This reads like the intern was left to his own devices and his output not checked at all for three weeks straight. Actual tutoring would have surfaced the issue after 1 or 2 days tops.
Oh, but I had a daily sit down and addressed this and other issues several times.
The problem was, as I mentioned, "he though he was the best developer ever". stubborn as hell. And pushed back against anything he wasn't used to, anything that wasn't his usual "ssh or ftp into prod and change stuff until it works" because he thought this was the only method that worked.
This was my first encounter with a self-proclaimed "10x" developer before that term existed. Someone who - as seen by far off management - seemingly have a high output, but in reality just create a trail of tech-debt and work for the rest of the team.
The problem was, as I mentioned, "he though he was the best developer ever". stubborn as hell. And pushed back against anything he wasn't used to, anything that wasn't his usual "ssh or ftp into prod and change stuff until it works" because he thought this was the only method that worked.
This was my first encounter with a self-proclaimed "10x" developer before that term existed. Someone who - as seen by far off management - seemingly have a high output, but in reality just create a trail of tech-debt and work for the rest of the team.