Programming Languages: Java, Python, C++, JavaScript, TypeScript

Web Development: HTML5, CSS3, React.js, Angular, Vue.js

Backend Development: Node.js, Django, Spring Boot, .NET

Databases: MySQL, PostgreSQL, MongoDB, Oracle

APIs: RESTful APIs, GraphQL

Version Control: Git, GitHub, GitLab

Cloud Platforms: AWS, Azure, Google Cloud

DevOps: Docker, Kubernetes, CI/CD pipelines (Jenkins, GitHub Actions)

Testing: Unit Testing, Integration Testing, Jest, JUnit, Selenium

Data Structures & Algorithms

System Design & Architecture