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How to hire a great Javascript developer

Understanding JavaScript as a programming language

JavaScript has been identified as one of the most popular programming languages in the world of web and software development. It was initially created for web pages to appear more animated and feel more lively. The programs written in this language are called scripts and can be directly written in the HTML or HTML5 version of the webpage so that it automatically runs when the page loads. They are usually executed as plain text and do not require an impressive compilation. While many people seem to confuse between JavaScript and Java, this is the main point of difference here. In the scope of web development, JavaScript has been standardized and is supported inherently by most web browsers. The need for a JavaScript developer has been felt by most app development companies as it was found useful in various aspects, such as:

• Development in browser extensions like in Chrome or Safari, as well as on web apps.
• Mobile development with the help of React Native.
• Adobe Acrobat and Adobe Reader have used it for PDF files.
• Google desktop gadgets, Yahoo widgets, Microsoft gadgets, and other web services.

Common types of JavaScript:

Before you hire a JavaScript developer, it is crucial to know the various types of JavaScript frameworks that exist. The most common ones are as follows:

• React.js. This is in fact a flexible JavaScript library used to create user interfaces of web and mobile applications. React differs from other frameworks in the sense that it mainly focuses on the UI and does not affect the app design.
• Angular.js. It is an all inclusive JavaScript framework, with features like XSS protection, routing, state-management, routing, form validation, HTTP module, and so on. This structural framework aids the creation of dynamic web applications.
• Vue.js. Created in 2013, this framework allows JS developers to build single-page applications and user interfaces. This progressive framework makes room for easy integration into web development projects with the help of other JavaScript libraries.
• Node.js. This well-scalable framework provides a platform for running JS scripts outside the browser. Execution of the same can be done on the server-side. Node allows JavaScript coders to create back-end applications.

Hiring a JavaScript Developer

Various Types of JavaScript Developers:

1. Front-end developer: A front-end developer needs to understand web design and user experience, and know HTML as well as CSS along with JavaScript. The main job of such a software developer is to make sure that everything looks lucrative and must be able to convert mockups into working into faces.
2. Back-end developer: A back-end developer, on the other hand, is responsible for the various server-side functionalities. While they have to be familiar with databases, working with Node.js is also essential. It is with the help of a back-end engineer that you will be able to write APIs while fully understanding the strengths and weaknesses of this function.
3. Full-stack developer: For a full-stack engineer, it is essential to understand not only how these databases are going to be stored but also how these can be moved. These JavaScript developers have a broad field of knowledge; however, they may not be experts in specific areas. While you can find absolutely genius for prototyping, it is not wise to hire a primary full-stack developer for building database architecture.

Stack Requirements for a Javascript Developer

When you hire a JavaScript programmer, you will be able to satisfy various needs in your mobile and web application. From the multiple options provided, you need to go for a JavaScript programmer hire focusing on candidates who are exceptionally proficient in various configurations while showing flexibility and potential in specific domains of JavaScript development as well. In short, a full stack JavaScript developer should be able to develop client as well as server software. Apart from possessing proficiency in HTML and CSS, the person should also know the techniques of programming a browser (using jQuery, JavaScript, Vue or Angular) and server (using Node).

Before you hire a JavaScript developer or coder, it is crucial to know the various types of JavaScript that exist. The most common variations are as follows:

• Front end — React + Redux: React is a JavaScript library that was composed by Facebook, which is used for managing a graphical user interface.
• Back-end, which includes Node.js + Express: Node.js is one of the most important JavaScript runtimes that is based on the Chrome V8 JavaScript Engine. This helps in bringing JavaScript from the browser right to the server. It is generally non-blocking and is event-driven. It is used with Express, a fast and effective routing solution that has several middlewares helping you to run almost all applications.
• Mobile — React Native: This is a solution that helps in building total mobile applications using JavaScript. Applications hence made can be used on both iPhones as well as Android devices and offers some advantages.
• Database — MongoDB: This is a NoSQL database system that uses various documents with schemas.

