Had an in person interview at my boot-camp, then two phone interviews with a hiring manager and a Jr dev. About a week later had an in-person interview/lunch with another manager, then was given two pretty intensive take-home code challenges (back-end. Was allowed to write in any language), then a final in-person interview at site.

The teams themselves moved quickly but HR was slow, confusing and hard to deal with.

Given a list of words find every unique four letter sequence in that list and output those sequences and the words they correspond to into two separate text files.