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Express.js Coding Assessment for efficient screening and data-driven hiring insights

This Express.js assessment objectively evaluates candidates' knowledge and skills in the Express JS framework. The test helps employers to effectively identify the best talent who is well-versed in all Express functionalities. Using it as a part of the screening process allows recruiters to reduce the hiring time and improve the interview-to-offer conversion ratio. 

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Inside this Express.js Skills Assessment

Express.js (or Express) is a Node.js web application framework used to develop lightweight and user-friendly web applications efficiently. Since Express is hosted within Node.js and is written in JavaScript, it lent unparalleled ease for programmers/developers to build web apps and APIs easily and quickly. Furthermore, hiring a skilled Express.js developer will enable organizations to build scalable, agile, high-quality applications.

This Express.js skills assessment takes into account domain skills most critical to success in the role. It is a multiple-choice question (MCQ) based test that touches all the relevant topics with well-crafted questions. The Express.js recruitment test comprises questions from essential sections such as Node.js Basics and NPM, Rest API, Node modules, etc. The test also incorporates the questions from the other vital areas, such as Form Handling, Middleware, Scaffolding, Templating, Error Handling, etc. Therefore, this test ensures candidates are evaluated thoroughly for their knowledge and skills in Express.js.

The test helps to screen candidates for the following roles: 

  • Express.js developer
  • Software developer (Express.js)
  • Backend developer (Express.js)


In an increasingly competitive business landscape, time is one of the most valuable assets for organizations to gain a significant advantage. In addition, many programmers are time-pressed to develop excellent web apps in a short time. However, coding and testing web applications, to say the least, are incredibly time-consuming. This is where Express comes in handy to simplify matters for programmers. Express.js is a popular Node.js framework that contributes to the faster and more efficient creation of server-side web applications. Simplicity, scalability, and flexibility are some of its notable characteristics, and since it's layered on top of Node.js, it delivers an equivalent performance.

To make the most of this web application framework, one must recruit expert Express developers who are well-versed in all the intricacies of leveraging this technology. Finding and onboarding talent matching the job-relevant criteria is arduous for hiring managers and employers. The prime contributors are a half-baked screening strategy and a flawed assessment methodology. Moreover, resume accomplishments do not indicate a person's technical competence, capability, or work readiness. This is where the Express.js Skills Assessment is instrumental in providing an in-depth insight into a candidate's on-the-job skills and job fitment.

Conducting the Express.js Assessment is crucial for ascertaining an individual's suitability for the required job role. On top of that, the test results succinctly present a detailed analysis of the candidate's strengths and opportunities for improvement. Hence, it is no surprise that these tests are pivotal in helping organizations make data-driven hiring decisions and objectively and effectively predict the candidate’s performance. 


This Express JS Test is a part of following Skills Libraries

Express.js Assessment Competency Framework

Get a detailed look inside the test

Express.js Recruitment Test Competencies Under Scanner

Express.js Hiring Assessment



The following subskills are assessed in the Express.js Test: The request and Response objects (REST API +Methods +Routing), Form Handling, Middleware, Scaffolding, Templating, Error Handling, Database Connectivity, Cookies, and Logging.


Subskills assessed in this section are Basics and NPM, Buffers and Streams, Events, Node and Rest API, File System, and Modules.

Customize This Express.js Assessment

Flexible customization options to suit your needs

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Choose easy, medium or hard questions from our skill libraries to assess candidates of different experience levels.

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The Mercer | Mettl Express.js Assessment Advantage

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  • Inbuilt Cutting Edge AI-Driven Proctoring
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Express.js Assessment Can Be Setup in 4 Steps

Step 1: Add test

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Step 2: Share link

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Step 3: Test View

Candidate take the test

Step 4: Insightful Report

You get their tests report

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Frequently Asked Questions (FAQs)

Yes, there are separate tests for Express.js and Node.js, respectively, but the Express.js test also incorporates questions related to Node.js because knowledge of Node.js is equally necessary to work on Express.js.

The Mercer | Mettl Express.js Recruitment Assessment is tailored for recruitment. However, we can do benchmarking for custom sample sets as well. Please write to us about your request; we will be glad to assist you.  

We have previously customized Express.js Hiring Test reports based on the client’s requirements. So please write to us with your request, and we will be glad to provide you with a solution. 

Listed below are some most frequently asked Express.js interview questions: 

A. What is Node.js? 

 Node.js is a popular server technology that uses JavaScript. It is an open-source environment. It helps you to build a complete website using only one language. It is built on an open-source V8 JavaScript engine.  

 B. What is Express.js? 

 Express.js provides the framework for Node.js. It comes with various features that help in mobile and web application development.

 C. What is the use of Express.js with Node.js? 

 Node.js uses the HTTP module and Express.js. This way, you don’t need to repeat some frequently used codes. It expedites the whole process of coding.

 D. What is CLI in Node.js? 

 The full form of CLI is a command-line interface. It helps the user type some commands or run some scripts. There are different CLIs for different operating systems. For example, Bash is used on Linux and Terminal on Mac, and likewise, PowerShell is a CLI for Windows.

 E. List some of the languages that support Node.js. 

 Node.js uses C, C++, and JavaScript. Google has an open-source V8 JavaScript library engine that converts the C++ code into JavaScript code. 

 F. What is a JavaScript engine? 

 JavaScript engine is a program that converts the JavaScript codes into an understandable language for the computer processor.   

G. What does npm stand for? 

 Npm stands for node package manager. Npm is used for installing packages and modules that work as a command-line utility. 

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