617 React.js developers in 171 agencies found

Anton S.
JavaScript Ninja (React, Node.js, Angular)
Hi, My name is Anton Smirnov, I am a JavaScript Developer with 3+ years of job experience in development and 1+ year experience as Team Lead. Within this period I have worked with JavaScript SE, Ba...
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Updated: 06 Dec 2018
NS
Natali S.
JavaScript (Angular, React, Node) developer
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Updated: 18 Jan 2019
RR
All rates are indicative, annual rate includes 10% discount
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Updated: 06 Dec 2018
YS
Yuriy S.
JavaScript (Angular, React, Node) and React Native developer
All rates are indicative, annual rate includes 10% discount
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Updated: 06 Dec 2018
NR
Nikita R.
JavaScript (React, Angular, Node) and PHP (Laravel) developer
All rates are indicative, annual rate includes 10% discount
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Updated: 06 Dec 2018
AK
Anatolii K.
Front end developer with strong knowledge of JavaScript / React.js / React Native
All rates are indicative, annual rate includes 20% discount
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Updated: 14 Jan 2019
AL
Senior Web and Blockchain Developer
I am extremely passionate about blockchain and web development and finding elegant solutions to difficult business tasks ----------- My skills: ----------- ✔ Golang ✔ Blockchain (Ethereum, Bitco...
1 Project completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Jan 2019
UI/UX Designer, Front End developer
Work as web/ mobile UI/UX/ 3D designer. I provide: 1) Mobile app UI/UX design for iOS and Android, 2) Website and web app design, 3) Dashboard UI/UX for CRM, ERP or any other data management system, 4...
10 Projects completed
GMT West Europe
All rates are indicative, annual rate includes 15% discount
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Updated: 18 Jan 2019
AK
Senior Go/Python/JS and Solidity Developer
Over the past 3 years I have developed and delivered numerous Blockchain projects which work with Ethereum, Bitcoin, IPFS, etc. Also I have 12+ years of commercial development of web application using...
2 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 15 Jan 2019
RoR, Node.js and React.js Developer
Full-stack developer with over 6 years of experience in web development. Main technology is Ruby, though I'm as good in back-end so in front-end development. So I am also skilled in JavaScript. I'm o...
5 Projects completed
GMT+4 Russia Europian Region
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Jan 2019
Full-stack developer
I work as a RoR developer and specialize in creation of back end solutions for either mobile or web applications. Have strong experience in developing complex web applications and ecommerce solutio...
3 Projects completed
GMT West Europe
All rates are indicative, annual rate includes 15% discount
view Profile
Updated: 18 Jan 2019
JavaScript, React.JS developer with decent background in WordPress
I'm a conscientious, results-driven, articulate software engineer with several years’ experience in JavaScript; primarily focusing on WordPress development and React.JS Strong in developing scalabl...
1 Project completed
GMT West Europe
All rates are indicative, annual rate includes 20% discount
view Profile
Updated: 17 Jan 2019
AG
All rates are indicative, annual rate includes 20% discount
view Profile
Updated: 18 Jan 2019
Full Stack JS Developer
RoR and Python stack (6+ years). Have vast experience with the following solutions: ERP software, CRM, Inventory Management, Route building and Delivery planning tools and more. My Python skillset:- F...
3 Projects completed
GMT West Europe
All rates are indicative, annual rate includes 20% discount
view Profile
Updated: 18 Jan 2019

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React.js

Interviewing a ReactJS Developer: A Survival Guide

As of 2017, ReactJS is still among the most popular JavaScript libraries for building user interfaces. Therefore, there is an ever-growing need for highly-qualified ReactJS developers. In this article, we are going to highlight the 20 key technical skills that you should spot when interviewing a ReactJS programmer.

Top 20 Tech Skills of a ReactJS Programmer

What is typically required from a ReactJS developer? Here is a list of more or less standard skills:

  1.  Knowledge of web development fundamentals: HTML, and CSS, and JavaScript.
  2.  Experience with CSS preprocessors and frameworks, such as SASS, LESS, BootStrap, etc.
  3.  Deep understanding of React.js, its core principles and differences from other JavaScript frameworks.
  4.  Familiarity with React Native (if your project involves mobile application development).
  5.  Hands-on experience with JavaScript, including the JavaScript object model and DOM manipulation.
  6.  Knowledge of JSX syntax.
  7.  Experience with popular React.js workflows and architectural patterns, such as Flux or Redux.
  8.  Familiarity with new specifications of EcmaScript.
  9.  Ability to transform the design wireframes into front-end code.
  10. In-depth understanding of algorithms, data structures, and system design.
  11. Expertise with data structure libraries, such as Immutable.js.
  12. Good knowledge of RxJS library for reactive programming.
  13. Knowledge of modern authorization mechanisms, such as JSON Web Token.
  14. Experience with common front-end development tools, such as Webpack, Babel, NPM, etc.
  15. Understanding business requirements and ability to convert them into technical requirements.
  16. Knowledge of JavaScript-based building and automation tools, such as Grunt, Gulp, NPM, and Bower.
  17. Familiarity with responsive design and cross-browser compatibility principles.
  18. Familiarity with/experience in building and integrating REST APIs.
  19. Understanding of stateless components.
  20. Experience with unit testing frameworks.

Additionally, professional ReactJS programmers should have such soft skills as excellent communication skills and ability to learn quickly, because the front-end technologies are constantly evolving.

This is basically what you need to ask when interviewing a ReactJS developer. We hope that you will quickly find an ideal candidate and wish you good luck and happy hiring.