Data Science: Python, Numpy, Pandas, Django, Flask, TensorFlow, Keras, nltk, OpenCV, PyTorch
Cloud: docker, kubernetes
Others: Servlets/ JSP, Struts, JavaMail, Socket, JDBC, RMI, EJB, JNLP, Android, Hibernate, Xerces, Spring, WinForms, WPF, ASP .NET AJAX, Telerik