Nods JS Backend Developer Must Have Technical/Functional Skills Node.js: Strong expertise in developing server-side applications using Node.js frameworks and libraries. JavaScript & Typescript: Proficient in JavaScript; comfortable working with Typescript for type safety and better code maintainability. Microservices Architecture: Experience designing, developing, and deploying microservices-based systems. PostgreSQL: In-depth knowledge of SQL databases, particularly PostgreSQL, including schema design, indexing, and query optimization.