Hiring an in-house or a freelancer or a dedicated remote JavaScript developer?

Once you understand the need to hire a JavaScript programmer, you should decide whether you want an in-house developer, freelancer, or a dedicated JavaScript developer (full-time or part-time) outsourced from a remote country. There are various pros and cons when it comes to different types of hiring options.

The first one is an in-house JS developer. An in-house developer is a huge commitment as a developer like this will cost you the most of all these options. It is simply not effective to hire in-house professionals for a short time because of the long recruitment process and high onboarding costs. When you hire a JavaScript developer in-house, you will also have to bear several overhead costs, such as insurance plans and renting an office.

When it comes to JavaScript freelance developers, while they generally agree to associate themselves with relatively short term projects, one difficulty that lies here is that it is complicated to find a JavaScript freelancer without proper reference.

However, when it comes to outsourcing dedicated developers from offshore countries, you will be able to hire a JavaScript programmer with genuine talent and skill. But, outsourcing JavaScript developers or a development team on your own is hugely time-consuming and may even take months. Herein, the help of professionals come in handy. With the help of YouTeam, you will be able to find software engineers including JavaScript developers. They have gone through proper vetting and screening from various outsourcing companies in Latin America and Eastern Europe. The process takes less than 48 hours with the help of YouTeam to set up the initial interview.

Important questions to ask when interviewing JavaScript developers

When you hire a JavaScript programmer, it is important to ask them the correct questions in the interview round. You must ask them all about soft skills as well as hard skills with the help of the following questions for an accurate assessment.

Soft skills assessment

For asking the right questions regarding their soft skills, you can use YouTeam’s solution that has over 150 questions in various domains. There are a plethora of questions in two main fields, that are general personality questions and those required for assessing remote readiness. The subdomains inside these main topics can be mixed and matched to generate items that are relevant to the interview. Some of the questions in the various domains and subdomains are as follows:

• General Personality Questions:
  • “Getting to know”: “How do you mediate between two people who have opposing views on a topic?”
  • Leadership: “Give an example of an initiative you have taken and completed to fruition.”
  • Time management: “What system to use to prioritize your tasks?”
  • Communication: “How do you communicate with those who are superior to you?”
  • Flexibility: “What personal technique do you employ to handle stress?”
  • Teamwork: “How do you compensate for inefficiency in another member of your team?”
  • Reliability: “Do you have trouble meeting the stipulated deadline?”
  • Creativity: “If you had enough capital to start your own business, what would it be?”
  • Organizational fit: “What are you looking for, concerning company culture?”
• Assessment of remote readiness:
  • General: “What do you understand by remote work?”
  • Remote time management: “What schedule do you follow for your remote workday?”
  • Remote communication: “How do you plan on establishing communication with your remote team?”
  • Critical thinking: “How do you make a decision? Do you weigh the pros and cons or jump to what seems right at the moment?”

Hard Skills

Some of the most important questions that you must ask to access the hard skills before you hire JavaScript programmers are as follows:

• Why is it important to wrap the entire content of a JavaScript source file into a functional block?
• Look at the two functions that have been presented to you. Do you think that they will both return the same thing? Why do you think so? (Present the functions)
• Can you write a simple function that is less than 160 characters which will return a Boolean indicating whether a string is a palindrome or not?
• Look at the code that has been presented to you. What will be the output of this? (Present a code).
• Can you give us an example of what “closure” means in JavaScript?
• With the help of the code that is provided to you, can you illustrate how the use of closure has benefited you? (Provide a code).
• Can you figure out what the problem is with this code? Explain how you can fix it. (Provide a code).
• Can you tell me how to clone an object?
• Please tell me how you can add an element at the top of an array.
• How can you add an element at the bottom of an array?
• What will the output of this code be? (Provide a code).
• Can you identify cross-browser compatibility issues? Do you know how these can be fixed?
• Can you give me an example of using a front-end tool like Gulp?
• Have you used front-end management tools like Bower?
• What can you tell me about Domain-Driven Design?
• Can you elucidate the importance of asynchronous programming in JavaScript?
• What is the difference between object-oriented programming and functional programming?
• What is AJAX used for?
• Can you provide me with a list of advantages and disadvantages of monolithic and microservices architectures?

