592 React.js developers in 81 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: 21 Nov 2018
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.
Web and Mobile front end developer with strong knowledge of JavaScript, React.js, Redux, React Native, Blockchain
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Dec 2018
AP
All rates are indicative, annual rate includes 10% discount
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Updated: 17 Dec 2018
DO
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Dec 2018
MB
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Dec 2018
AL
Front end and Back end developer , specialized in JavaScript / React.JS / AngularJS / Node.JS
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Dec 2018
AK
Front end and Back end developer, specialized in React Native / React.js / Node.js / AngularJS / JavaScript
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Dec 2018
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: 13 Dec 2018
VK
Mobile/Web Developer with 5 years of experience. Front end & Back end. Main stack: React Native, JavaScript, Node.js, React.js, MySQL, MongoDB
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Dec 2018
AD
Front end Web developer. Main stack: JavaScript, AngularJS, Vue.js, React.js, HTML, CSS
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Dec 2018
GM
Web Developer. Deep knowledge of front end production. React.js / JavaScript / Node.js / PHP / Wordpress
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Dec 2018

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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.