Programming Languages: Java, Kotlin, SQL, XML. Backend Technologies: Spring Boot, Hibernate, RESTful Web Services, JPA, Microservices. Mobile Development: Android SDK, Kotlin, Java, Jetpack Libraries, Firebase Databases: MySQL, PostgreSQL Tools & Technologies: Git, Jenkins, Docker, Kubernetes, Maven, Gradle, JUnit, Log4j, Apache Kafka Version Control: Git, GitHub, Svn Development Methodologies: Agile (Scrum), Continuous Integration/Continuous Deployment (CI/CD) IDE: IntelliJ IDEA, Android Studio, Eclipse