3 years of commercial experience, early projects since 2017. (Vue.Js, JavaScript, Chrome extensions) - Has good knowledge of JavaScript, working with arrays, working with elements, sorting and data algorithms. Good understanding of HTML and CSS. - Familiar with methodologies, principles, paradigms, and patterns in software development. - Vuex for state management and Styled Components for styling. - Rest APIs (Google, NovaPoshta) and Git for version control. - Tailwind, Figma, and Webpack for UI - Experienced in using Google Firebase, Cloud Firestore and Authentication.

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Seniority Junior (1-2 years)
Location Dnipro, Ukraine
JavaScript 8yr.
React 8yr.
TypeScript 5yr.
Node.js 5yr.
Next.js 3yr.
Redux 4yr.
PHP 1yr.
React Native 1yr.
Angular
AngularJS
Backbone.js
Express
jQuery
NestJS
Angular CLI
Koa.js
ngFor
ngIf
NgRx
ngrx-forms
ngSwitch
React Bootstrap
reactive-forms
Redux-Saga
RxJs
Webpack
Ant Design
Material UI
Cordova
Ionic
AWS ElasticSearch
FireStore
MongoDB
MySQL
NoSQL
PostgreSQL
Redis
Sequelize
SQL
AWS
AWS EC2
AWS Lambda
AWS S3
Blockchain
Apache HTTP Server
Nginx
API
GraphQL
RESTful API
Conflict Management
Emotional Intelligence (EI)
Mentor Aptitude
Team Management
Team Management Skills
DeFi
Fortmatic
MetaMask
NFT
Smart Contract
Wallet Link
Web3
Docker
Kubernetes
MVC
REST
WebRTC
WebSockets
WordPress
Angular Material UI
Restfull API
Subsquid
...

- 10+ years of experience in web development, M.Sc in Software Engineering - Front-End: Angular, React, Vue.js (JavaScript & TypeScript) - Back-End: Node.js, Next.js, TypeScript , PHP - Mobile: React Native - AWS Cloud infrastructure - Control systems (e.g., Git) and familiarity with DevOps practices for continuous integration and deployment (CI/CD). - Unit testing, integration testing, and end-to-end testing. - Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Ability to motivate and inspire team members, resolve conflicts, and provide constructive feedback. - Experience conducting assessments and interviews remotely.

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Seniority Architect/Team-lead
Location Ukraine
React 6yr.
React Native 2yr.
JavaScript 7yr.
Node.js 3yr.
Go
Java
PHP
Ruby
TypeScript
Bootstrap
jQuery
LESS
SCSS
Ember.js
Gulp.js
NPM
React-Saga
Redux
Redux Thunk
Webpack
Java SE
SQL
AWS
DigitalOcean
Linode
Atlassian Trello
Jira
BitBucket
GitHub
GitLab
CI/CD
GraphQL
RESTful API
Jest
Kanban
Scrum
Ruby on Rails
Chrome Extensions
...

- 9 years of proven professional expertise in the IT industry; - Advanced experience in Web Development using JavaScript 7+ years; - Solid experience in software development using ReactJS and React Native (6+ years); 3 Years with Node.js - Good experience in Web development using PHP; - Beginner experience in Web Development using Ruby on Rails; - Beginner experience in Web Development using Java; - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Ukraine
JavaScript
TypeScript
Ajax
Bootstrap
Chart.js
CSS
HTML
HTML5
jQuery
SCSS
Gulp.js
NPM
Vuetify
Vuex
Webpack
Vue.js
Agile
Kanban
Axios
BitBucket
Git
GitHub
GitLab
Jira
Redmine
Linux
macOS
Windows
Microsoft Visual Studio Code
Web3
WebSockets
GoodDay
Web Storm
...

- 4+ years of commercial experience in IT. - Experience in developing applications using JavaScript (Vue). - Good knowledge in JavaScript - Experience in Single Page Applications Development - Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Ukraine
React 4yr.
Node.js 4yr.
JavaScript
TypeScript
Angular
AngularJS
Express
Lodash
Moment.js
CSS
HTML5
SASS
Styled components
i18next
Mongoose
Redux-toolkit
Typeorm
Adobe After Effects
Figma
Axios
Google Calendar
...

Software engineer specializing in full-stack JavaScript development, encompassing expertise in technologies such as React.js, Node.js, and TypeScript. Notable for driving the transition of a social media management platform from AngularJS to React and implementing robust features including API sync with Instagram. Engineered a time tracking application, demonstrating proficiency with database management and API extension. Delivered an assistive app for children, establishing strong foundations in UI/BE and documenting Node.js processes. With a solid background from O.M. Beketov National University, this developer combines technical skills with practical experience. Fluent in modern JavaScript standards (ES 11/12) and adept in tools like Redux and Docker, the candidate offers a comprehensive skill set for innovative software solutions.

