799 React.js developers in 203 agencies found

VK
Victoria K.
Silicon Valley based Mobile/Web Developer with 5 + years of experience. Main stack: React Native, JavaScript, Node.js, React.js
All rates are indicative, annual rate includes 20% discount
view Profile
Updated: 12 Jul 2019
NS
Natali S.
JavaScript (Angular, React, Node) developer
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Updated: 04 Jul 2019
EG
Evgenii G.
Highly-proficient React.js developer with deep expertise in E-learning, VR and AR, Maps and geocoding apps.
I'm an inventive, enthusiastic and result-oriented React developer with 3+ years of experience. I'm working on the development of progressive web apps and mobile applications for E-learning, Mapping&N...
All rates are indicative, annual rate includes 20% discount
view Profile
Updated: 19 Jun 2019
BD
Bohdan D.
Trusty web and mobile developer with over 3 years of experience. Extensive knowledge of React.js, Redux, React Native, TypeScript, JavaScript.
An analytical and results-oriented information technology professional with wide-ranging expertise in web design, software development, mobile applications and quality assessment. Possesses a proven...
3 Projects completed
GMT+3 Middle East
All rates are indicative, annual rate includes 10% discount
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Updated: 16 Jul 2019
Nazar T.
Front-end developer with 10 years of experience in IT, 6 years of them as JS front-end developer in commercial projects.
All rates are indicative, annual rate includes 10% discount
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Updated: 04 Jun 2019
AK
All rates are indicative, annual rate includes 20% discount
view Profile
Updated: 10 Jul 2019
MS
All rates are indicative, annual rate includes 20% discount
view Profile
Updated: 10 Jul 2019
Full-stack developer with more than 6 years of IT experience
✅ JavaScript, TypeScript ✅ React.js/Redux, Angular.js ✅ HTML, CSS, Scss, Less ✅ Node.js, Express.js ✅ MySQL/MariaDB ✅ PHP, Laravel, Symfony, Wordpress ✅ Git, Docker, ubuntu/debian
1 Project completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 15 Jul 2019
YK
Full Stack JavaScript developer skilled in React.js / NodeJS
All rates are indicative, annual rate includes 20% discount
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Updated: 15 Jul 2019
AS
All rates are indicative, annual rate includes 20% discount
view Profile
Updated: 16 Jul 2019
OS
Front-End Developer - React.js | React Native | JavaScript | Vue.js | Next.js
Olga is on a bleeding edge of technological innovation and a real Front-End hero with over 4 years of experience! Her services combine broad technical JavaScript capabilities (React.js, Vue.js, Next.j...
3 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 10% discount
view Profile
Updated: 16 Jul 2019
VH
All rates are indicative, annual rate includes 10% discount
view Profile
Updated: 16 Jul 2019
VM
Senior front-end engineer with over 8 years of experience. JavaScript, React.js, Ember.js, Redux, React Native, Node.js.
● 8+ years of web development; ● 3+ years of mobile development(2 as a teamlead): ● Frontend engineer with a huge expertise in web and mobile technologies; ● Produces clean, supportable, extensibl...
3 Projects completed
GMT+3 Middle East
All rates are indicative, annual rate includes 10% discount
view Profile
Updated: 16 Jul 2019
SZ
Mobile Developer - React Native | React.js | Node.js | JavaScript
Boasting a sterling track record of customer satisfaction, Sergey’ll concentrate exactly on what your project needs. Being a superb Mobile app developer, he thinks agile and robust. That has helped hi...
2 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 10% discount
view Profile
Updated: 16 Jul 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.