Node.js Developer Job Description, KRAs and Skills

A Node.js Developer builds backend services and APIs in JavaScript running on Node.js, often with the Express framework. At the entry level they build endpoints, work with databases and handle asynchronous code under senior guidance. A good junior Node.js developer writes clean async code, handles errors properly and understands the event driven model. The role sits in a backend or full stack team and reports to a technical lead or senior software engineer, delivering assigned services and learning the Node.js and npm ecosystem.

Detail	For this role
Department	Information Technology
Level	Entry level
Reports to	Technical Lead
Direct reports	None
Experience	Fresher or up to 2 years in Node.js development

Node.js Developer job description template

Copy this job description, replace the text in square brackets and post it on your careers page or a job portal.

Job title: Node.js Developer

Department: Information Technology

Reports to: Technical Lead

Location: [City], [office, branch or site]

About the role

Key responsibilities

Build REST API endpoints and backend services in Node.js and Express from clear tasks.
Write asynchronous code with promises and async await, handling errors correctly.
Work with databases such as MongoDB or PostgreSQL for the features you build.
Validate input and return clear, consistent responses to clients calling the API.
Write unit and integration tests for the code you deliver each sprint.
Fix reported bugs and confirm the fix does not break other endpoints.
Follow security basics for authentication, tokens and safe handling of secrets.
Manage packages with npm and keep dependencies reasonable and up to date.
Raise clean pull requests and act on review feedback quickly and openly.
Learn the event driven model, libraries and backend practices with senior support.

Requirements

Graduate in computer science, IT or engineering
Working knowledge of JavaScript and Node.js
A backend project portfolio is an advantage
Fresher or up to 2 years in Node.js development

KRAs and KPIs for a Node.js Developer

Key result areas for the appraisal form, each with a KPI you can measure every month or quarter.

Key result area	How to measure it
Delivery	Assigned services and endpoints delivered within sprint estimates
Code quality	Pull requests pass review with limited rework
Defect rate	Bugs from own code kept low, with critical defects near zero
API correctness	Endpoints return correct data and error responses as specified
Testing	Unit and integration tests written as per the team standard
Learning	New Node.js and backend skills picked up each quarter

Skills and tools

JavaScriptNode.jsExpress frameworkREST API developmentMongoDB or SQLAsync programmingUnit testingGitWillingness to learn

Tools used day to day: Node.js, Express, MongoDB, VS Code, npm, Postman.

Reporting line and career path

Moves up from: Software Trainee, Frontend Developer, Intern
Next roles: Software Engineer, Senior Node.js Developer, Full Stack Developer

Interview questions for a Node.js Developer

How does the Node.js event loop handle asynchronous work?
What is the difference between a callback, a promise and async await?
How do you structure a simple REST API in Express?
How do you handle errors in asynchronous Node.js code?
When would you choose MongoDB over a relational database?
Tell me about a Node.js service you built and how you tested it.

Managing a Node.js Developer in ZeniaHR

AttendanceOffice or hybrid on a general or flexible shift with core hours so service work has focus time. Office days record a web punch on the approved office network, while work from home days use mobile app punch with a location check, within the work terms limit.LeaveAs a probationer, the joiner appears in the probation queue, so schedule the manager review before confirmation falls due. Leave is approved by the reporting manager and then HR, and the apply preview shows the balance and any warning at submission.Performance and KRAsCapture the KRAs above as goals in the review cycle and review delivery and defect rate monthly. After the manager's probation review rated 1 to 5 confirms the developer, hold the formal review each quarter.

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Frequently asked questions

What does a Node.js developer do?

A Node.js developer builds backend services and APIs in JavaScript running on Node.js, often with Express. They build endpoints, work with databases, write asynchronous code and handle errors. At the entry level they deliver assigned services, write tests and learn the event driven model and npm ecosystem with support from senior engineers.

Is Node.js good for backend development?

Yes. Node.js is fast for input and output heavy work, uses JavaScript on both ends of the stack, and has a huge package ecosystem through npm. Many Indian startups and product firms use Node.js with Express for APIs and real time services. It is a strong choice, especially when the frontend already uses JavaScript.

Do I need to know JavaScript to learn Node.js?

Yes. Node.js runs JavaScript, so learn the language first: variables, functions, objects, promises and async await. Then learn how Node.js differs from the browser, how the event loop works, and how to build an API with Express. Understanding asynchronous programming well is the key skill that separates strong Node.js developers from weak ones.