Sakshi Singh

Backend Developer (MERN) specializing in Node.js (Express/Koa), building scalable REST/GraphQL APIs and microservices. Strong with MongoDB and SQL (PostgreSQL/MySQL) and schema design. Deliver real-time features via WebSockets and IoT. Implement API security (JWT, OAuth2, RBAC). Focus on performance tuning, logging/monitoring, error handling, and API contract design with frontend/mobile. Experience with cron jobs, GCP, Elasticsearch, validation, rate limiting, code reviews, and documentation.