 Subjects: Data Structures, Algorithms Design and Analysis, Operating systems, Computer Design.  Design: HLD and LLD  Concepts: Object Oriented Design and Programming, Multithreading, IPC  Programming Languages: C++, Python, Java, Go, Rust  Frameworks: FastAPI, Django  Databases: MySQL, Mongodb, Postgresql  Web/Application Servers: Nginx, Apache  Open Source: Kubernetes, Kafka, Elastic logstash Kibana, DC++, MySQL, Prometheus, Grafana, Fluentd, etcd, Harbor, Docker, Redis  Version Control: Git, perforce, clearcase, Subversion  Operating Systems: Windows and Linux Flavors. Codechef: https://www.codechef.com/users/saichandra721 Codeforces: https://codeforces.com/profile/uttharapally_chandra Leetcode: https://leetcode.com/uttharapally_chandra/