KOLKATA · FULLTIME
Urgent Hiring For NodeJS Developer (4+ Years)
Han River Technology Pvt. Ltd.
Kolkata · onsite · Posted 54d ago
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Section · 01
About this role
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
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Section · 02
Skills
Section · Company
About Han River Technology

Han River Technology Pvt. Ltd.
IT Services & Consulting
125
employees
2013
13 years old
Kolkata
India
₹4.5L PA avg
Avg at Han River Technology
About
Han River is the fastest-growing, top-rated App & Web development company that provides technology-driven solutions to industry-reputed organizations around the globe.
We believe in flexibility and an end-to-end delivery approach with a prompt adaptation of the latest technology trends.
We at Han River, work with a pool of talents when it comes to developers including engineers, programmers, coders, and architects. Years of hands-on experience and long-standing collaboration with global giants attest to our uncompromisable commitment to delivering tailored digital solutions.
- Our Technology Stack: etc.
- Successful Projects: 300+
- Team: 200+ highly experienced developers
- Silicon Valley CEO
- Average Client Rating 4.5/5
At Han River, we always try to keep our work policies very simple and employee-centric. We believe in collaboration, integrity, dynamism, and mutual growth. We are constantly making strides to inculcate the **leadership psyche** so that everyone builds the habit of questioning to think out of the box.
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Culture
3.7
Career growth
3.4
Work-life
3.7
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