I applied online and received a call a few weeks later.

After a phone interview, I was offered an interview with the engineers.

I prepared using interview reviews from Glassdoor and answered all the questions well, receiving good marks from the interviewers.

Only one thing wasn't good enough, I guess – my English.

The first question was to solve a programming problem. Other questions were about business logic, specifically concerning hotels.

First question:

Write a function that takes a filename or file descriptor for a dictionary file and a list of characters, and returns the biggest word that contains all the characters in the list.

Example:

Dictionary file: '/usr/share/dict/english.dict'

Words:

• amsterdam
• abacadabra
• asdfasdfasdfa

Characters: ['a', 'b', 'c']

Result: => abacadabra