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Seniority Middle (3-5 years)
Location Ukraine
JavaScript
Angular
C#
TypeScript
.NET Core
Azure
Azure Functions
Azure Storage
...

• 4 years of experience • JavaScript, Typescript, C# • Fluent English

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Seniority Middle (3-5 years)
Location Caracas, Venezuela

Let’s set up a call to address your requirements and set up an account.

Talk to Our Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager
Trusted by People
Trusted by Businesses
Accenture
SpiralScout
Valtech
Unisoft
Diceus
Ciklum
Infopulse
Adidas
Proxet
Accenture
SpiralScout
Valtech
Unisoft
Diceus
Ciklum
Infopulse
Adidas
Proxet

Want to hire JavaScript developer? Then you should know!

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Hire a JavaScript (JS) Programmer and Become the Owner of a Trendy Product

JS is one of the most well-known languages in the modern programming world. It is mainly used to create user-friendly and interactive websites.

Statista analytics shows that JavaScript tops the ranking of the most popular languages among global developers – it is used by 63.6% of respondents to the survey.

Ranking of programming languages by popularity

Source: Statista

Other data shows that 98.3% of all websites use JS as a client-side programming language.

However, this does not mean that JS is used only in web development. There are many frameworks built on this language that allow you to create dynamic, cross-platform applications for iOS and Android mobile devices, digital solutions for smartwatches, and even software for controlling flying robots.

If your mission is to get a user-friendly and high-quality digital solution that will become a real business card of your brand, it is time to hire a JS expert. In this article, you will learn when you need a skilled JavaScript developer and how to choose the best person for the job.

Applications That Can Be Developed in JS

JS is a cross-platform, object-oriented programming language whose syntax is based on Java and C. It contains types, operators, standard built-in objects, and methods.

This language allows IT professionals to use dynamically updated content in their products, including animated objects, interactive elements, pop-ups, and much more.

Without this language, programmers would have had to rely on CSS’s capabilities, which are limited to adding animations. And most web pages would still be static.

Thanks to such amazing features, the use of JS has long gone beyond the creation of web pages. Today, an experienced JavaScript developer can create other digital solutions, including:

  1. Interactive presentations. JS-based frameworks support functions that allow you to create presentations and slideshows in the form of websites. Developers can use animated lists, highlighting, interactive slides, personalized themes, etc.
  2. Applications for smart devices. Do you need a digital solution for your smartwatch or TV? Feel free to look for a JavaScript coder for hire. As a plus, you can develop software for robotic devices such as drones or quadcopters.
  3. Server-side applications. JS allows you to reduce the processing time of HTTP requests, automate tasks, and create server components. Many global giants, including Walmart, GoDaddy, PayPal, and Uber, have chosen JS to develop their server software.

Are you still on the fence about the technology stack for app development? Let’s take a look at the advantages of JS, which will become another argument in favor of JavaScript dev hiring.

Modern developers have a lot of progressive JS frameworks at their disposal, which are actively used to create complex applications and web resources. They are pre-written JS code libraries that provide programmers with ready-made functions and utilities to simplify the development process.

  • AngularJS. This is an open-source structural front-end framework. It allows you to improve the HTML syntax with specific directives that help you create dynamic digital solutions. Its scope is mostly limited to the development of single-page web applications (SPAs).
  • Node.js. This is a universal JS code interpreter based on the V8 engine, which, thanks to constant improvements, can be used not only for creating ordinary websites. Nowadays, this framework allows you to develop various digital solutions, including CMS, IoT applications, ecommerce platforms, streaming services, and much more.
  • jQuery. This is a lightweight JS library that works based on the interaction of this programming language with HTML. It simplifies the creation of interactive, dynamic user interfaces thanks to a convenient API that works in many browsers.

All the frameworks listed above have powerful functionality, a large ecosystem of tools, and reliable community support. This makes their use appropriate for creating progressive, competitive digital solutions.

JS Indispensability: Reality or Exaggeration?

The demand for JS among IT specialists is quite justified. After all, this programming language has several advantages:

  • Ensuring interactivity. The use of JS guarantees a dynamic user experience on the client’s side.
  • Large ecosystem of interfaces. There are many JS frameworks and libraries that offer numerous components and interfaces that can be used to create responsive digital products.
  • High performance. Innovative engines such as V8 allow you to use JS for complex computing and real-time application development.

The conclusion is self-evident: A JavaScript development team is essential for any business that wants to stay ahead of its opponents. But what should you do if you don’t have such a spot in your staff? Let’s talk about it further.

Where to Hire a JavaScript Professional?

If you are thinking about creating a modern mobile or web application, you will definitely face the question of where to seek a reliable JavaScript developer partner. There are several options:

  • Find a JavaScript developer on staff.

