Node Js Developer

Big Oh Notation; Dadri; On-site; INR 900,000 - 1,500,000; Full time

Job summary

Big Oh Notation Pvt. Ltd. is seeking a Node.js Developer to design, build, and maintain high-performance applications. You will develop RESTful APIs, microservices, and integrate with Kafka while ensuring scalability and reliability for data ingestion and analytics.

Required: 2+ years of Node.js experience, strong SQL and NoSQL skills, and proficiency with Express.js or NestJS. Cloud exposure (AWS/Azure) is a plus.

Qualifications

• Proven ability to design RESTful APIs and microservices using Node.js.
• Experience with relational and NoSQL databases.
• 2+ years of hands-on Node.js API design experience.
• BS/MTech in CS or related equivalent.

Responsibilities

• Design, build, and maintain high-performance Node.js apps.
• Develop RESTful APIs and microservices.
• Ensure performance, quality, scalability, and responsiveness.
• Design database schemas to support processes.
• Collaborate on data ingestion, migration, standardization, and analytics.
• Integrate applications with Kafka topics.
• Build apps using Express.js and NestJS.
• Develop reusable Node.js modules with PostgreSQL/MySQL and MongoDB/Cassandra.

Skills

DS & Algorithms

Design Patterns

Relational DBs

NoSQL DBs

Cloud (AWS/Azure)

TDD/Testing

Security Best Practices

Education

B.Tech/B.S or M.Tech/M.S in Computer Science

Tools

Express.js

NestJS

Kafka

PostgreSQL

MySQL

MongoDB

Job description

Big Oh Notation Pvt. Ltd. are an ISO 27001 & CMMI Level 3 certified IT product and services company specializing in AI-led digital transformation and enterprise software engineering. We are the technology partner for AI-driven products, including Digilawyer, Costimizer.ai, and Botshot.ai, delivering scalable solutions across intelligent automation and applied AI systems.

Job Title - Node.JS Developer

Job Responsibilities :

• Design, build, and maintain high-performance, reusable, and reliable Node.js applications.
• Develop RESTful APIs and microservices aligned with business use cases.
• Ensure optimal performance, quality, scalability, and responsiveness of applications.
• Design database schemas and develop SQL / NoSQL database objects to support business processes.
• Collaborate with business and technology teams to define application designs for data ingestion, migration, standardization, and analytics.
• Design, develop, and integrate applications with Kafka topics.
• Build applications using Express.js and NestJS frameworks.
• Develop reusable Node.js modules using RDBMS (PostgreSQL / MySQL) and NoSQL databases (MongoDB / Cassandra).

Required Skills:

• Strong knowledge of Data Structures and Algorithms.
• Good understanding of design patterns and their practical usage.
• Experience with relational databases (MySQL, PostgreSQL, Oracle, SQL Server).
• Working knowledge of NoSQL databases (MongoDB, Redis, Cassandra, etc.).
• Experience working with cloud platforms such as AWS or Azure.
• Exposure to Test-Driven Development (TDD) or automated testing practices is a plus.
• Bonus: Understanding of security concepts and secure coding practices.

B.Tech/B.S or M.Tech/M.S in Computer Science, or equivalent work experience

At least 2 years of extensive working experience in designing restful API's using Node.Js.

Required Skills