Lift a whole team
Software will take the shape of the organisation that created it. So working with the team will show in the architecture and maintainability of the code.
I use ensemble programming and retrospectives to enhance collaboration in a team. Throw in a couple of learning hours on technical skills and the team will build a common understanding for what code quality is to them.
I also help with linting, coaching code reviews and other removers of friction in a team.