How to write the Javascript project description?

Once you have understood the basics of hiring a JavaScript developer, and have taken a glimpse at the JavaScript programmer salary and hourly rate, it is now time for you to provide the project description that will attract potential developers. You require a good job description as well as a proper job advertisement that will provide all the required specifications to develop an interest in JavaScript experts looking for a job. You need to understand that if the quality of your project description is generic and too ordinary, you will not be able to find advanced JavaScript developers. You are required to make an excellent first impression, as a company looking for a JavaScript freelancer or dedicated JavaScript developers. It is essential for you to sell the job properly so that you are chosen among the other options. When you start writing the job description, here are a few things that you must include:

• You need to provide an introduction to your company. Make sure to add some interesting facts that will attract potential employees. You need to provide crucial information about the benefits of working in the company as well as the general company culture. Make sure to include remote working hours and possibilities and the other facts that make your company enjoyable.
• The job description must be informative as well as creative. Make sure that you provide the responsibilities as well as the skills that will be required by the employee in this job position. Make it a point to provide important aspects of the job that have to be considered by the employee before making an application.
• After this, you will have to list the various responsibilities that are to be undertaken by the potential employee. Make sure to provide the full list of what you look for in the employee.
• The next important aspect that you must highlight in order to hire top JavaScript developers is a list of the technical skills and qualifications that you expect in the potential employee. Here you must also mention the list of educational and academic certificates and degrees that you are looking for.

Conclusions

When you want to hire a JavaScript programmer, there are many things that you have to keep in mind. While JavaScript has become an important part of coding in web development and web application, the JavaScript programmer salary is also on the rise. To get the most appropriate resources at the best price, you can always outsource developers with the help of YouTeam as engineers here are vetted to churn out the best talent. Make sure to ask the right questions during the interview and provide a wholesome project description to get the attention of the best JavaScript developers. By following these simple steps you will be able to provide your company with the best JavaScript developers in the market for web and application development.

JavaScript coding sample

function encodeUtf8 (inputString) {
  inputString = inputString.replace(/\r\n/g, "\n")
  let utfString = ""
  for (let i = 0; i < inputString.length; i++) {
      let charCode = inputString.charCodeAt(i)
      if (charCode < 128) {
         utfString += String.fromCharCode(charCode)
      } else if((charCode > 127) && (charCode < 2048)) {
	utfString += String.fromCharCode((charCode >> 6) | 192)
	utfString += String.fromCharCode((charCode & 63) | 128)
      } else {
	utfString += String.fromCharCode((charCode >> 12) | 224)
	utfString += String.fromCharCode(((charCode >> 6) & 63) | 128)
	utfString += String.fromCharCode((charCode & 63) | 128)
      }
   }
    return utfString
}
function decodeUtf8 (utfString) {
  let c, c1, c2 = 0
  let string = ""
  let stringSymbol = 0
  while (stringSymbol < utfString.length) {
    let charCode = utfString.charCodeAt(stringSymbol)
    if (charCode< 128) {
      string += String.fromCharCode(charCode)
      stringSymbol++
    } else if((charCode> 191) && (charCode< 224)) {
      c2 = utfString.charCodeAt(stringSymbol+1)
      string += String.fromCharCode(((charCode& 31) << 6) | (c2 & 63))
      stringSymbol += 2
    } else {
      c2 = utfString.charCodeAt(stringSymbol+1)
      let c3 = utfString.charCodeAt(stringSymbol+2)
      string += String.fromCharCode(
        ((charCode& 15) << 12) | ((c2 & 63) << 6) | (c3 & 63))
      stringSymbol += 3
   }
 }
    return string
}