1664 JavaScript developers in 250 agencies found

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
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Updated: 19 Jun 2019
DO
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Updated: 23 Jun 2019
AS
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: 10 Jun 2019
Full Stack JavaScript developer with knowledge of distributed systems
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Updated: 24 Jun 2019
MB
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Updated: 21 Jun 2019
AL
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Updated: 21 Jun 2019
OA
Test Automation QA Engineer | QA Team Lead | QC| Manual QA Engineer | Ruby | Python
All rates are indicative, annual rate includes 20% discount
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Updated: 24 Jun 2019
YT
Front end and Back end developer with strong knowledge of JavaScript, Angular, React.js, Node.js
All rates are indicative, annual rate includes 20% discount
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Updated: 19 Jun 2019
VM
A skilled Front-End developer with more than 10 years of experience.
Vitaliy is a proficient web developer with a lot of experience in back-end and front-end development. Winner of the 10th Ukrainian Dev challenge in nomination Front-end (HTML+CSS) development in PRO c...
2 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 21 Jun 2019
IR
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Updated: 21 Jun 2019

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JavaScript

13 Things You Should Consider When Interviewing a JavaScript Developer

Nowadays more and more companies focus on front-end development, putting the UI/UX component of their software products in the first place. JavaScript is considered to be the language of future. Therefore, the job websites are now full of vacancies that invite JavaScript developers to join the front-end development teams, and sometimes the demand is even higher than supply.

If you’re looking for a professional, experienced and highly-qualified JavaScript developer, then you have come to the right place. In this article, we are going to highlight some key technical skills that are a must for JavaScript programmers.

Must-Have Technical Skills of a JavaScript Programmer

  1. Deep understanding of JavaScript itself, for example, understanding of prototypal inheritance, functional programming vs. object-oriented programming, and some variations of a module pattern.
  2. Good understanding of AJAX – a set of client-side web development methods that is used to create asynchronous web applications.
  3. Basic understanding of web markup, including HTML5 and CSS3.
  4.     Knowledge of advanced JavaScript libraries and frameworks, such as AngularJS, KnockoutJS, BackboneJS, ReactJS, etc. – depending on the stack of your project.
  5. Understanding of Document Object Model (DOM). Document Object Model is a programming interface specification, which is developed by the World Wide Web Consortium. JavaScript developers use DOM to create and modify XML documents and HTML pages as fully-fledged program objects.
  6. Understanding of one-way data flow and two-way data binding as well as differences between them.
  7. Understanding of asynchronous programming and its importance for JavaScript.
  8.     Ability to name the pros and cons of monolithic vs. microservice architectures.
  9. Experience with cross-browser compatibility issues and how to deal with such issues.
  10.  Familiarity with front-end build tools, such as Gulp or Grunt.
  11.  Experience with front-end package management tools, such as npm and Bower.
  12.  Knowledge of the Domain Driven Design and Test Driven Development principles.

If your candidate can answer questions related to this skillset, it means that they have enough experience to join your front-end development team and become a valuable resource for your project. We wish you good luck and hope that you will make the right choice!