Node.JS Developer

ExlService Holdings, Inc.; Pittsburgh (Allegheny County); On-site; USD 110,000 - 150,000; Full time

Job summary

ExlService Holdings, Inc. is seeking an experienced Node.js Developer to build and maintain fast backend services and APIs. You will write clean code, guide junior developers, and help the team make good technical decisions.

You will build REST APIs with Node.js, design schemas, review code, and collaborate with frontend, QA and product teams to deliver features on time while improving deployment, monitoring, and security practices.

Qualifications

• 6+ years hands-on experience in Node.js and JavaScript (ES6+)
• Strong experience with Express.js, NestJS or similar framework
• Good knowledge of async programming (Promises, async/await)
• Experience with databases: SQL (PostgreSQL / MySQL) and NoSQL (MongoDB)
• Experience building and securing REST APIs (authentication, JWT, OAuth)
• Good working knowledge of Git and code reviews
• Experience writing unit and integration tests (Jest, Mocha or similar)

Responsibilities

• Build and maintain REST APIs and backend services using Node.js
• Design database structures and write efficient queries
• Write clean, testable and well-documented code
• Review code and mentor junior developers
• Find and fix bugs and performance issues
• Work with frontend, QA and product teams to deliver features on time
• Help improve deployment, monitoring and security practices

Skills

Node.js

JavaScript ES6+

Express.js

NestJS

Async/await

PostgreSQL

MySQL

MongoDB

JWT/OAuth

Git

Jest/Mocha testing

Tools

Docker

Kubernetes

CI/CD pipelines

GraphQL

Redis

AWS

GCP

Azure

Job description

Node.js Developer

Experience: 6+ years

About the role

We are looking for an experienced Node.js developer to build and maintain fast, reliable backend services and APIs. You will write clean code, guide junior developers, and help the team make good technical decisions.

What you will do

• Build and maintain REST APIs and backend services using Node.js
• Design database structures and write efficient queries
• Write clean, testable and well-documented code
• Review code and mentor junior developers
• Find and fix bugs and performance issues
• Work with frontend, QA and product teams to deliver features on time
• Help improve deployment, monitoring and security practices

Must-have skills

• 6+ years of hands-on experience in Node.js and JavaScript (ES6+)
• Strong experience with Express.js, NestJS or a similar framework
• Good knowledge of async programming (Promises, async/await)
• Experience with databases: SQL (PostgreSQL / MySQL) and NoSQL (MongoDB)
• Experience building and securing REST APIs (authentication, JWT, OAuth)
• Good working knowledge of Git and code reviews
• Experience writing unit and integration tests (Jest, Mocha or similar)

Good-to-have skills

• TypeScript
• Microservices and message queues (Kafka, RabbitMQ)
• Cloud platforms: AWS, Azure or GCP
• Docker, Kubernetes and CI/CD pipelines
• Caching tools such as Redis
• GraphQL