Ian Wrigley is currently the Senior Curriculum Manager at Cloudera, responsible for the team which creates all the company's Hadoop training materials. He's been a tech journalist, an instructor, and a course author for over 20 years, during which time he's taught everything from C programming to copywriting for the Web. He describes his job as "teaching geeks to be geekier".
Sarah Sproehnle is the Vice President of Educational Services at Cloudera, a company that helps develop, manage and support Apache Hadoop. While she is a geek at heart, her passion is helping people learn complex technology. In addition to teaching people how to use Hadoop, she's taught database administration, various programming languages, and system administration.
Once upon a time Gundega was a Udacity student. In a way she still is, because she is learning new things from instructors she works with and her Udacity coworkers every day.
If you occasionally want to read fun news about robotics, science and games, follow her on G+ - https://plus.google.com/+GundegaDekena.