Urgent Hiring For NodeJS Developer (4+ Years)

Han River Technology; Kolkata District, Bengaluru; On-site; INR 1,500,000 - 2,800,000; Full time

Job summary

Han River Technology is seeking a strong backend-focused Node.js Developer with hands-on NestJS experience. You will manage server-side logic, define and maintain the central database, and ensure high performance and responsiveness to front-end requests.

Strong software engineering fundamentals, including OOP, DI, and modular architecture, are essential, along with a basic understanding of front-end technologies.

Qualifications

• 4+ years of hands-on Node.js/backend development.
• NestJS experience is mandatory (modules, providers, guards, interceptors, pipes).
• Strong grasp of OOP and SOLID principles; DI and IoC in NestJS.
• Familiarity with SQL databases (MySQL/PostgreSQL) and NoSQL (MongoDB) is a plus.

Responsibilities

• Integrate front-end elements with server-side logic.
• Write reusable, testable, and efficient code.
• Design of low-latency, high-availability applications.
• Implement security and data protection.
• Integrate multiple data sources and databases.

Skills

Node.js

NestJS

TypeScript

JavaScript

OOP

SOLID

DI

SQL

PostgreSQL

MySQL

MongoDB

Testing

Git

Docker

REST

Security

Tools

Docker

Git

Job description

Role OvervieW :

We are looking for a strong backend-focused Node.js Developer with hands-on NestJS experience, responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. We expect solid software engineering fundamentals object-oriented design, dependency injection, and modular architecture — not just framework familiarity. You will also be responsible for integrating the front-end elements built by your co-workers into the application, so a basic understanding of front-end technologies is necessary as well.

Responsibilities :

• Integration of user-facing elements developed by front-end developers with server-side logic
• Writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performant applications
• Implementation of security and data protection
• Integration of data storage solutions

Skills and Qualifications :

• 4+ years of hands-on experience in Node.js / backend development
• Strong proficiency with JavaScript and TypeScript
• Hands-on experience with NestJS (modules, providers, guards, interceptors, pipes) — mandatory
• Strong grasp of OOP concepts (encapsulation, inheritance, polymorphism, abstraction) and SOLID principles
• Solid understanding of dependency injection and IoC, and how NestJS's DI container works
• Familiarity with common design patterns (repository, factory, strategy, decorator, etc.)
• Understanding of the nature of asynchronous programming and its quirks and workarounds
• Basic understanding of front-end technologies, such as HTML5 and CSS3
• Understanding of accessibility and security compliance
• User authentication and authorization between multiple systems, servers, and environments
• Integration of multiple data sources and databases into one system
• Understanding of fundamental design principles behind a scalable application
• Understanding of differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform
• Creating database schemas that represent and support business processes
• Strong database exposure to MySQL and PostgreSQL (schema design, indexing, query optimization); MongoDB or other NoSQL is a bonus
• Implementing automated testing platforms and unit tests
• Proficient understanding of code versioning tools, such as Git

Good to Have :

• Exposure to microservices architecture (MSA) — inter-service communication (REST/gRPC/message brokers), service decomposition, distributed system concerns
• Experience with message queues such as Kafka, RabbitMQ, or Redis Streams
• Familiarity with Docker and containerized deployments