Java, JavaScript, Python, Groovy, C, C++, SQL, Spring Boot, Dropwizard, Grails, Node.js, Django, Vue.js, Angular, React.js, jQuery, HTML, CSS, Bootstrap, MySQL, PostgreSQL, MS SQL, SQLite, Linux, Windows, Git, GitHub, CI/CD, Docker, AWS (EC2), Swagger, RabbitMQ, RESTful API, SOAP, Maven