Web scraping in Scala using Play and Jsoup. Building RESTful API with Scala that does web scraping on HTML5 pages with Jsoup and Play Framework.
Writing Apache Spark unit tests, using MemoryStream. Unit testing Structured Streaming jobs in Apache Spark using built-in classes.
Angular and Chart.js used to build a real-time charts. Exploiting Ng2-Charts wrapper around Chart.js for nicer API in Angular applications.