An ex-collegue was into hacker rank style things. I saw him doing one and pointed out that it's the sort of stuff he will never use on the job. A lot of the stu

An ex-collegue was into hacker rank style things. I saw him doing one and pointed out that it's the sort of stuff he will never use on the job. A lot of the stuff he builds is overengineered and he is more interested in producing clever code than maintainable code.