Are you looking for node js developers? Do you know what to ask them before you consider hiring someone? Do you want to save yourself from accidentally hiring node js developers who can not do your project justice?
If yes, you must read the blog to equip yourself with the 5 Must-Ask Questions Before Hiring Node Js Developer In India.
If you are wondering why acquainting yourself with these questions is necessary, you must know that hiring node js developers who are not too well versed with the technology will only cause you trouble later.
Therefore, one must know how to evaluate interviewees to ensure that one picks only the best out of the lot. Let us dive in!
What are the 5 must-ask questions for hiring a Node Js developer in India?
Let us see the five must-ask questions for hiring node js developers in India. These are just some crucial questions. However, you should not solely depend on these five questions to evaluate your interviewees' worth.
What are Promises?
You can ask your Node js developer candidates about Promises. These are an alternate way to write asynchronous code, helping you manage asynchronous functions better in a Node js app.
Basically, promises let you return the error or result, and a developer needs to use the <.then()> function to implement them in Node js-related apps.
What is a Callback function in Node js?
Node js does not wait for a file I/O to conclude. Instead, it uses "Callbacks." The reason for it is that Node js is an asynchronous JS framework.
Let us talk a bit more about Callback. A callback is a function that one calls or invokes to complete assigned tasks to prevent blocking and let the other code be executed parallelly. It is why Node js apps can manage several I/O operations running simultaneously.
What is the Control Flow function? Elaborate on how “Control Flow” controls functional calls.
Do you remember the Callback function we talked about previously? This control flow function is related to that only.
A developer needs to use lots of callback functions when they desire to write asynchronous code in Node js.
However, there comes a time when the developer reaches the limit of using a nested callback, which is 63.
When such a situation arises, they are likely to encounter Callback hell. One of the best ways to prevent that is using the control flow function.
The control flow function aids one in structuring all asynchronous code you have in order to prevent your app from experiencing callback hell.
The said function helps you with the following:
- Gather data
- Controls the order of execution
- Integration limit
- Call the very next step in the program
What is the difference between non-blocking and Asynchronous?
Asynchronous in node js permits developers to make asynchronous HTTP requests; the server will respond to you in no time. Meanwhile, the app can continue working on any other blocks and send a response only when it receives the server's response.
On the other hand, non-blocking is a function often used with I/O operations. These respond instantly with whatever data is present to keep executing incoming requests.
Also, the code will quickly return an error if one cannot retrieve any response.
What is Node JS, and Where can it be used?
You might wonder why you would ask your interviewees such a straightforward question. Our honest answer is that their answer to this question can tell a lot about their expertise in this field. And a sample answer that suffices is as follows:
Moreover, they should also know on this technology has been built.
Node js is built on top of Google chrome's v8 engine and employs an event-driven, non-blocking Input-output model.
Developers and companies prefer using node js because you can use it to build different types of apps and services. For instance, real-time chat apps, REST APIs, web apps, and many more.
Now let us see what else you must try to look for in your candidates.
What things should your candidates know or possess?
Your ideal candidate must have the following in order to cut the mustard!
- They should have an in-depth capability in front-end technologies.
- They should be skillful at coding complex designs.
- Your candidates should have experience in writing integration testing codes.
- Also, having skills in GitHub writing is a desirable thing.
- Your potential developers should also know how to use scrum and agile methodologies.
What are the best practices that your developers should adhere to?
A developer who sticks to the following practices can do justice to your project.
- Your developer should correctly use HTTP status codes.
- They should do proper versioning with endpoints that they could comprehend later.
- They should employ authentications based on JSON Web tokens. These are also referred to as JWT.
- A good developer creates proper documentation for APIs.
What general qualities should you look for in your node js developers?
Here we list the general qualities that you should ensure that your node js developers possess:
- Problem-solving attitude
- Work ethic
- Eagerness to learn
Do you know what is easier than interviewing thousands of developers before finalizing the best for your business?
The easier option is to come to a reputed outsourcing firm with ample experience in this field. When you opt for professionals who have put their knowledge to the test over the years while receiving the best outcomes, you rest assured that your project is in safe hands.
And one such outsourcing firm you can avail yourself of is AppsRhino. AppsRhino is a reputed outsourcing firm that has developed several on-demand apps so far and has always lived up to the expectations of its clients.
Moreover, our developers are easy to work with, friendly, and thoroughly dedicated to their job!
All you need to do is send us your requirements, and we will send you a few shortlisted developers. You can choose the ones you want to interview before deciding.
Also, if you want a replacement, we can provide you with that too!
So what are you waiting for? Come to AppsRhino to let the magic begin!