For job-hoppers and contractors. If you arrive at a company, what is the first thing you push for?
For instance, I usually implement a good feature-branch flow with branch pipelines and a strict merge-to-develop etiquette with mandatory merge requests. It makes my work easier and once the team is used to it, they also really like it. No more messy development branches.
I also request a small office stool next to my desk to make code reviews, three amigos and pair programming easier. It is a small thing but I noticed that people are more eager to discuss things if they have a place to sit.
Process and code fixes are _much_ easier once you have good rapport with the team.