# Backend ## Summary of Backend Expertise > Proficient backend developer with extensive experience in building scalable and efficient server-side applications using Node.js and Express.js. Skilled in creating RESTful APIs, implementing authentication systems, and integrating with databases to support robust web applications. ## Technical Skills * **Core Technologies:** Node.js, Express.js * **Databases:** MongoDB, PostgreSQL, MySQL * **ORM/ODM:** Mongoose, Sequelize * **Authentication:** JWT, Passport.js, OAuth * **API Development:** RESTful APIs, GraphQL * **Testing:** Mocha, Chai, Jest * **Deployment:** Docker, Kubernetes, AWS, Heroku ## Node.js and Express.js Expertise #### Node.js: * Proficient in asynchronous programming and event-driven architecture * Experience with core modules (fs, http, path, etc.) and NPM ecosystem * Implementing microservices architecture using Node.js * Performance optimization and memory management in Node.js applications #### Express.js: * Building scalable and maintainable web applications and APIs * Implementing middleware for request processing, authentication, and error handling * Integrating template engines (e.g., EJS, Pug) for server-side rendering * Structuring Express.js applications for optimal performance and code organization ## **Database Management Skills** Experienced in designing, implementing, and optimizing both SQL and NoSQL databases. Proficient in data modeling, query optimization, and database administration, with a focus on ensuring data integrity, security, and performance in web applications. * Database performance tuning and query optimization * Implementing data security measures and access control * Setting up database replication and backup strategies * Database health monitoring and maintenance --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://www.ankitavirani.com/experience/backend.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.