Node Js Developer

About Company: 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. bigohtech.com 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. Hands-on experience with Node.js, JavaScript, ES6+, and OOP / SOLID principles. 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. Eligibility: 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.