Nice list. One thing I would add I noticed is that good senior engineers have an eye for, and a healthy fear of complexity. This usually comes from (painful)

Nice list. One thing I would add I noticed is that good senior engineers have an eye for, and a healthy fear of complexity. This usually comes from (painful) experience. Junior people on the other hand like to go and create more moving parts than necessary using the very latest tech/library versions. A good senior person is not afraid to solve something using a short shell script running from cron. A junior person might be insecure about using something so antique and come up with a Ruby or Node or what have you solution instead.