Hiring an in-house specialist is safer in terms of ensuring the quality of the software product. But at the same time, this leads to additional costs, such as training and adaptation of staff, etc.

  • Hire a remote JavaScript developer for the project.

This option is best suited for freelancers who want to get high-quality JS development services for an adequate price. The main thing is to contact a trusted JavaScript development agency. Only such a provider will be able to find a specialist for your needs.

So, which JavaScript dev hiring option should you choose?

Benefits of Outsourcing JavaScript Development for Your Business

It is most advisable to contact a JavaScript developer contractor. This choice is due to a number of advantages of this hiring method:

#1: Access to a pool of experienced programmers in your industry

You’ll be able to hire a JavaScript specialist with the knowledge and skills required for your project. Expertise in your business area can speed up development time and provide high results.

#2. Efficient use of the budget

The services of a remote JS specialist can be more cost-effective than employing an in-house programmer. As a principle, you can avoid the costs of recruiting, training, and creating the appropriate infrastructure.

#3. Scalability

Is a JavaScript developer needed? Outsourcing makes it easy to increase the size of your team. No longer require a specialist? That’s not a hassle either – just cancel their services after the project is over.

#4. Access to the latest technologies

Outsourcing companies usually follow the latest trends in the JS ecosystem. Therefore, you can be sure that the hired specialist will use innovative tools and technologies to work on your project.

#5. Comprehensive project support

The top IT recruitment platforms offer not only software development services but also full JavaScript developer support after the release. You can also hire a JavaScript consultant to strengthen your team.

Hire JavaScript Consultants

Need JavaScript consultants to untangle your web project or build something fresh? At Upstaff, our JavaScript pros bring deep know-how to the table, ready to code up slick front-ends, beefy back-ends, or full-stack apps that deliver. They’re wizards with modern JS—think React, Node.js, or vanilla JavaScript—turning your ideas into fast, user-friendly solutions. Whether you’re revamping an e-commerce site, launching a SaaS tool, or debugging a legacy mess in 2025, our consultants step in with practical fixes and big-picture smarts.

These folks don’t just code—they strategize. They’ll dive into your stack, spot bottlenecks, and whip up everything from responsive UIs to server-side APIs that scale. Our JavaScript consultants have seen it all, from optimizing webpack builds to wrestling with async bugs. Hiring with us gets you seasoned pros who can guide your team, boost performance, and keep your web development humming, all tailored to your goals and deadlines.

Hire the Best JavaScript Specialist on Upstaff

Still, wasting your time browsing JavaScript developer jobs? Look for the right specialist on Upstaff.

After all, cooperation with us means:

  • The assistance of our recruiters in choosing a specialist.
  • Transparent pricing system.
  • Quality assurance of the services provided.

Don’t rely on fortune by hiring unverified programmers. Contact the Upstaff manager and be sure of your choice!

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Talk to Our Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager

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FAQs on JavaScript Development

What is a JavaScript Developer? Arrow

A JavaScript Developer is a specialist in the JavaScript framework/language, focusing on developing applications or systems that require expertise in this particular technology.

Why should I hire a JavaScript Developer through Upstaff.com? Arrow

Hiring through Upstaff.com gives you access to a curated pool of pre-screened JavaScript Developers, ensuring you find the right talent quickly and efficiently.

How do I know if a JavaScript Developer is right for my project? Arrow

If your project involves developing applications or systems that rely heavily on JavaScript, then hiring a JavaScript Developer would be essential.

How does the hiring process work on Upstaff.com? Arrow

Post Your Job: Provide details about your project.
Review Candidates: Access profiles of qualified JavaScript Developers.
Interview: Evaluate candidates through interviews.
Hire: Choose the best fit for your project.

What is the cost of hiring a JavaScript Developer? Arrow

The cost depends on factors like experience and project scope, but Upstaff.com offers competitive rates and flexible pricing options.

Can I hire JavaScript Developers on a part-time or project-based basis? Arrow

Yes, Upstaff.com allows you to hire JavaScript Developers on both a part-time and project-based basis, depending on your needs.

What are the qualifications of JavaScript Developers on Upstaff.com? Arrow

All developers undergo a strict vetting process to ensure they meet our high standards of expertise and professionalism.

How do I manage a JavaScript Developer once hired? Arrow

Upstaff.com offers tools and resources to help you manage your developer effectively, including communication platforms and project tracking tools.

What support does Upstaff.com offer during the hiring process? Arrow

Upstaff.com provides ongoing support, including help with onboarding, and expert advice to ensure you make the right hire.

Can I replace a JavaScript Developer if they are not meeting expectations? Arrow

Yes, Upstaff.com allows you to replace a developer if they are not meeting your expectations, ensuring you get the right fit for your project.