Mern Stack, Prometheus, API design, Grafana, Datadog, React, Docker, AWS, Java, Sql, Gcp, Azure, Kubernetes, Data lakes, Profiling, Event-driven systems, Microservices architecture, Security Protocols, Headless commerce, Serverless architectures, Composable architecture, NoSQL databases, Fraud Detection, Disaster Recovery Planning, Analytics pipelines, CI/CD pipelines