Application & data
Java, Python, Node.js, Scala, JavaScript, React.js, Go, Objective-C, Swift, Groovy, SQL, HTML / CSS, CSS, CSS3, HTML, HTML5, R, .NET, C#, Clojure, J2EE, PHP, MySQL, NoSQL, Django, Linux / Unix, Natural Language Processing (NLP), RESTful API, Ruby / Ruby on Rails, Jenkins, Rackspace Cloud, PostgreSQL