Short Skype 'HR' interview, 1 hour technical interview on site. Both people were very polite and helpful to talk to, had no problem with the interview process. I would categorise the technical questions as hard, they are very platform specific for what they are solving in their company which makes sense, but is not so helpful when you are interested in this company to learn these skills.

Where does a cache fit in this picture (of a server/application layout)

Given an unknown number of transactions coming into your website, how do you derive statistics on the total for the 'last' 30 minute period using constant memory (the answer is bucketing)

Draw a Java 8 lambda that returns the sum of a collection of objects where total is greater than x ( a ridiculous question, I don't see how this relates to any particular job skill )